Results 21 to 30 of about 3,580,654 (226)
EURASIP Journal on Wireless Communications and Networking, 2019 Compressed sensing (CS)-based sparse channel estimation requires the sensing matrix with the minimum mutual coherence (MC), and its corresponding pilot pattern obtain optimal estimation performance.
Yang Nie, Xinle Yu, Zhanxin Yang
doaj +1 more source
Digital watermarking for video [PDF]
Proceedings of 13th International Conference on Digital Signal Processing, 2002 An MPEG-based technique for embedding digital "watermarks" into digital video is proposed. The watermarking technique has been proposed as a method of hiding secret information in the signals so as to discourage unauthorized copying or attest the origin of the media.
Hzu, Chiou-Tung, Wu, Ja-Ling
openaire +3 more sources
Estimating Digital Product Trade through Corporate Revenue Data [PDF]
Nature Communications volume 15, Article number: 5262 (2024), 2023 Despite global efforts to harmonize international trade statistics, our understanding of digital trade and its implications remains limited. Here, we introduce a method to estimate bilateral exports and imports for dozens of sectors starting from the corporate revenue data of large digital firms. This method allows us to provide estimates for digitally
arxiv +1 more source
Multimodal stance and engagement in digital video methods articles
Ibérica, 2023 The proliferation of digital media technologies has led to fundamental changes in the way that we communicate, changes that have also been felt in the realm of scholarly communication.
Christoph Hafner
doaj +1 more source
Mining Contextual Information for Ephemeral Digital Video Preservation
International Journal of Digital Curation, 2009 For centuries the archival community has understood and practiced the art of adding contextual information while preserving an artifact. The question now is how these practices can be transferred to the digital domain.
Chirag Shah
doaj +11 more sources
PRNU-Based Source Device Attribution for YouTube Videos [PDF]
Digital Investigation, March 2019, 2019 Photo Response Non-Uniformity (PRNU) is a camera imaging sensor imperfection which has earned a great interest for source device attribution of digital videos. A majority of recent researches about PRNU-based source device attribution for digital videos do not take into consideration the effects of video compression on the PRNU noise in video frames ...
arxiv +1 more source
An Overview of Digital Video Watermarking
IEEE transactions on circuits and systems for video technology (Print), 2018 The illegal distribution of a digital movie is a common and significant threat to the film industry. With the advent of high-speed broadband Internet access, a pirated copy of a digital video can now be easily distributed to a global audience. A possible
Md. Asikuzzaman, M. Pickering
semanticscholar +1 more source
Encryption and Compression Digital Video Files using Artificial Neural Networks and Genetic Algorithm [PDF]
مجلة التربية والعلم, 2019 The research and studies of encryption and compression of digital files to the confidentiality and ease of dealing with networks and the Internet, by reducing the size of files transmitted through multimedia, and also used to increase the confidentiality
Hasan Anwer
doaj +1 more source
How to build a low-cost underwater camera housing for aquatic research
FACETS, 2017 Remote cameras are an increasingly important tool in field-based biological research. Terrestrial researchers can purchase inexpensive off-the-shelf cameras, but aquatic researchers face challenges in adopting similar systems for underwater science ...
Jonathan A. Bergshoeff +3 more
doaj +1 more source
JMIR mHealth and uHealth, 2021 BackgroundVideo is a versatile and popular medium for digital health interventions. As mobile device and app technology advances, it is likely that video-based interventions will become increasingly common.
Harshbarger, Camilla +7 more
doaj +1 more source