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Digital artifact

A digital artifact is any undesired or unintended alteration in data introduced during a digital process by an involved technique and/or technology. The term is used across various fields, including digital media processing (where artifacts often manifest as visible or audible distortions in images, videos, or audio), preservation (affecting long-term data integrity), and forensics (serving as traces of system or user activity). In digital media, these distortions are commonly caused by limitations or errors in processing techniques, such as lossy compression algorithms that discard data to reduce file size.^[1] They appear as unintended alterations that degrade quality, becoming more pronounced with higher compression or in complex scenes like fast motion, representing a trade-off between efficient storage/transmission and faithful reproduction.^[2] Digital artifacts in media arise from stages like analog-to-digital conversion, sampling, encoding, and decoding. For example, quantization errors approximate continuous signals into discrete values, leading to inaccuracies, while lossy formats like JPEG and MPEG remove perceptual redundancies, such as high-frequency details.^[2] Other causes include undersampling (causing aliasing) or hardware limitations in rendering.^[2] Common media artifacts include blocking (grid-like discontinuities), ringing (oscillations around edges), mosquito noise (distortions near high-contrast areas), and blurring (smoothed details) in images/videos, as well as clipping or quantization noise in audio.^[3] These are evident in streaming, photography, and medical imaging. Mitigation involves advanced algorithms like perceptual coding or lossless compression. Despite progress in codecs such as AV1 and HEVC, artifacts remain a key challenge in digital media standards for broadcasting, gaming, and telecommunications.^[3]

Overview and Definitions

Core Definition

A digital artifact encompasses any digital object or unintended alteration in digital data that emerges from processes such as creation, processing, storage, or transmission. This term applies across various domains in computing and information science, where digital artifacts can represent either flaws introduced by technical limitations or meaningful records of digital activity. Unlike physical artifacts, which exist tangibly and independently, digital artifacts are inherently encoded representations that rely on specific hardware, software, and formats for rendering and interpretation, making their accessibility contingent on evolving technological contexts.^[4]^[5] The concept manifests in distinct senses depending on the context. In digital media processing, digital artifacts typically denote undesired distortions in signals or content, such as noise or imperfections arising from compression algorithms in images, audio, or video files. These alterations degrade perceptual quality but are intrinsic to efficient data handling in digital systems.^[6] In digital preservation, digital artifacts refer to born-digital objects—materials originating in digital form, like electronic documents or datasets—valued for their cultural or informational significance and requiring strategies to mitigate format dependency and obsolescence.^[7] These differ from digitized physical items, as born-digital artifacts have no analog precursor and demand ongoing technological intervention to remain interpretable.^[8] In digital forensics, digital artifacts are traces of user or system activity, such as metadata or log entries, that serve as evidence for reconstructing events on devices. A formal conceptualization, known as the Curated Forensic Artifact (CuFA), defines them based on properties including curation via forensic procedures, evidentiary value, antecedent temporal relations, and location in a useful format to standardize analysis and reporting.^[9] This sense highlights their evidentiary role, distinct from the degradative connotations in media processing. Overall, the dependency on technology underscores a core property: digital artifacts' meaning and usability are mediated by interpretive tools, distinguishing them from self-evident physical counterparts.^[10]

