Works (61)
Updated: April 4th, 2024 08:04
2023 journal article
Analysis of ENF Signal Extraction From Videos Acquired by Rolling Shutters
IEEE TRANSACTIONS ON INFORMATION FORENSICS AND SECURITY, 18, 4229–4242.
author keywords: ~Electric network frequency (ENF); rolling shut-ter; filter bank; multirate signal processing; multimedia forensics
TL;DR:
Analysis of two representative methods for extracting ENF signals from visual signals acquired by cameras using the rolling-shutter mechanism implies that the periodic zeroing-out method offers more accurate frequency estimates, but the performance improvement is moderate.
(via Semantic Scholar)
doi.org (repository)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: August 28, 2023
2023 article
Automated measures of sentiment via transformer- and lexicon-based sentiment analysis (TLSA)
Zhao, X., & Wong, C.-W. (2023, November 21). JOURNAL OF COMPUTATIONAL SOCIAL SCIENCE, Vol. 11.
author keywords: Automated content analysis; Emotions; Sentiment analysis; Software engineering; Deep learning; Dictionaries
TL;DR:
An open and free web service named transformer- and lexicon-based sentiment analysis (TLSA), which integrates diverse tools and offers validation metrics, empowering users with limited computational knowledge and resources to reap the benefit of state-of-the-art computational methods.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
4. Quality Education
(OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: December 11, 2023
2023 journal article
Group Testing With Side Information via Generalized Approximate Message Passing
IEEE TRANSACTIONS ON SIGNAL PROCESSING, 71, 2366–2375.
author keywords: Compressed sensing; contact tracing; generalized approximate message passing (GAMP); nonadaptive group testing
TL;DR:
Side information (SI) collected from contact tracing (CT) is incorporated into nonadaptive/single-stage group testing algorithms based on generalized approximate message passing (GAMP) and results show that the GAMP-based algorithms provide improved accuracy.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: July 31, 2023
2023 journal article
Remote Blood Oxygen Estimation From Videos Using Neural Networks
IEEE JOURNAL OF BIOMEDICAL AND HEALTH INFORMATICS, 27(8), 3710–3720.
author keywords: Convolutional neural networks; machine learning; remote mobile sensing; SpO(2) monitoring
TL;DR:
The first convolutional neural network based noncontact SpO noncontact estimation scheme using smartphone cameras is proposed, which outperform the state-of-the-art model that is designed for contact-based SpO<inline-formula><tex-math notation="LaTeX") measurement and demonstrates the explainability by visualizing the weights for channel combination.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 28, 2023
2023 article
Thermal Estimation for 3D-ICs through Generative Networks
2023 IEEE INTERNATIONAL 3D SYSTEMS INTEGRATION CONFERENCE, 3DIC.
author keywords: 3DIC; thermal; generative; GAN; hybrid-bonding
TL;DR:
This paper presents a generative approach for modeling the power to heat dissipation for a 3DIC and shows that, given the power map, the model can generate the resultant heat for the bulk, opening the door for thermally aware floorplanning.
(via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 14, 2023
2022 journal article
A Multi-Channel Ratio-of-Ratios Method for Noncontact Hand Video Based SpO(2) Monitoring Using Smartphone Cameras
IEEE JOURNAL OF SELECTED TOPICS IN SIGNAL PROCESSING, 16(2), 197–207.
author keywords: Cameras; Blood; Feature extraction; Skin; Pulse oximeter; Estimation; Optical filters; Blood oxygen saturation; contact-free; hand videos; ratio-of-ratios model; smartphone
TL;DR:
This paper proposes a noncontact method for SpO monitoring using hand videos acquired by smartphones, and designs adaptive narrow bandpass filters based on accurately estimated heart rate to obtain the most cardiac-related AC component for each color channel.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: June 13, 2022
2022 journal article
Communication-Efficient Federated Learning via Predictive Coding
IEEE JOURNAL OF SELECTED TOPICS IN SIGNAL PROCESSING, 16(3), 369–380.
