A Forensic Scheme for Revealing Post-processed Region Duplication Forgery in Suspected Images

Recent researches have demonstrated that local interest points alone can be employed to detect region duplication forgery in image forensics. Authentic images may be abused by copy-move tool in Adobe Photoshop to fully contained duplicated regions such as objects with high primitives such as corners and edges. Corners and edges represent the internal structure of an object in the image which makes them have a discriminating property under geometric transformations such as scale and rotation operation. They can be localised using scale-invariant features transform (SIFT) algorithm. In this paper, we provide an image forgery detection technique by using local interest points. Local interest points can be exposed by extracting adaptive non-maximal suppression (ANMS) keypoints from dividing blocks in the segmented image to detect such corners of objects. We also demonstrate that ANMS keypoints can be effectively utilised to detect blurred and scaled forged regions. The ANMS features of the image are shown to exhibit the internal structure of copy moved region. We provide a new texture descriptor called local phase quantisation (LPQ) that is robust to image blurring and also to eliminate the false positives of duplicated regions. Experimental results show that our scheme has the ability to reveal region duplication forgeries under scaling, rotation and blur manipulation of JPEG images on MICC-F220 and CASIA v2 image datasets

Handbook of Digital Face Manipulation and Detection

This open access book provides the first comprehensive collection of studies dealing with the hot topic of digital face manipulation such as DeepFakes, Face Morphing, or Reenactment. It combines the research fields of biometrics and media forensics including contributions from academia and industry. Appealing to a broad readership, introductory chapters provide a comprehensive overview of the topic, which address readers wishing to gain a brief overview of the state-of-the-art. Subsequent chapters, which delve deeper into various research challenges, are oriented towards advanced readers. Moreover, the book provides a good starting point for young researchers as well as a reference guide pointing at further literature. Hence, the primary readership is academic institutions and industry currently involved in digital face manipulation and detection. The book could easily be used as a recommended text for courses in image processing, machine learning, media forensics, biometrics, and the general security area

COMPUTATIONAL MODELLING OF HUMAN AESTHETIC PREFERENCES IN THE VISUAL DOMAIN: A BRAIN-INSPIRED APPROACH

Following the rise of neuroaesthetics as a research domain, computational aesthetics has also known a regain in popularity over the past decade with many works using novel computer vision and machine learning techniques to evaluate the aesthetic value of visual information. This thesis presents a new approach where low-level features inspired from the human visual system are extracted from images to train a machine learning-based system to classify visual information depending on its aesthetics, regardless of the type of visual media. Extensive tests are developed to highlight strengths and weaknesses of such low-level features while establishing good practices in the domain of study of computational aesthetics. The aesthetic classification system is not only tested on the most widely used dataset of photographs, called AVA, on which it is trained initially, but also on other photographic datasets to evaluate the robustness of the learnt aesthetic preferences over other rating communities. The system is then assessed in terms of aesthetic classification on other types of visual media to investigate whether the learnt aesthetic preferences represent photography rules or more general aesthetic rules. The skill transfer from aesthetic classification of photos to videos demonstrates a satisfying correct classification rate of videos without any prior training on the test set created by Tzelepis et al. Moreover, the initial photograph classifier can also be used on feature films to investigate the classifier’s learnt visual preferences, due to films providing a large number of frames easily labellable. The study on aesthetic classification of videos concludes with a case study on the work by an online content creator. The classifier recognised a significantly greater percentage of aesthetically high frames in videos filmed in studios than on-the-go. The results obtained across datasets containing videos of diverse natures manifest the extent of the system’s aesthetic knowledge. To conclude, the evolution of low-level visual features is studied in popular culture such as in paintings and brand logos. The work attempts to link aesthetic preferences during contemplation tasks such as aesthetic rating of photographs with preferred low-level visual features in art creation. It questions whether favoured visual features usage varies over the life of a painter, implicitly showing a relationship with artistic expertise. Findings display significant changes in use of universally preferred features over influential vi abstract painters’ careers such an increase in cardinal lines and the colour blue; changes that were not observed in landscape painters. Regarding brand logos, only a few features evolved in a significant manner, most of them being colour-related features. Despite the incredible amount of data available online, phenomena developing over an entire life are still complicated to study. These computational experiments show that simple approaches focusing on the fundamentals instead of high-level measures allow to analyse artists’ visual preferences, as well as extract a community’s visual preferences from photos or videos while limiting impact from cultural and personal experiences