Historical Development

The concept of digital artifacts emerged in the 1980s amid advancements in digital imaging and signal processing, where unintended distortions in processed data first gained attention as byproducts of early compression techniques.^[11] These artifacts were particularly evident in nascent efforts to reduce data volume for storage and transmission, laying the groundwork for recognizing digital imperfections as inherent to computational representation. By the late 1980s, research into image compression algorithms, such as those developed by the Joint Photographic Experts Group (JPEG), highlighted visible distortions like blocking and ringing as key challenges in lossy encoding.^[12] The JPEG standard, formalized by ISO in 1992, marked the first widespread documentation of such artifacts, with patents filed as early as 1988 describing their occurrence in discrete cosine transform-based methods.^[13] In the 1990s, the term expanded beyond technical imaging to encompass broader applications in digital libraries and forensics, driven by the proliferation of digitized content. Projects like JSTOR, launched in 1995, exemplified early digitization initiatives that preserved scholarly journals while introducing artifacts from scanning and optical character recognition processes, emphasizing the need for reliable digital archiving.^[14] Concurrently, law enforcement agencies, including the FBI, began leveraging digital traces in investigations, with formal programs established by 1984 evolving into comprehensive forensic analysis by the mid-1990s to address computer-related crimes.^[15] This period saw artifacts not only as errors but as evidentiary markers, such as residual data patterns in seized media. The 2000s witnessed accelerated growth in web archiving and media standards, formalizing digital artifacts within preservation frameworks. The Internet Archive, founded in 1996, began systematically capturing web content, revealing artifacts from crawling inconsistencies and format obsolescence that underscored the fragility of online ephemera.^[16] In 2002, the Open Archival Information System (OAIS) reference model was published, later codified as ISO 14721:2003, providing a foundational standard for managing digital objects and mitigating artifactual degradation over time.^[17] Video compression standards like MPEG-2, widely adopted in the early 2000s for DVD and broadcasting, further highlighted motion-based artifacts such as macroblocking, influencing media processing norms.^[18] From the 2010s onward, digital artifacts integrated into emerging technologies like blockchain and AI-generated content, amid rising cyber threats. Bitcoin's launch in 2009 introduced immutable digital traces as artifacts on distributed ledgers, evolving in the 2010s with non-fungible tokens (NFTs) on platforms like Ethereum (2015 onward) that embedded artistic and ownership data, creating verifiable yet artifact-prone records.^[19] Post-2020, AI advancements amplified artifacts in synthetic media, such as deepfakes, prompting heightened focus in data forensics to detect anomalies amid cyber incidents like ransomware.^[20] Key ISO developments, including extensions to OAIS in subsequent revisions up to ISO 14721:2025, continued to guide preservation against these evolving challenges.^[21]^[22]

Artifacts in Digital Media and Processing

Types of Media Artifacts

Digital artifacts in media processing refer to unintended distortions or anomalies that arise during the digitization, compression, or transmission of visual and auditory signals, degrading the fidelity of the original content.^[23] These artifacts manifest as perceptible irregularities, such as visual patterns or audible distortions, and are distinct from intentional modifications in creative workflows. They commonly occur due to limitations in sampling, quantization, or encoding processes, though detailed causes are explored elsewhere. The primary types of media artifacts include aliasing, compression artifacts, noise, quantization errors, and moiré patterns. Aliasing arises from undersampling high-frequency components, causing them to appear as lower-frequency replicas, often resulting in jagged edges known as "jaggies" in low-resolution images.^[23] Compression artifacts emerge from lossy encoding schemes that discard data to reduce file size, with blocking being a prominent example in JPEG images where discrete cosine transform (DCT) divides the image into 8x8 pixel blocks, leading to visible grid-like boundaries at low bitrates.^[24] Noise introduces random variations in signal intensity, such as Gaussian noise in scanned or captured images, which follows a normal distribution and stems from sensor or environmental factors, appearing as grainy speckles that obscure fine details.^[25] Quantization errors occur during the mapping of continuous analog signals to discrete digital levels, producing banding in smooth gradients where subtle color transitions are replaced by abrupt steps due to insufficient bit depth.^[26] Moiré patterns result from interference between repetitive structures in the source material and the sampling grid, creating wavy or checkerboard illusions, as seen in scanned printed images or digital captures of fine textures like fabrics.^[27] In image media, artifacts often present as pixelation from excessive downsampling, where individual pixels become visibly blocky, or as ring-like patterns in medical imaging such as MRI scans, known as Gibbs ringing, which appears as oscillating lines near high-contrast edges due to finite Fourier transform truncation.^[28] Video artifacts extend these issues temporally, including blocking similar to images but across frames, and motion blur, which smears fast-moving objects when shutter speeds or frame rates fail to capture motion adequately, leading to trailing effects in compressed streams.^[29] For audio media, artifacts include clipping, where signal amplitudes exceed the maximum representable value, causing harsh, flattened distortions at peaks, and quantization noise in formats like MP3, which introduces subtle hiss or granularity from coarse amplitude rounding in modified discrete cosine transform (MDCT) encoding.^[30] These media-specific manifestations highlight how artifacts adapt to the dimensionality and perceptual nature of each format, from static visuals to dynamic soundscapes.