author keywords: Predictive models; Servers; Collaborative work; Predictive coding; Entropy coding; Costs; Quantization (signal); Federated learning; distributed optimization; predictive coding
TL;DR:
This paper proposes a predictive coding based compression scheme for federated learning that has shared prediction functions among all devices and allows each worker to transmit a compressed residual vector derived from the reference.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: May 31, 2022
2022 article
Contact-Free Simultaneous Sensing of Human Heart Rate and Canine Breathing Rate for Animal Assisted Interactions
NINTH INTERNATIONAL CONFERENCE ON ANIMAL-COMPUTER INTERACTION, ACI 2022.
author keywords: human-canine interaction; contact-free physiological sensing; computer vision; signal processing
TL;DR:
This preliminary effort toward a contact-free approach to facilitate AAI assessment via the physiological sensing of humans and canines using consumer-grade cameras focuses on verifying the technological feasibility of remotely sensing the heart rate signal of the human subject and the breathing rates of the dog subject while they are interacting.
(via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: December 18, 2023
2022 article
Federated Learning via Plurality Vote
Yue, K., Jin, R., Wong, C.-W., & Dai, H. (2022, December 7). IEEE TRANSACTIONS ON NEURAL NETWORKS AND LEARNING SYSTEMS, Vol. 12.
author keywords: Distributed optimization; efficient communication; federated learning; neural network quantization
TL;DR:
This work proposes a new scheme named federated learning via plurality vote (FedVote), which can reduce quantization error and converges faster compared to the methods directly quantizing the model updates.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: January 9, 2023
2022 journal article
Invisible Geolocation Signature Extraction From a Single Image
IEEE TRANSACTIONS ON INFORMATION FORENSICS AND SECURITY, 17, 2598–2613.
author keywords: Recording; Cameras; Sensors; Entropy; Time-frequency analysis; Frequency estimation; Location awareness; Region-of-capturing localization; electric network frequency (ENF); frequency estimation; entropy minimization; rolling shutter
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: August 1, 2022
2022 article
Mismatched Estimation in the Distance Geometry Problem
2022 56TH ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS, AND COMPUTERS, pp. 1031–1035.
TL;DR:
This paper argues that more accurate estimates can be obtained when an estimation procedure that uses the correct likelihood function of noisy measurements is performed, and demonstrates that least-squares estimates could be suboptimal by several dB.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: June 5, 2023
2022 article
Modeling of Adaptive Receiver Performance Using Generative Adversarial Networks
IEEE 72ND ELECTRONIC COMPONENTS AND TECHNOLOGY CONFERENCE (ECTC 2022), pp. 1958–1963.
author keywords: SerDes; receiver; behavior modeling; adaptive; generative; GAN; DFE; IBIS-AMI
TL;DR:
A data-driven approach to modeling a high-speed serializer/deserializer (SerDes) receiver through generative adversarial networks (GANs) through the use of a discriminator structure that improves the training to generate a contour plot that makes it difficult to distinguish the ground truth.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
10. Reduced Inequalities
(OpenAlex)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: September 19, 2022
2022 article
RxGAN: Modeling High-Speed Receiver through Generative Adversarial Networks
MLCAD '22: PROCEEDINGS OF THE 2022 ACM/IEEE 4TH WORKSHOP ON MACHINE LEARNING FOR CAD (MLCAD), pp. 167–172.
Contributors: P. Kashyap n
author keywords: SerDes; receiver; behavior modeling; adaptive; generative; measurement; GAN; DFE; IBIS-AMI
TL;DR:
This work proposes a data-driven approach using generative adversarial training to model a real-world receiver with varying DFE and CTLE configurations while handling different channel conditions and bitstreams.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
9. Industry, Innovation and Infrastructure
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: October 31, 2022
2021 article
CONTACT TRACING ENHANCES THE EFFICIENCY OF COVID-19 GROUP TESTING
2021 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING (ICASSP 2021), pp. 8168–8172.
author keywords: Contact tracing; nonadaptive group testing; compressed sensing; overlapping group LASSO; generalized approximate message passing (GAMP)
TL;DR:
This work uses side information (SI) collected from contact tracing (CT) within nonadaptive/single-stage group testing algorithms to explore and demonstrate how CT SI can further improve group testing performance.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: November 29, 2021
2021 article
High Speed Receiver Modeling Using Generative Adversarial Networks
IEEE 30TH CONFERENCE ON ELECTRICAL PERFORMANCE OF ELECTRONIC PACKAGING AND SYSTEMS (EPEPS 2021).
