Filters








14,530 Hits in 3.4 sec

Devising a conceptual method for generating cryptocompression codograms of images without loss of information quality

Vladimir Barannik, Serhii Sidchenko, Dmitriy Barannik, Sergii Shulgin, Valeriy Barannik, Anton Datsun
2021 Eastern-European Journal of Enterprise Technologies  
This paper reports the development of a conceptual method for the cryptocompression coding of images on a differentiated basis without loss of information quality.  ...  The devised method does not introduce errors into the data in the coding process and refers to methods without loss of information quality.  ...  Scrambled images are the blurry representations of the original video data, on which all large details are distinguishable.  ... 
doi:10.15587/1729-4061.2021.237359 fatcat:4rc3qtt6dbf5hmif4lck6abe2u

Taming energy cost of disk encryption software on data-intensive mobile devices

Yang Hu, John C.S. Lui, Wenjun Hu, Xiaobo Ma, Jianfeng Li, Xiao Liang
2017 Future generations computer systems  
As for video playing and recording, video format is mp4, video resolution is 480×270, the choices of video length are 50min, 100min, 150min and 200min and video quality is of high definition.  ...  of video recording Fig. 5: Energy consumption of data sending through WIFI Fig. 6 : 6 Energy consumption of data receiving through WIFI in certain experiment.  ...  ,C n = LP n where L is n × n matrix and P i , C i are n × 1 matrices or vectors. Then attackers can solve L by computing L = [C 1 , . . . , C n ][P 1 , . . . , P n ] −1 .  ... 
doi:10.1016/j.future.2017.09.025 fatcat:5leq2p6s3vehncr7x7nseqzeiu

Adaptive Frequency Weighting for High-Performance Video Coding

Jianwen Chen, Jianhua Zheng, Feng Xu, John Villasenor
2012 IEEE transactions on circuits and systems for video technology (Print)  
We show that for the bitrate, quality levels, and resolutions typically associated with high-definition video, MBAFW can lead to overall bitrate reductions typically in the 5%-9% range over the methods  ...  used in state-of-the-art video-coding standards.  ...  The coding overhead was minimized through an approach that uses a set of three overall weighting strategies, a parameterized matrix description, and a differential parameter encoding approach that relies  ... 
doi:10.1109/tcsvt.2012.2189671 fatcat:b6emowc7k5esjja3iusby3yxdu

Proper Running Posture Guide: A Wearable Biomechanics Capture System

Xiaoyi Zhang, Ming-Chun Huang, Fengbo Ren Ren, Wenyao Xu, Nan Guan, Wang Yi
2013 Proceedings of the 8th International Conference on Body Area Networks  
Two types of correctional feedbacks are designed to provide users appropriate adjustment guidance: vibrating the areas of user body where improper poses are detected and visualizing running video with  ...  Threshold sum matrices are helpful in distinguishing improper running behavior, but may not ensure one hundred percent accuracy.  ...  The difference between threshold matrices and threshold sum probabilities can distinguish one improper behavior from another, as shown in Figure 14 .  ... 
doi:10.4108/icst.bodynets.2013.253700 dblp:conf/bodynets/ZhangHRXG013 fatcat:c5ymnd7qpfhvbj4iatemk2dm6m

Video bioinformatics analysis of human pluripotent stem cell morphology, quality, and cellular dynamics

Sabrina C. Lin, Antonio Loza, Lauren Antrim, Prue Talbot
2021 Stem Cells Translational Medicine  
Likewise, differentiating and undifferentiated colonies varied in growth rate, intensity, and motility.  ...  StemCellQC is a video bioinformatics software tool for the quantitative analysis of human pluripotent stem cell (hPSC) colonies.  ...  In applications of PSC to human therapies, quality control is essential and new methods are needed to ensure that high quality cells are used for differentiation and transfer to patients. 2 th the introduction  ... 
doi:10.1002/sctm.15-0352 pmid:34089307 pmcid:PMC8380446 fatcat:tpo2yediejhfvpaksoqpo6kcia

A Different Approach for Spatial Prediction and Transform Using Video Image Coding

D.Menaka D.Menaka
2013 IOSR Journal of Electronics and Communication Engineering  
A novel approach to jointly optimized spatial prediction the choice of the subsequent transform in video and image compression.  ...  In addition, the paper investigates the effect of rank in SVD decomposition to measure the quality in terms of compression ratio and PSNR.  ...  Coding, Lossless Predictive Coding DPCM, Huffman Coding of Differential Frames, Arithmetic Coding of Differential Frames the bit plane coding is a video frame with NxN pixels and each pixel is encoded  ... 
doi:10.9790/2834-0540106 fatcat:ls4s364wybe7zkppfbmmre72f4

A Comprehensive Motion Estimation Technique for the Improvement of EIS Methods Based on the SURF Algorithm and Kalman Filter

Xuemin Cheng, Qun Hao, Mengdi Xie
2016 Sensors  
In the process of global motion estimation, the feature points in the original videos are distinguished and the affine matrices are determined by using the values of matched feature points in the previous  ...  The image motion is then compensated with the affine matrices.  ...  Finally, the motion is compensated by using the filtered affine matrices  n A and  n B at frame n.  ... 
doi:10.3390/s16040486 pmid:27070603 pmcid:PMC4851000 fatcat:lvxvbxxt4jbf7eljntfmhvwhs4

Real-Time Artificial Intelligence-Based Histologic Classifications of Colorectal Polyps Using Narrow-Band Imaging