Causes and Examples

Digital artifacts in media processing often arise from sampling limitations, where violations of the Nyquist-Shannon sampling theorem lead to aliasing distortions.^[31]^[32] When the sampling rate is less than twice the highest frequency component in the signal, high-frequency details fold back into lower frequencies, producing unwanted patterns such as moiré effects in images or audible heterodyning in audio.^[33]^[34] This is particularly evident in digital imaging, where insufficient pixel resolution captures fine details inadequately, resulting in jagged edges or false textures.^[35] Lossy compression algorithms introduce another major source of artifacts through aggressive data reduction techniques, such as the discrete cosine transform (DCT) in JPEG encoding, which divides images into 8x8 pixel blocks and discards high-frequency coefficients.^[36] This quantization process creates visible blocking artifacts, where boundaries between blocks appear as grid-like patterns, especially at high compression ratios.^[37] Hardware imperfections, including sensor noise in cameras, further contribute by introducing random variations during signal capture; thermal noise and read-out electronics in CMOS sensors manifest as grainy luminance or color speckles, degrading low-light performance.^[38]^[39] Transmission errors, such as packet loss in streaming video over IP networks, cause frame drops or spatial discontinuities, leading to frozen blocks or temporal jerkiness in the decoded output.^[40]^[41] At a mechanistic level, quantization during analog-to-digital conversion represents a fundamental source of error, as continuous analog signals are approximated by discrete levels, introducing rounding discrepancies that appear as noise or distortion.^[42]^[43] To mitigate the audibility or visibility of these errors, dithering intentionally adds low-level random noise before quantization, randomizing the distortion and masking it as benign hiss rather than harmonic artifacts.^[44]^[45] A prominent case study involves MP3 audio compression in music streaming, which proliferated in the late 1990s and early 2000s due to its efficient perceptual coding but introduced artifacts like ringing and pre-echo from psychoacoustic filtering and block-based transforms.^[46] Pre-2000s MP3s at bitrates below 128 kbps often exhibited noticeable smearing of transients in genres like rock or classical, while post-2000s advancements in streaming platforms shifted toward higher bitrates and hybrid codecs, reducing but not eliminating these issues in bandwidth-constrained environments.^[47] In smartphone photography, digital zoom relies on pixel interpolation to upscale cropped sensor data, generating artifacts such as softening, haloing, or unnatural sharpening around edges, as seen in devices like Google Pixel models where AI-enhanced upsampling creates fabricated details.^[48]^[49] For 3D rendering in graphics, z-fighting occurs when polygons with near-identical depth values compete for pixel coverage, producing flickering or shimmering surfaces, a common issue in scenes with overlapping geometry like architectural visualizations.^[50] These artifacts collectively degrade perceptual quality by introducing visible or audible distortions that disrupt immersion and fidelity, often quantified using metrics like Peak Signal-to-Noise Ratio (PSNR), which measures the ratio of maximum signal power to noise-induced error but correlates imperfectly with human perception in complex scenes.^[51]^[52]

Digital Artifacts in Preservation

Role in Digital Preservation

In digital preservation, digital artifacts are defined as born-digital materials—such as emails, PDFs, and 3D models—or items digitized from analog sources that possess both informational content and artifactual value, making them worthy of long-term safeguarding.^[53] These artifacts encompass a wide range of cultural and historical records, where their value extends beyond mere data to include contextual elements like creation metadata and structural integrity.^[54] The role of digital artifacts in preservation is crucial for maintaining access to cultural heritage, as they represent irreplaceable records of human activity that physical artifacts cannot fully replicate; however, unlike tangible objects, digital ones face unique threats from format obsolescence and technological decay, potentially rendering them inaccessible without intervention.^[55] This preservation effort ensures that societal memory—encompassing everything from personal correspondences to institutional archives—remains viable for future generations, mitigating the risk of total loss due to hardware failures or software incompatibilities. A key concept in this domain is digital artifactual value, which refers to the intrinsic properties of these objects, such as file formats, embedded metadata, and rendering behaviors, rather than just their extracted content; for instance, the layout and hyperlinks in a preserved web page contribute to its evidential significance.^[56] Examples include scanned manuscripts that retain original annotations or web pages captured by the Internet Archive's Wayback Machine, launched in 2001 to archive online content and preserve its interactive elements.^[57] Preservation processes begin with selection, involving the identification of significant properties—technical characteristics deemed essential for authenticity—as outlined in the PREMIS standard developed in 2005.^[54] To sustain access, strategies like migration (converting files to updated formats) or emulation (replicating original software environments) are employed, balancing fidelity to artifactual value with practical usability.^[58] Illustrative cases include the Library of Congress's digital collections, where 19th-century photographs have been digitized to preserve visual details and historical context, with ongoing efforts since the 2010s to migrate formats and emulate viewing conditions for sustained accessibility.^[59] These initiatives highlight how digital artifacts serve as foundational elements in archival strategies, enabling researchers to engage with heritage materials in their intended forms.^[60]