author keywords: eye diagram; IBIS-AMI; generative model; generative adversarial network; GAN; receiver
TL;DR:
The model is not built with domain knowledge but learned from a wide range of channel conditions and input bitstreams to generate an eye diagram, and a neural network model is developed to evaluate the generated eye diagram's relevant characteristics, such as eye height and width.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: March 21, 2022
2021 journal article
Learning Your Heart Actions From Pulse: ECG Waveform Reconstruction From PPG
IEEE INTERNET OF THINGS JOURNAL, 8(23), 16734–16748.
author keywords: Electrocardiography; Monitoring; Blood; Discrete cosine transforms; Biomedical monitoring; Blood vessels; Skin; Discrete cosine transform (DCT); electrocardiogram (ECG); inverse problem; photoplethysmogram (PPG)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: November 29, 2021
2021 journal article
On Microstructure Estimation Using Flatbed Scanners for Paper Surface-Based Authentication
IEEE TRANSACTIONS ON INFORMATION FORENSICS AND SECURITY, 16, 3039–3053.
author keywords: Authentication; Microscopy; Optical microscopy; Feature extraction; Cameras; Servers; Decoding; Authentication; physically unclonable; paper surface; microstructure; norm map; flatbed scanner; specular reflection
TL;DR:
This work examines several key research questions of feature extraction in both scientific and engineering aspects to facilitate the deployment of paper surface-based authentication when flatbed scanners are used as the acquisition device and analytically shows that log(EER) is decreasing linearly in the edge length of a paper patch.
(via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: June 10, 2021
2021 conference paper
Toward Effective Automated Content Analysis via Crowdsourcing
IEEE International Conference on Multimedia and Expo (ICME).
TL;DR:
This paper proposes a quality-aware semantic data annotation system that can collect high-quality answers of subjective semantic features at a large scale and demonstrates machine learning tasks that can lead to consistent learning behavior with 70%–80% accuracy.
(via Semantic Scholar)
Source: ORCID
Added: July 16, 2022
2020 journal article
Adaptive Multi-Trace Carving for Robust Frequency Tracking in Forensic Applications
IEEE Transactions on Information Forensics and Security.
author keywords: Frequency estimation; Forensics; Spectrogram; Signal to noise ratio; Estimation; Hidden Markov models; Dynamic programming; Spectrogram; multi-trace tracking; dynamic programming; heart rate; electric network frequency (ENF)
TL;DR:
The proposed Adaptive Multi-Trace Carving (AMTC) algorithm is a unified approach for detecting and tracking one or more subtle frequency components under very low signal-to-noise ratio (SNR) conditions and in near real time.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Source: ORCID
Added: October 16, 2020
2020 article
Method, apparatus, and system for object tracking sensing using broadcasting
Lai, H.-quoc D., Claffey, D. N., Chen, C., Zhang, F., Wu, C., Chau-Wai, W. O. N. G., … Liu, K. J. R. (2020, August).
Source: ORCID
Added: October 16, 2020
2020 journal article
On Microstructure Estimation Using Flatbed Scanners for Paper Surface Based Authentication
ArXiv Preprint ArXiv:2008.13000.
Source: ORCID
Added: October 16, 2020
2019 journal article
Analyzing Trend for US Immigrants' e-Health Engagement from 2008 to 2013
HEALTH COMMUNICATION, 34(11), 1259–1269.
MeSH headings : Adolescent; Adult; Emigrants and Immigrants; Female; Humans; Information Seeking Behavior; Male; Surveys and Questionnaires; Telemedicine; United States; Young Adult
TL;DR:
It is revealed that the U.S. immigrants exhibited an increasing trend on two types of e-health engagement: tracking personal health information online and communicating with a doctor online and that Asian immigrants and immigrants with 13–34 years of residence were more proactive to engage in various e- health activities.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: September 16, 2019
2019 article
Apparatus, systems and methods for event recognition based on a wireless signal
Xu, Q., Zhang, F., Chen, C., Wang, B., Wu, C., Zhang, H., … others. (2019, August). Google Patents.