Yi Lu, Jiachuan Wu, Xianhua Zhuo, Minhui Hu, Yongpeng Chen, Yuxuan Luo, Yue Feng, Min Zhi, Chujun Li, Jiachen Sun
2022 Frontiers in Oncology  
We also collected 116 consecutive polyp videos to validate the accuracy of the CAD-N.ResultsA total of 10,573 images (7,032 images from 650 polyps and 3,541 normal mucous membrane images) from 478 patients  ...  Video validation results showed that the sensitivity, specificity, and accuracy of the CAD-N were 84.62%, 86.27%, and 85.34%, respectively.ConclusionsWe have developed real-time AI-based histologic classifications  ...  Hyperparameters were chosen through the AdamW optimizer.  ... 
doi:10.3389/fonc.2022.879239 pmid:35619917 pmcid:PMC9128404 fatcat:7s54bnoagfapxl3wrfeczagwk4

Speech-driven Facial Animations Improve Speech-in-Noise Comprehension of Humans [article]

Enrico Varano, Konstantinos Vougioukas, Pingchuan Ma, Stavros Petridis, Maja Pantic, Tobias Reichenbach
2021 bioRxiv   pre-print
Here we consider facial animations produced by a recently introduced generative adversarial network (GAN), and show that humans cannot distinguish between the synthesized and the natural videos.  ...  Importantly, we then show that the end-to-end synthesized videos significantly aid humans in understanding speech in noise, although the natural facial motions yield a yet higher audiovisual benefit.  ...  We note, however, that the standardized nature of the sentences in the GRID corpus might have hindered the differentiation between the natural and synthetic videos.  ... 
doi:10.1101/2021.12.18.471222 fatcat:uwdd46ztrzh7negl6dgwenao5y

Speech-Driven Facial Animations Improve Speech-in-Noise Comprehension of Humans

Enrico Varano, Konstantinos Vougioukas, Pingchuan Ma, Stavros Petridis, Maja Pantic, Tobias Reichenbach
2022 Frontiers in Neuroscience  
Here we consider facial animations produced by a recently introduced generative adversarial network (GAN), and show that humans cannot distinguish between the synthesized and the natural videos.  ...  Importantly, we then show that the end-to-end synthesized videos significantly aid humans in understanding speech in noise, although the natural facial motions yield a yet higher audiovisual benefit.  ...  Army through project 71931-LS-INT.  ... 
doi:10.3389/fnins.2021.781196 pmid:35069100 pmcid:PMC8766421 fatcat:x6hlhod2uzfrvfq6luoc532kcy

Building Principles and Application of Multifunctional Video Information System [chapter]

Mahmudov Ergash, Fedosov Andrew
2010 Digital Video  
Subjectively loss-less video compression is achieved if only zero values of frequency matrices are discarded while data transmission.  ...  become unacceptable (details in region 1 and 2 can't be distinguished).  ...  How to reference In order to correctly reference this scholarly work, feel free to copy and paste the following: Available from: http://www.intechopen.com/books/digital-video/building-principles-and-application-ofmultifunctional-video-information-system  ... 
doi:10.5772/8044 fatcat:tbwqgh2jpjhr3iwnlnx5u5svdu

Fast Intra-frame Compression for Video Conferencing using Adaptive Shift Coding

Ali MakkiSagheer, Ahmeed Suliman Farhan, Loay E. George
2013 International Journal of Computer Applications  
General Terms Video compression, image compression, video conference.  ...  Overhead of video transmission over the Internet is increasing the exponentially every day. Optimization of natural bandwidth is the basic motive by compressing video to the maximum extend.  ...  Therefore, video compression schemes are ultimate important so as to reduce the number of bits needed to represent a frame sequence through transmission.  ... 
doi:10.5120/14034-1899 fatcat:yzrruosgtfhh3dbpy7j2jeo45i

Page 3649 of Psychological Abstracts Vol. 83, Issue 9 [page]

1996 Psychological Abstracts  
Speech intelligibility (Exp 1) was evaluated using the speech reception threshold (SRT), and sound quality was examined through judgments of clearness and pieas- antness (Exp 2) and loudness and sharpness  ...  Only high velocity thresh- olds correlated with differential luminance sensitivity.  ... 

Analyzing Visibility Configurations

C Dachsbacher
2011 IEEE Transactions on Visualization and Computer Graphics  
We adapt co-occurrence matrices for visibility analysis and generalize them to operate on clusters of triangular surfaces instead of pixels.  ...  The Sponza model is courtesy of Marko Dabrovic, other models used in the example scenes and the accompanying video are courtesy of Crytek GmbH.  ...  The differentiation between solid and see-through blockers, thus, depends on their image space size.  ... 
doi:10.1109/tvcg.2010.77 pmid:20498504 fatcat:6a7pppeatfbdtg4iyts5og3ade

Research and Implementation of Intelligent Evaluation System of Teaching Quality in Universities Based on Artificial Intelligence Neural Network Model

Bo Gao, Naeem Jan
2022 Mathematical Problems in Engineering  
Text data are related to teachers' teaching quality and can give objective results for education quality evaluation.  ...  well as the intelligent quantitative evaluation system of teaching quality and explores the technical ways to discover the effectiveness of measurable factors on the evaluation of teaching quality, and  ...  By processing the similarity matrices, the users are swapped in the ranks of the matrices, and the users who are clustered in the same class as above are swapped together.  ... 
doi:10.1155/2022/8224184 fatcat:x45ttyrzxjgfhht3yaz22kh2am
« Previous Showing results 1 — 15 out of 14,530 results