机构

• 计算技术研究所 [4]
• 长春光学精密机械与物... [2]
• 软件研究所 [1]

采集方式

• OAI收割 [7]

内容类型

• 期刊论文 [4]
• 会议论文 [3]

发表日期

• 2012 [1]
• 2009 [3]
• 2008 [1]
• 2006 [2]

学科主题

筛选

浏览/检索结果: 共7条，第1-7条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Image coding using wavelet-based compressive sampling (EI CONFERENCE) 会议论文  OAI收割 2012 5th International Symposium on Computational Intelligence and Design, ISCID 2012, October 28, 2012 - October 29, 2012, Hangzhou, China 作者:  Li J.;  Li J.;  Li J. 收藏  |  浏览/下载：43/0  |  提交时间：2013/03/25 In this paper  we proposed a novel coding scheme is proposed using wavelet-based CS framework for nature image. First  two-dimension discrete wavelet transform (DWT) is applied to a nature image for sparse representation. After multi-scale DWT  the low-frequency sub-band and high-frequency sub-bands are re-sampled separately. According to the statistical dependences among DWT coefficients  we allocate different measurements to low- and high-frequency component. Then  the measurements samples can be quantized. The quantize samples are entropy coded and forward correct coding (FEC). Finally  the compressed streams are transmitted. At the decoder  one can simply reconstruct the image via l1 minimization. Experimental results show that the proposed wavelet-based CS scheme achieves better compression performance against the relevant existing solutions.   Context-based entropy coding in AVS video coding standard 期刊论文  OAI收割 SIGNAL PROCESSING-IMAGE COMMUNICATION, 2009, 卷号: 24, 期号: 4, 页码: 263-276 作者:  Zhang, Li;  Wang, Qiang;  Zhang, Ning;  Zhao, Debin;  Wu, Xiaolin   |  收藏  |  浏览/下载：20/0  |  提交时间：2019/12/16 AVS  DCT video coding  Entropy coding  Context modeling  Variable length coding  Arithmetic coding   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.   entropy codec based on evolutionary mht and its application in video encryption 会议论文  OAI收割 11th ACM Multimedia and Security Workshop, Princeton, NJ, SEP 07-08, Cao Yun; Zhao Xianfeng; Feng Dengguo   |  收藏  |  浏览/下载：15/0  |  提交时间：2011/03/20 Multimedia  encryption  entropy codec  Huffman coding   Hardware architecture for AVS entropy encoder 期刊论文  OAI收割 IEEE TRANSACTIONS ON CONSUMER ELECTRONICS, 2008, 卷号: 54, 期号: 2, 页码: 769-777 作者:  Xu, Long;  Deng, Lei;  Ji, Xiangyang;  Peng, Xiaoming;  Gao, Wen   |  收藏  |  浏览/下载：13/0  |  提交时间：2019/12/16 AVS-P2  entropy coding  VLC  context-based  hardware  pipeline   Context-based 2D-VLC entropy coder in AVS video coding standard 期刊论文  OAI收割 JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY, 2006, 卷号: 21, 期号: 3, 页码: 315-322 作者:  Wang, Q;  Zhao, DB;  Gao, W   |  收藏  |  浏览/下载：24/0  |  提交时间：2019/12/16 entropy coder  context-based  video coding  VLC   Context-Based 2D-VLC Entropy Coder in AVS Video Coding Standard 期刊论文  OAI收割 Journal of Computer Science and Technology, 2006, 卷号: 21, 期号: 3, 页码: 315-322 作者:  Qiang Wang(王强);  Wen Gao（高文）;  De-Bin Zhao（赵德斌）   |  收藏  |  浏览/下载：22/0  |  提交时间：2010/11/04 Entropy Coder  Context-based  Video Coding  Vlc