Handbook of Digital Face Manipulation and Detection

This open access book provides the first comprehensive collection of studies dealing with the hot topic of digital face manipulation such as DeepFakes, Face Morphing, or Reenactment. It combines the research fields of biometrics and media forensics including contributions from academia and industry. Appealing to a broad readership, introductory chapters provide a comprehensive overview of the topic, which address readers wishing to gain a brief overview of the state-of-the-art. Subsequent chapters, which delve deeper into various research challenges, are oriented towards advanced readers. Moreover, the book provides a good starting point for young researchers as well as a reference guide pointing at further literature. Hence, the primary readership is academic institutions and industry currently involved in digital face manipulation and detection. The book could easily be used as a recommended text for courses in image processing, machine learning, media forensics, biometrics, and the general security area

Journalistic Practice and the Cultural Valuation of New Media: Topicality, Objectivity, Network

Around the turn of the twenty-first century, American journalism is undergoing an existential crisis provoked by the emergence of digital and networked communication. As the economic model of producing journalism is undergoing significant changes, this study argues that the crisis of journalism is primarily a cultural crisis of valuation. Because the practices that traditionally defined the exclusivity of journalism as a form of public communication have been transposed to the online and digital environment through social media and blogs, such practices no longer value journalism in the same terms like in the age of mass media. The key to understanding the cultural crisis of journalism in the present, this study argues, is to revise the traditional narrative and its associated terminologies of the institutionalization of journalism. Journalism is thus defined as a structure of public communication, which needs to be enacted by producers and audiences alike to become socially meaningful. The consequence of seeing journalism as a structure sustained through social practices is that it allows to see the relation between audiences and their journalistic media as constitutive for the social function of new media in journalism. Through the analytically central dimension of practice, the study presents key moments in the history of modern journalism, where the meaning of new media was negotiated. These moments include the emergence of topical news media oriented toward a mass market (the penny press in the 1830s) and the definition of a schema of objectivity which valued journalistic practice in professional and scientific terms around the turn of the twentieth century in analogy to photographic media. In each phase, material, cognitive and social practices helped to define the value of a given new medium for journalism. Through the schemas of topicality and objectivity, journalistic practice institutionalized a privileged structure of public communication. The legacy of defining these schemas is then regarded as the central reason for the cultural crisis of journalistic practice in the present, as practices have been transposed and re-valued to sustain either forms of alternative journalism (as peer-production) or forms of self-communication in network media like blogs. Neither the form nor the technology of the blog alone can explain this differential social relevance but only the different ways in which social practices integrated and value new media. The study synthesizes an interdisciplinary array of concepts from cultural studies, sociology and journalism studies on subjects such as public communication, interaction, news production and cultural innovation. The theoretical framework of practice theories is then applied to an extensive body of primary and secondary source material, in order to retrace the cultural valuation of new media in a historically-comparative perspective. The study offers a theoretical and empirical contribution to the analysis of cultural innovation, which can be adopted to other cultural forms and media

The Early Neolithic 'Broken World': The role of pottery breakage in south-eastern and central Europe

One of the most materially evident yet socially obscured aspects of modern consumer society has been the increasing accumulation of broken objects considered as ‘waste’ or ‘rubbish’. During the Neolithic period, central and south-eastern Europe were also to witness an unprecedented explosion of material remains, mostly pottery fragments, that would affect the social lives of local inhabitants, referred to as the Linearbandkeramik (LBK) and Starčevo-Körös-Criş (SKC) groups respectively. However, because of our modern tendency to write (pre)history in stages of technological development, the Neolithic is conventionally characterized as the moment where humans became masters over nature. Thus, it is emphasised that sedentism, agricultural production, and economic innovations like pottery were introduced. In contrast, the redefinition of the Neolithic as a 'thing-heavy world' (Robb 2013) allows envisioning the Neolithic as a world charged with broken objects. As such, this period can inform us of a unique form of knowledge on what people do when objects break. Determining how they were broken and deposited represent a fundamental way to understand this social knowledge. Through the study of the breakage and alteration of pottery fragments by a combination of wear, morphometric and failure analysis I show how breakage actions and broken objects shaped social practices in SKC sites from the Upper Tisza/Tisa Basin (NW Romania, NE Hungary and SW Ukraine), and LBK sites from the Northern Harz Foreland (northern Germany). Results indicate there was a significant variation in social responses to breakage in both regions resulting from the ubiquitous presence, continued exposure and movement of fragments through daily life, as well as from the paradoxical resilience and extensive cracking behaviour of their organic-tempered ceramics. This knowledge brought by living with broken objects marks a stark contrast to present lifestyles, and it becomes clear then that the modern waste crisis signals an epistemological crisis