Strategies for Long-Term Preservation

Long-term preservation of digital artifacts requires a combination of technical strategies to ensure their authenticity, integrity, and accessibility over extended periods. One core approach is metadata embedding, which involves incorporating descriptive and administrative information directly into digital files to maintain context and provenance. For instance, the EXIF standard embeds technical metadata such as capture date and camera settings into image files, aiding in their identification and verification during preservation efforts.^[61] Similarly, the Dublin Core Metadata Element Set provides a simple framework for describing documents with elements like title, creator, and format, facilitating long-term management across diverse repositories.^[62] Another essential strategy is file format migration, which updates artifacts to more stable, open formats to mitigate obsolescence. This process often involves converting legacy files, such as migrating high-resolution TIFF images to PDF/A, an ISO-standardized subset of PDF designed specifically for archival purposes by restricting features that could compromise long-term readability, such as embedded JavaScript or external dependencies.^[63] Emulation serves as a complementary method, recreating the original software and hardware environment on modern systems to render artifacts without altering their content, thereby preserving the authentic user experience of interactive or software-dependent materials.^[64] Additionally, trusted digital repositories employ distributed systems like LOCKSS (Lots of Copies Keep Stuff Safe), a peer-to-peer network initiated in 2002 that creates multiple redundant copies across institutions to protect against data loss from hardware failure or institutional threats.^[65] Key standards underpin these strategies to ensure interoperability and reliability. The Open Archival Information System (OAIS) reference model, formalized as ISO 14721 in 2003 and updated in 2012 (with a further revision in 2025), provides a conceptual framework for archival systems, defining functional entities like ingestion, data management, and dissemination to support long-term preservation workflows.^[66] Complementing OAIS, the PREMIS (Preservation Metadata: Implementation Strategies) standard, released in 2005 by the Library of Congress, specifies a data dictionary for capturing technical, provenance, rights, and fixity metadata essential for monitoring and maintaining digital artifacts.^[67] Practical tools and organizational practices further enhance preservation efficacy. Checksums, such as MD5 hashing, generate unique digital fingerprints to verify file integrity by detecting alterations from bit rot or unauthorized changes, forming a foundational layer of fixity checks in repository workflows. Risk assessment is supported by frameworks like the Trustworthy Repositories Audit and Certification (TRAC) criteria, developed in 2007 by the Center for Research Libraries and others, which evaluates repositories against 84 measurable attributes across organizational, digital object, and technological dimensions to certify their sustainability.^[68] Case studies illustrate the application of these strategies in real-world scenarios. The European ARROW (Accessible Registries of Rights Information and Orphan Works towards Europeana) project, running from 2008 to 2011, integrated metadata embedding and repository standards to manage rights information for millions of digitized cultural artifacts, enabling safer mass preservation by identifying orphan works and streamlining clearance processes.^[69] However, challenges persist with proprietary formats, such as early Microsoft Word documents (.doc), where undocumented features and vendor dependency complicate migration and emulation, often requiring custom tools or format normalization to avoid loss of embedded macros or layout fidelity.^[70]