Source: ORCID
Added: October 16, 2020
2019 article
Apparatus, systems and methods for fall-down detection based on a wireless signal
Zhang, F., Chen, C., Xu, Q., Wang, B., Wu, C., Zhang, H., … others. (2019, August). Google Patents.
Source: ORCID
Added: October 16, 2020
2019 conference paper
ECG reconstruction via PPG: A pilot study
IEEE/EMBS International Conference on Biomedical & Health Informatics (BHI). Presented at the IEEE.
Event: IEEE
TL;DR:
A transform is proposed to map the discrete cosine transform coefficients of each PPG cycle to those of the corresponding ECG cycle, and the waveform of ECG is inferred via the PPG signals to obtain the reconstructed ECG waveform.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Source: ORCID
Added: October 16, 2020
2019 conference paper
ENF Signal Extraction for Rolling-shutter Videos Using Periodic Zero-Padding
IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2667–2671.
Event: IEEE
Source: ORCID
Added: October 16, 2020
2019 article
Efficient Video Data Structure and Compression Scheme for Fabric Wicking Phenomenon Studies
2019 2ND IEEE CONFERENCE ON MULTIMEDIA INFORMATION PROCESSING AND RETRIEVAL (MIPR 2019), pp. 415–418.
Event: IEEE
TL;DR:
Using the volume of blocks as the basic storage unit rather than using the frame as most off-the-shelf video codecs do allows quick retrieval of time series data and can achieve a balance between the time overhead and memory overhead.
(via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: November 18, 2019
2019 journal article
Factors Affecting ENF Capture in Audio
IEEE TRANSACTIONS ON INFORMATION FORENSICS AND SECURITY, 14(2), 277–288.
author keywords: ENF traces; embedding; recording environment; recording devices
TL;DR:
The impact of the characteristics of an audio recorder and the environment and manner of recording on the intrinsically captured ENF are shown and analyzed and can help inform related studies in the future.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: April 20, 2020
2019 article
Learning Your Heart Actions From Pulse: ECG Waveform Reconstruction From PPG
Zhu, Q., Tian, X., Wong, C.-W., & Wu, M. (2019, October 22). BioRxiv, Vol. 10, p. 815258.
TL;DR:
The reconstruction capability of the proposed method may enable low-cost ECG screening for continuous and long-term monitoring and may open up a new research direction to transfer the understanding of clinical ECG knowledge base to build a knowledge base for PPG and data from wearable devices.
(via Semantic Scholar)
Source: ORCID
Added: October 16, 2020
2019 article
Method, apparatus, and system for object tracking and navigation
Zhang, F., Lai, H.-Q. D., Chen, C.-I., Chau-Wai, W. O. N. G., Wang, B., Chen, C., … Liu, K. J. R. (2019, April). Google Patents.
Source: ORCID
Added: October 16, 2020
2019 article
Method, apparatus, server and system for real-time vital sign detection and monitoring
Zhang, F., Chen, C., Xu, Q., Wang, B., Wu, C., Zhang, H., … others. (2019, December). Google Patents.
Source: ORCID
Added: October 16, 2020
2019 article
Method, apparatus, server and system for vital sign detection and monitoring
Chen, C., Zhang, F., Xu, Q., Wang, B., Wu, C., Zhang, H., … others. (2019, May).
Source: ORCID
Added: October 16, 2020
2019 conference paper
Video-Based Wetting Detection For Blended Fabrics
53rd Asilomar Conference on Signals, Systems, and Computers.
TL;DR:
An iterative merging algorithm rooted from the likelihood ratio test is developed to obtain a coarse-level timestamp, which is then refined using a parametric curve fitted to a small neighborhood for wetting event detection.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Source: ORCID
Added: October 16, 2020
2018 conference paper
Adaptive multi-trace carving based on dynamic programming
52nd Asilomar Conference on Signals, Systems, and Computers, 1716–1720.