The Archaeology of Hassanamesit Woods: The Sarah Burnee/Sarah Boston Farmstead

Between 2003 and 2013 the Fiske Center for Archaeological Research at the University of Massachusetts Boston conducted an intensive investigation of the Sarah Burnee/Sarah Boston Farmstead on Keith Hill in Grafton, Massachusetts. The project employed a collaborative method that involved working closely with the Town of Grafton, through the Hassanmesit Woods Management Committee, and the Nipmuc Nation, the state recognized government of the Nipmuc people. Yearly excavation and research plans were decided through consultation with both the Nipmuc Tribal Council, their designated representative, Dr. D. Rae Gould, and the Hassanamesit Woods Management Committee. Dr. Gould also played a continuous and active role in reviewing and collaborating on research activities including scholarly presentations at national and international academic meetings and public presentations at the community level. Large scale excavation between 2006 and 2013 focused on the Sarah Burnee/Sarah Boston farmstead that was occupied intensively between 1750 and 1840. Sarah Burnee and Sarah Boston were two of four Nipmuc women to own and possibly reside on the 206 acre parcel that today comprises Hassanamesit Woods. The other two, Sarah Robins and Sarah Muckamaug, were Sarah Burnee’s grandmother and mother respectively. Excavation, archaeogeophysical survey, soil chemistry, and micromorphological and macrobotanical analysis were combined with the analysis of material culture and faunal material to generate a detailed picture of Nipmuc life during the 18th and 19th centuries. Excavation also found evidence of earlier indigenous occupations spanning some 6,000 years. The most intensive period of occupation covered the period 1750 to 1840, but with a significant spike the period 1790 to 1830. This appears to coincide with the coming of age of Sarah Boston who continues to live in the household with her mother Sarah Burnee Philips. Based on a combination of the documentary, architectural and archaeological data, it seems that an addition was made the structure between 1799 and 1802. A rich material assemblage of more than 120,000 artifacts was recovered from the site that provides detailed information on cultural practices including foodways, exchange networks, agricultural activities and other work-related activities such as basket making. A wealth of foodways related artifacts as well as faunal and floral remains provide ample evidence of daily meals and feasting. The latter conclusion is particularly important because of the implications is has for demonstrating that the Hassanamisco Nipmuc were regularly engaged in political activities. We believe the findings of the project provide empirical evidence that counters arguments made by the Bureau of Indian Affairs that the Hassanamisco Nipmuc did not persist as a politically and culturally continuous community

Play Among Books

How does coding change the way we think about architecture? Miro Roman and his AI Alice_ch3n81 develop a playful scenario in which they propose coding as the new literacy of information. They convey knowledge in the form of a project model that links the fields of architecture and information through two interwoven narrative strands in an “infinite flow” of real books

Ambrose Bierce is Missing: And Other Historical Mysteries

What constitutes historical truth is often subject to change. Through ingenious detection, the accepted wisdom of one generation may become the discredited legend of another—or vice versa. In this wide- ranging study of historical investigation, former detective Joe Nickell allows the reader to look over his shoulder as he demonstrates the use of varied techniques in solving some of the world\u27s most perplexing mysteries. All the major categories of historical mystery are here—ancient riddles, biographical enigmas, hidden identity, “fakelore,” questioned artifacts, suspect documents, lost texts, obscured sources, and scientific challenges. Each is then illustrated by a complete case from the author\u27s own files. Nickell’s investigation of the giant Nazca drawings in Peru, for example—thought by some to provide proof of ancient extraterrestrial visitations—uses innovative techniques to reveal a very different origin. Other cases concern the 1913 disappearance of writer and journalist Ambrose Bierce, the authenticity of the Shroud of Turin, the truth about the identity of John Demjanjuk (“Ivan the Terrible” to Polish death camp victims), the fate of a lost colonial American text, the authenticity of Abraham Lincoln\u27s celebrated Bixby letter, and the apparent real-life model for a mysterious character in a novel by Nathaniel Hawthorne. In reaching his solutions, Nickell demonstrates a wide variety of investigative techniques—chemical and instrumental analyses, physical experimentation, a “psychological autopsy,” forensic identification, archival research, linguistic analysis, folklore study, and many others. His highly readable book will intrigue the scholar and the history buff no less than the mystery lover. Joe Nickell, a former investigator for a world-famous detective agency, teaches at the University of Kentucky and is author of several books, including Pen, Ink, and Evidence.https://uknowledge.uky.edu/upk_history_in_general/1002/thumbnail.jp