Digital Artifacts in Forensics

Definition and Importance

In digital forensics, artifacts are defined as residual traces of data left on a device as a result of user interactions, system events, or attempted deletions, such as temporary files, browser cache, or log entries that persist even after primary data is removed or obscured.^[71] These artifacts represent unintentional byproducts of normal device usage, providing investigators with indirect evidence of activities that may not be evident from the surface-level content.^[72] Unlike the primary digital content—such as documents, images, or emails that constitute the substantive data itself—forensic artifacts primarily consist of metadata, system logs, or ancillary records that indicate what happened rather than what the data says.^[72] For instance, while content might show a file's existence, artifacts like timestamps in file allocation tables or registry entries reveal the sequence, timing, and intent behind its creation or access, offering a more complete narrative of events.^[73] The importance of these artifacts lies in their ability to reconstruct event timelines and provide non-repudiable evidence in investigations, particularly cybercrimes, where they surpass content alone by disclosing patterns of behavior, such as repeated unauthorized access or data exfiltration attempts.^[74] In legal proceedings involving computers, mobile devices, or networks, artifacts are crucial for establishing evidentiary integrity, adhering to chain-of-custody protocols outlined in NIST guidelines from the 2000s, which emphasize documentation to prevent tampering and ensure admissibility in court.^[75] The formal recognition of digital artifacts in forensics emerged in the 1990s, coinciding with the development of specialized tools like EnCase, launched in 1998, which enabled systematic acquisition and analysis of such traces from seized storage media.^[76]

Key Forensic Artifacts and Analysis

In digital forensics, key artifacts are categorized into system, application, network, and mobile types, each providing distinct evidence of user activity, system events, and device interactions. System artifacts, such as those in the Windows registry, record core operating system behaviors like program executions and hardware connections. For instance, the UserAssist registry key under NTUSER.DAT tracks user interactions with applications, including execution counts and last-run timestamps, enabling investigators to reconstruct software usage patterns.^[77] Similarly, the USBSTOR subkey in the Windows registry enumerates connected USB devices by serial number and vendor details, aiding in tracing external media usage.^[78] Prefetch files (.pf) in the C:\Windows\Prefetch directory cache execution data for frequently used programs, revealing run counts, timestamps, and loaded DLLs to assess program frequency and timing.^[79] Application artifacts capture user interactions within software, often stored in structured databases. Browser history, for example, is maintained in SQLite databases like Chrome's History file, which logs URLs, visit timestamps, and download paths, allowing recovery of web activity even from deleted entries through unallocated space analysis. These artifacts help correlate online behavior with other evidence, such as timestamps aligning with system logs. Network artifacts involve captured traffic data, primarily in PCAP (Packet Capture) files, which record full packet details including source/destination IPs, protocols, and payloads for reconstructing communications.^[80] Analysis of PCAPs can reveal malware command-and-control channels or data exfiltration, with tools dissecting encrypted sessions via metadata like TLS handshakes. Mobile artifacts, particularly on iOS, include plist (property list) files that store configuration and usage data. Significant location data in the com.apple.routined cache directory, for instance, retains geolocation history from apps and services, including latitude/longitude coordinates and timestamps, useful for mapping user movements.^[81] The Amcache.hve file, introduced in Windows 8 in 2012 and located at C:\Windows\AppCompat\Programs\Amcache.hve, further exemplifies system artifacts by logging application installations, executions, and file paths, providing evidence of software deployment even after uninstallation.^[82] Analysis techniques focus on extracting and correlating these artifacts for investigative insights. Timeline reconstruction integrates timestamps from multiple sources into a chronological narrative, often using the open-source Plaso tool, which parses logs, registries, and files to generate super timelines for event sequencing.^[83] Hashing with SHA-256 ensures evidence integrity by generating unique digests of files or images; any alteration produces a mismatched hash, verifying chain-of-custody.^[84] File carving recovers deleted or fragmented data by scanning unallocated disk space for known file signatures (e.g., JPEG headers), bypassing file system metadata to retrieve artifacts like images or documents.^[85] Specialized tools facilitate these analyses. Autopsy, an open-source platform based on The Sleuth Kit, automates ingestion of disk images, timeline generation, and carving across categories, supporting keyword searches and artifact visualization.^[86] Volatility, a framework for memory forensics, extracts volatile artifacts like running processes and network connections from RAM dumps, crucial for detecting in-memory malware.^[87] Challenges in artifact analysis include anti-forensic techniques like data wiping, where tools overwrite files with patterns (e.g., zeros or random data) to hinder recovery, necessitating advanced carving and residual analysis to detect remnants.^[88]