Event: IEEE
TL;DR:
Experimental results reveal that the proposed method outperforms the state-of-the-art methods especially under low SNR conditions.
(via Semantic Scholar)
Source: ORCID
Added: October 16, 2020
2018 journal article
Analyzing trend for US immigrants’ e-Health engagement from 2008 to 2013
Health Communication.
Source: ORCID
Added: October 16, 2020
2018 article
Counterfeit detection scheme using paper surfaces and mobile cameras
Wu, M., & Wong, C.-W. (2018, November).
Source: ORCID
Added: October 16, 2020
2018 article
Encoding and decoding perceptually-quantized video content
Froehlich, J., Atkins, R., Wong, C.-W., Su, G.-M., & Yin, P. (2018, April).
Source: ORCID
Added: October 16, 2020
2018 conference paper
Enhanced Geometric Reflection Models for Paper Surface Based Authentication
IEEE International Workshop on Information Forensics and Security (WIFS), 1–7.
Event: IEEE
TL;DR:
It is discovered that high-frequency subbands of reconstructed 3D surfaces are more powerful than the norm map in describing the uniqueness of a physical surface.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
10. Reduced Inequalities
(OpenAlex)
Source: ORCID
Added: October 16, 2020
2018 conference paper
Invisible geo-location signature in a single image
IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 1987–1991.
Event: IEEE
Source: ORCID
Added: October 16, 2020
2018 journal article
Segmenting and Understanding Publics in a Social Media Information Sharing Network: An Interactional and Dynamic Approach
International Journal of Strategic Communication, 12(1), 25–45.
Source: ORCID
Added: February 22, 2019
2018 article
Signal reshaping approximation
Su, G.-M., Wong, C.-W., Chou, H.-T., & Kottayil, N. K. A. M. B. A. L. L. U. R. (2018, September).
Source: ORCID
Added: October 16, 2020
2017 journal article
Counterfeit Detection Based on Unclonable Feature of Paper Using Mobile Camera
IEEE Transactions on Information Forensics and Security, 12(8), 1885–1899.
author keywords: Anti-counterfeit; paper physically unclonable features (PUFs); mobile cameras; photometric stereo; microstructure
TL;DR:
It is shown that images captured by mobile cameras can be used for authentication when the camera flashlight is exploited for creating a semi-controlled lighting condition, and proposed new algorithms to demonstrate that the normal vector field of paper surface can be estimated by using multiple camera-captured images of different viewpoints.
(via Semantic Scholar)
Source: ORCID
Added: February 22, 2019
2017 conference paper
Evolving publics, evolving messages: Analyzing publics’ information sharing network in a social-mediated crisis
67th Annual Conference of International Communication Association (ICA’17).
Source: ORCID
Added: October 16, 2020
2017 conference paper
Fitness Heart Rate Measurement Using Face Videos
IEEE International Conference on Image Processing (ICIP). Presented at the IEEE.
Event: IEEE
TL;DR:
This work proposes a heart-rate monitoring method for fitness exercise videos by designing a highly precise motion compensation scheme with the help of the optical flow, and uses motion information as a cue to adaptively remove ambiguous frequency components for improving the heart rates estimates.
(via Semantic Scholar)
Source: ORCID
Added: October 16, 2020
2017 thesis
Micro Signal Extraction and Analytics
Source: ORCID
Added: October 16, 2020
2017 conference paper
Toward a multilevel e-health engagement model: Analyzing trend for immigrants’ e-health engagement from 2008 to 2013
67th Annual Conference of International Communication Association (ICA’17).
Source: ORCID
Added: October 16, 2020
2017 conference paper
We like the future more: Examining the influence of crisis response strategies on public sentiment from a big data perspective
103rd Annual Convention of National Communication Association (NCA’17).
