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Neural texture transfer assisted video coding with adaptive up-sampling 期刊论文  OAI收割
SIGNAL PROCESSING-IMAGE COMMUNICATION, 2022, 卷号: 107, 页码: 10
作者:  Yu, Li;  Chang, Wenshuai;  Quan, Weize;  Xiao, Jimin;  Yan, Dong-Ming
  |  收藏  |  浏览/下载：46/0  |  提交时间：2022/07/25
HEVC/H.265 Intra Coding Based on the Human Visual System 期刊论文  OAI收割
Ieee Access, 2019, 卷号: 7, 页码: 186587-186599
作者:  D.H.Fu;  Y.J.Wang;  B.Fan;  N.N.Ding
  |  收藏  |  浏览/下载：98/0  |  提交时间：2020/08/24
HDR video quality assessment: Perceptual evaluation of compressed HDR video 期刊论文  OAI收割
JOURNAL OF VISUAL COMMUNICATION AND IMAGE REPRESENTATION, 2018, 卷号: 57, 页码: 76-83
作者:  Wang, Shiqi;  Pan, Xiaofei;  Zhang, Jiaqi;  Wang, Shanshe;  Zhou, Yun
  |  收藏  |  浏览/下载：217/0  |  提交时间：2019/04/03
High-Performance Motion Estimation for Image Sensors with Video Compression 期刊论文  OAI收割
SENSORS, 2015, 卷号: 15, 期号: 8, 页码: 20752-20778
作者:  Xu, Weizhi;  Yin, Shouyi;  Liu, Leibo;  Liu, Zhiyong;  Wei, Shaojun
  |  收藏  |  浏览/下载：114/0  |  提交时间：2019/12/13
Repairing imperfect video enhancement algorithms using classification-based trained filters 期刊论文  OAI收割
SIGNAL IMAGE AND VIDEO PROCESSING, 2011, 卷号: 5, 期号: 3, 页码: 307-313
作者:  Shao, Ling;  Zhang, Hui;  Wang, Liang;  Wang, Lijun
收藏  |  浏览/下载：49/0  |  提交时间：2015/11/08
The new approach for infrared target tracking based on the particle filter algorithm (EI CONFERENCE) 会议论文  OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications, May 24, 2011 - May 24, 2011, Beijing, China
作者:  Sun H.;  Han H.-X.;  Sun H.
收藏  |  浏览/下载：56/0  |  提交时间：2013/03/25
Target tracking on the complex background in the infrared image sequence is hot research field. It provides the important basis in some fields such as video monitoring  precision  and video compression human-computer interaction. As a typical algorithms in the target tracking framework based on filtering and data connection  the particle filter with non-parameter estimation characteristic have ability to deal with nonlinear and non-Gaussian problems so it were widely used. There are various forms of density in the particle filter algorithm to make it valid when target occlusion occurred or recover tracking back from failure in track procedure  but in order to capture the change of the state space  it need a certain amount of particles to ensure samples is enough  and this number will increase in accompany with dimension and increase exponentially  this led to the increased amount of calculation is presented. In this paper particle filter algorithm and the Mean shift will be combined. Aiming at deficiencies of the classic mean shift Tracking algorithm easily trapped into local minima and Unable to get global optimal under the complex background. From these two perspectives that "adaptive multiple information fusion" and "with particle filter framework combining"  we expand the classic Mean Shift tracking framework.Based on the previous perspective  we proposed an improved Mean Shift infrared target tracking algorithm based on multiple information fusion. In the analysis of the infrared characteristics of target basis  Algorithm firstly extracted target gray and edge character and Proposed to guide the above two characteristics by the moving of the target information thus we can get new sports guide grayscale characteristics and motion guide border feature. Then proposes a new adaptive fusion mechanism  used these two new information adaptive to integrate into the Mean Shift tracking framework. Finally we designed a kind of automatic target model updating strategy to further improve tracking performance. Experimental results show that this algorithm can compensate shortcoming of the particle filter has too much computation  and can effectively overcome the fault that mean shift is easy to fall into local extreme value instead of global maximum value.Last because of the gray and fusion target motion information  this approach also inhibit interference from the background  ultimately improve the stability and the real-time of the target track. 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).  
Optimization on motion estimation algorithm based on H. 264 (EI CONFERENCE) 会议论文  OAI收割
2010 3rd International Conference on Advanced Computer Theory and Engineering, ICACTE 2010, August 20, 2010 - August 22, 2010, Chengdu, China
Wen X.; Li G.
收藏  |  浏览/下载：55/0  |  提交时间：2013/03/25
Motion estimation is a very important part of video compression. As a result of using precision of motion vector in H.264 encoder  the computational cost increases rapidly  and motion estimation is the most time-consuming stage. In this paper  based on the UMHexagonS algorithm  an optimized algorithm is proposed based on the dynamic search window selection  big hexagon and small hexagon search mode respectively  which saves motion estimation time effectively with a little quality loss. Experiments with some typical video sequences show that compared to the original UMHexagonS algorithm  this new algorithm can save about 17.851 % motion estimation time and reduce the complexity of original scheme as well as enhance the real time performance of encoder and almost has no changes in the reconstructed picture quality and bitrates. 2010 IEEE.  
Storage and compression design of high speed CCD (EI CONFERENCE) 会议论文  OAI收割
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, November 19, 2008 - November 21, 2008, Chengdu, China
Cai X.; Zhai L. P.
收藏  |  浏览/下载：57/0  |  提交时间：2013/03/25
In current field of CCD measurement  large area and high resolution CCD is used to obtain big measurement image  so that  speed and capacity of CCD requires high performance of later storage and process system. The paper discusses how to use SCSI hard disk to construct storage system and use DSPs and FPGA to realize image compression. As for storage subsystem  Because CCD is divided into multiplex output  SCSI array is used in RAID0 way. The storage system is composed of high speed buffer  DMA controller  control MCU  SCSI protocol controller and SCSI hard disk. As for compression subsystem  according to requirement of communication and monitor system  the output is fixed resolution image and analog PAL signal. The compression means is JPEG2000 standard  in which  9/7 wavelets in lifting format is used. 2 DSPs and FPGA are used to compose parallel compression system. The system is composed of FPGA pre-processing module  DSP compression module  video decoder module  data buffer module and communication module. Firstly  discrete wavelet transform and quantization is realized in FPGA. Secondly  entropy coding and stream adaption is realized in DSPs. Last  analog PAL signal is output by Video decoder. Data buffer is realized in synchronous dual-port RAM and state of subsystem is transfer to controller. Through subjective and objective evaluation  the storage and compression system satisfies the requirement of system. 2009 SPIE.  
a perceptual sensitivity based redundant slices coding scheme for error-resilient transmission h.264/avc video 会议论文  OAI收割
4th International Conference on Communications, Circuits and Systems (ICCCAS 2006), Guilin, PEOPLES R CHINA, JUN 25-28,
Xu Jin; Wu Zhimei
  |  收藏  |  浏览/下载：24/0  |  提交时间：2011/07/28
a perceptual sensitivity based redundant slices coding scheme for error-resilient transmission h.264/avc video 会议论文  OAI收割
4th International Conference on Communications, Circuits and Systems (ICCCAS 2006), Guilin, PEOPLES R CHINA, JUN 25-28,
Xu Jin; Wu Zhimei
  |  收藏  |  浏览/下载：13/0  |  提交时间：2011/07/28