Challenges and Future Directions

Common Challenges

Handling digital artifacts presents several technical challenges that threaten their integrity and usability over time. Bit rot, the gradual corruption of data due to hardware failures or environmental factors, can silently alter files without detection, complicating long-term preservation efforts in audiovisual and other media collections.^[89] Format obsolescence further exacerbates this issue, as older file types become unreadable when supporting software or hardware is discontinued; for instance, files created in WordStar during the 1980s are often inaccessible today without specialized conversion tools.^[90] Scalability poses another hurdle, particularly for repositories managing vast collections, where processing and verifying millions of files strains computational resources and requires robust architectures to prevent widespread data loss.^[91] Ethical and legal concerns add complexity to artifact management across domains. In digital forensics, privacy protections under regulations like the EU's General Data Protection Regulation (GDPR), effective since May 2018, demand careful handling of personal data extracted from devices to avoid unauthorized disclosure during investigations.^[92] Similarly, ownership disputes arise in the preservation of cultural artifacts, where digitization of indigenous or communal heritage raises questions of intellectual property rights and repatriation, potentially leading to cultural appropriation if communities lack control over digital reproductions.^[93] Cross-context problems hinder effective artifact stewardship on a broader scale. Interoperability issues stem from inconsistent metadata standards across institutions, making it difficult to share or migrate artifacts between systems without loss of contextual information.^[94] Resource intensity compounds this, as storing petabyte-scale archives incurs escalating costs for hardware, energy, and maintenance, often outpacing institutional budgets and risking selective preservation.^[95] Real-world incidents underscore these vulnerabilities. The 2017 WannaCry ransomware attack disrupted global systems, including healthcare networks, revealing forensic recovery challenges such as encrypted artifact inaccessibility and the need for rapid, cross-jurisdictional analysis to reconstruct compromised evidence.^[96] Likewise, Yahoo's 2013 data breach, affecting all 3 billion accounts,^[97] highlighted preservation risks by exposing unencrypted user data to long-term theft and degradation, eroding trust in digital repositories.^[98]

Emerging Trends

Advancements in artificial intelligence (AI) and machine learning are transforming the detection and mitigation of digital artifacts in media. Since 2017, generative adversarial networks (GANs) have enabled automated inpainting techniques to repair artifacts such as compression distortions in images, with seminal work demonstrating semantic reconstruction using deep generative models.^[99] Recent deep learning approaches further automate the identification of visual artifacts in compressed images, including texture degradation and color shifts, achieving high accuracy in distinguishing AI-compressed from traditional formats.^[100] In digital forensics, AI-assisted tools now enhance timeline reconstruction by analyzing artifacts like log files and network traces, using generative AI to attribute anomalies and build coherent event sequences from fragmented data.^[101] Blockchain technologies are increasingly integrated for the immutable preservation of digital artifacts, ensuring provenance and integrity over time. The Ordinals protocol, introduced on Bitcoin in 2023, allows inscriptions of digital artifacts directly onto satoshis, creating unique, non-fungible representations akin to NFTs while leveraging Bitcoin's security for long-term storage.^[102] Non-fungible tokens (NFTs) serve as verifiable proofs of ownership for digital artifacts, providing blockchain-based certificates that extend to both purely digital and hybrid assets, with applications in art and media authentication.^[103] Emerging formats are expanding the scope of digital artifacts beyond traditional 2D media into immersive and sustainable domains. Post-2020 advancements in photogrammetry have facilitated high-fidelity 3D scanning of cultural heritage sites, generating virtual reality (VR) models that preserve artifacts as interactive digital twins for research and public access.^[104] Research on DNA-based data storage, prominent in the 2010s, offers ultra-dense, long-term archival solutions for digital artifacts, with densities exceeding petabytes per gram and stability spanning thousands of years, as demonstrated in early encoding experiments.^[105] Interdisciplinary applications are bridging digital artifacts with fields like humanities and computing security. In digital humanities, scholars analyze artifacts within social media archives to trace cultural narratives, employing web-archiving techniques to capture ephemeral online content for historical study.^[106] Quantum computing poses emerging threats to the encryption securing digital artifacts, potentially decrypting protected cultural data; however, post-quantum cryptography standards are being developed to safeguard preservation efforts.^[107] Projections indicate significant growth in hybrid physical-digital artifacts by 2030, driven by augmented reality (AR) integrations that overlay digital enhancements on tangible objects, such as museum exhibits, with the global AR market expected to reach $599.59 billion and enabling widespread adoption in heritage and education.^[108]