Source: ORCID
Added: October 16, 2020
2016 journal article
Impact Analysis of Baseband Quantizer on Coding Efficiency for HDR Video
IEEE Signal Processing Letters, 23(10), 1354–1358.
author keywords: Bitdepth; HEVC/H. 265; high dynamic range (HDR); quantization; reshaping; transform coding
TL;DR:
This work shows analytically and verify using test sequences that the existence of the baseband quantizer lowers the coding efficiency, and suggests that video information reduction in terms of quantization error should be incurred in the video codec instead of on the base band signal.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: February 22, 2019
2016 journal article
Information on the MAST ENF Power Signature Dataset
Source: ORCID
Added: October 16, 2020
2015 conference paper
A Study on PUF characteristics for counterfeit detection
2015 IEEE International Conference on Image Processing (ICIP), 1643–1647.
Event: IEEE
TL;DR:
A study to gain a better understanding in the factors affecting the authentication performance, with a consideration of the friendliness under mobile imaging finds that the density of foreground objects have a dominant impact on the Authentication performance.
(via Semantic Scholar)
Source: ORCID
Added: February 22, 2019
2015 conference paper
Counterfeit detection using paper PUF and mobile cameras
2015 IEEE International Workshop on Information Forensics and Security (WIFS). Presented at the IEEE.
Event: IEEE
TL;DR:
This work shows that images captured by mobile cameras can be directly used for authentication by exploiting the camera flashlight to create a semi-controlled lighting condition and proposes new algorithms to demonstrate that the microscopic normal vector field of paper surface can be estimated by using multiple camera-captured images of different viewpoints.
(via Semantic Scholar)
Source: ORCID
Added: February 22, 2019
2014 conference paper
ENF Signal Induced by Power Grid
Proceedings of the 2nd ACM International Workshop on Immersive Media Experiences - ImmersiveMe '14.
TL;DR:
The electric network frequency (ENF) signal inherently embedded in the soundtrack and/or image sequence of video to temporally align video recordings is exploited to synchronize video recordings by aligning the embedded ENF signals.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: February 22, 2019
2014 conference paper
ENF signal induced by power grid: A new modality for video synchronization
ACM International Workshop on Immersive Media Experiences, 13–18.
Event: ACM
Source: ORCID
Added: October 16, 2020
2011 journal article
Analysis of Dyadic Approximation Error for Hybrid Video Codecs With Integer Transforms
IEEE Transactions on Image Processing, 20(10), 2780–2787.
TL;DR:
An analysis of the dyadic approximation error introduced by the integerization of transform coding in H.264/AVC-like codecs finds that the “nonflat error” has a substantial impact on video quality if the number of shifting bits at decoder side (DQ_BITS) is small.
(via Semantic Scholar)
Source: ORCID
Added: February 22, 2019
2011 journal article
Comments on "2-D Order-16 Integer Transforms for HD Video Coding
IEEE Transactions on Circuits and Systems for Video Technology, 21(11), 1765–1767.
author keywords: Error analysis; integer transform; nonorthogonal error; transform coding
TL;DR:
This letter is to enhance and clarify the proof of Dong 's work, and point out three problems found in derivations and also give two comments on the proposed NICTs.
(via Semantic Scholar)
Source: ORCID
Added: February 22, 2019
2011 journal article
Transform Kernel Selection Strategy for the H.264/AVC and Future Video Coding Standards
IEEE Transactions on Circuits and Systems for Video Technology, 21(11), 1631–1645.
author keywords: Adaptive transforms; H.264/AVC; integer cosine transforms; kernel design; rate-distortion; transform coding; video coding
TL;DR:
This proposed frame-based AKM gives similar, or even better, performance as the proposed macroblock-based AKM and substantially reduces computation and certainly gives a good improvement in terms of the PSNR and bitrate compared to those obtained from the H.264/AVC default scheme and other MB-AKM schemes available in the literature.
(via Semantic Scholar)
Source: ORCID
Added: February 22, 2019
2010 thesis
Adaptive integer kernels and dyadic approximation error analysis for state-of-the-art video codecs
The Hong Kong Polytechnic University.
Source: ORCID
Added: October 16, 2020
2009 conference paper
Transform kernel selection strategy for the H.264
Annual Summit and Conference, APSIPA, 64–70.
Event: APSIPA
Source: ORCID
Added: October 16, 2020
journal article
Information on the MAST ENF Power Signature Datasets Updated: May 2016
Hajj-Ahmad, A., Wong, C.-W., & Wu, M.
Source: ORCID
Added: October 16, 2020
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