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What is Dithering? Using Dithering to Eliminate Quantization Distortion
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Dithering is the process of intentionally adding noise to the signal prior to its quantization. Dithering turns quantization distortion all the way down.
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[PDF] PREMIS Final Report - Library of Congress
Significant properties may be objective technical characteristics subjectively considered important, or subjectively determined characteristics. For example ...
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Implementation of preservation measures should be as transparent as possible to users of digital materials, and should not represent obstacles to access and use ...
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artifactual value. n. the usefulness or significance of an object based on its physical or aesthetic characteristics, rather than its intellectual content
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Jul 10, 2023 · The Wayback Machine has been particularly useful in finding and retrieving lost websites, said Ranca. She also makes sure materials she produces are preserved ...
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Emulation offers an alternative solution to migration that allows archives to preserve and deliver access to users directly from original files. This technique ...
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The digital collections comprise millions of items including books, newspapers, manuscripts, prints and photos, maps, musical scores, films, sound recordings ...Your Favorites from the Library... · Public Domain Films · Advertising Food · Cats
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Digital Preservation at the Library of Congress
Digital preservation efforts are distributed throughout many units at the Library of Congress and includes programs related to digital content packaging and ...
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Exif Exchangeable Image File Format, Version 2.2
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PDF/A Family, PDF for Long-term Preservation
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Emulation as a Digital Preservation Strategy - D-Lib Magazine
Migration is the process of transferring data from a platform that is in danger of becoming obsolete to a current platform. This process has both dangers and ...
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[PDF] LOCKSS: A Distributed Digital Archiving System Table of Contents
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ISO 14721:2012 defines the reference model for an open archival information system (OAIS). An OAIS is an archive, consisting of an organization, which may be ...Missing: source | Show results with:source
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PREMIS: Preservation Metadata Maintenance Activity (Library of ...
The PREMIS Data Dictionary for Preservation Metadata is the international standard for metadata to support the preservation of digital objects and ensure ...Missing: 2005 | Show results with:2005
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[PDF] tory CRL specifications certification criteria RLG Programs
This new document, version 1.0 of the Criteria for Measuring Trustworthiness of Digital Repositories &. Archives: an Audit & Certification Checklist, represents ...
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The Accessible Registries of Rights Information and Orphan Works Towards Europeana (ARROW) project began in September 2008 with the aim of facilitating the ...
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Best Practices for the Selection of Electronic File Formats
Some formats, such as Microsoft Word documents (.doc), are proprietary; but due to their widespread popularity, they are relatively safe for preservation.
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Forensic Artifact - an overview | ScienceDirect Topics
Digital forensic artifacts can be defined as trace information left on a device, whether intentionally or unintentionally, through the regular use of that ...Introduction to Forensic... · Forensic Process: Collection...
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Computer Artifacts: Top artifacts investigators need - Magnet Forensics
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In the realm of digital forensics, an artifact is any piece of information stored on a digital device that provides insights into the usage and activities ...
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The guidelines and procedures should support the admissibility of evidence into legal proceedings, including information on gathering and handling evidence ...
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Apr 11, 2019 · When EnCase Forensic launched in 1998, there was only one other solution attempting to help make sense of digital evidence. However, it only ran ...
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[PDF] Windows Registry Forensic Tool Test Assertions and
Jun 1, 2018 · WRT-AO-05 If a Windows registry forensic tool provides the user with the ability to extract registry forensic artifacts well-known in the field ...
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Nov 1, 2023 · As an aside, it might come as a surprise to many forensicators that the USBSTOR key does NOT contain all USB devices that have been attached.
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Forensic Value of Prefetch - SANS Internet Storm Center
Oct 20, 2022 · Found in C:\Windows\Prefetch by default, prefetch files (.pf) contain a wealth of information that can prove vital to any investigation.
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[PDF] Digital Forensics and Incident Response (DFIR) Framework for ...
Network Full content traffic – A complete packet capture of network traffic, whether it is Serial-based or Ethernet-based data. Usually, this type of data ...
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Leveraging the Windows Amcache.hve File in Forensic Investigations
The Amcache.hve is a registry hive file that is created by Microsoft® Windows® to store the information related to execution of programs.
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[PDF] Advancing coordinated cyber-investigations and tool interoperability ...
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[PDF] An Empirical Comparison of Widely Adopted Hash Functions in ...
May 19, 2025 · For instance, to ensure the integrity of digital evidence in court, a forensic examiner traditionally computes the hash digest of the entire ...
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File Carving - Computer Forensics Tools & Techniques Catalog
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Snapshot: S&T is Enhancing the Autopsy Digital Forensics Tool
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[PDF] Anti-Forensics: Techniques, Detection and Countermeasures
Anti-Forensics (AF) tools and techniques frustrate CFTs by erasing or altering information; creating “chaff” that wastes time and hides information; ...
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[PDF] Bit Rot and Silent Data Corruption in Digital Audiovisual Preservation
Bit Rot and Silent Data Corruption in Digital Audiovisual Preservation. Jeffrey Lauber. Introduction. As atoms decay, so too do bits. Though relatively mild ...
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Fundamentals of AV Preservation - Chapter 4 - NEDCC
Obsolescence can happen at the file or program level (such as Real Media and WordStar) or with the media on which the file is stored (such as Zip drives).
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Preservation issues - Digital Preservation Handbook
But some repositories still face significant challenges in developing and maintaining scalable architectures and procedures to handle growing quantities of data ...
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[PDF] Current Privacy Concerns with Digital Forensics - Faculty
Sanctions for noncompliance are an important part of the GDPR. Article 83 says they can be (1) warnings in cases of first and unintentional non-compliance, (2) ...
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Safeguarding Cultural Heritage in the Digital Era – A Critical ...
Aug 21, 2023 · This paper explores the disruptive impact of digitization on cultural heritage preservation, focusing on the challenges posed by intellectual property rights.
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Achieving Interoperability at the Record and Repository Levels
The major challenge in converting records prepared according to a particular metadata scheme into records based on another schema (see Figure 1) is how to ...
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[PDF] The Significance of Storage in the “Cost of Risk” of Digital Preservation
Abstract. As storage costs drop, storage is becoming the lowest cost in a digital repository – and the biggest risk. We examine current modelling of costs ...
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[PDF] Lessons learned review of the WannaCry Ransomware Cyber Attack
Feb 1, 2018 · On Friday 12 May 2017, a global ransomware attack, known as WannaCry, affected a wide range of countries and sectors. Although WannaCry impacted ...
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[PDF] THE YAHOO DATA BREACH - American University Law Review
Oct 5, 2017 · Social media and electronic commerce websites face significant risk factors, and an acquirer may inherit cyber liability and vulnerabilities.
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[PDF] Semantic Image Inpainting With Deep Generative Models
The current GAN model in this paper works well for relatively simple structures like faces, but is too small to represent complex scenes in the world. Conve ...
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JPEG AI Image Compression Visual Artifacts: Detection Methods ...
Nov 11, 2024 · In this work, we propose methods to separately detect three types of artifacts (texture and boundary degradation, color change, and text corruption)
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(PDF) GenAI in Digital Forensics: Enhancing Timeline ...
Mar 25, 2025 · This paper explores the integration of Generative Artificial Intelligence (GenAI) into digital forensic workflows, focusing on the enhancement of timeline ...
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Q&A: Bitcoin Ordinals, Inscriptions, and Digital Artifacts
Apr 20, 2023 · Since early 2023, the Bitcoin community has been abuzz with the introduction of “digital artifacts,” or essentially non-fungible tokens (NFTs) ...
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Beyond the bubble: Will NFTs and digital proof of ownership ...
Non-fungible Tokens (NFTs) are blockchain-enabled cryptographic assets that represent proof-of-ownership for digital objects. The use of NFTs has been ...
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Three-Dimensional Printing and 3D Scanning - MDPI
Three-dimensional scanning is used to create detailed digital models of cultural heritage sites, artifacts, and monuments, which can be used for research, ...
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DNA storage: research landscape and future prospects - PMC - NIH
The figure shows seminal publications in the history of research on DNA ... data storage densities achieved in major DNA data storage publications since 2012.
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Web-archiving and social media: an exploratory analysis
Jun 22, 2021 · The aim of this article is to study the landscape of born-digital collections in heritage institutions and academia, in particular social media archiving (SMA) ...
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Heritage preservation in quantum computing era - Nature
May 22, 2025 · Once they are in digital form, cryptography is a key means of preserving them. However, due to advances in quantum computing, many of the ...
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Augmented Reality Market Size, Share & Trends Report 2030
The global augmented reality market size was estimated at USD 83.65 billion in 2024 and is projected to reach USD 599.59 billion by 2030, growing at a CAGR of ...Missing: hybrid artifacts<|control11|><|separator|>