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PPT Image Segmentation Based on Color Entropy 会议论文
作者:  He, Feijuan;  Chen, Xuelu;  Xu, Dawei;  Miao, Xianglin
收藏  |  浏览/下载：5/0  |  提交时间：2019/12/02
Performance evaluation of image enhancement methods for object detection and recognition 会议论文
Conference on Applied Optics and Photonics (AOPC) - Image Processing and Analysis, Beijing, MAY 05-07, 2015
作者:  Cai TF(蔡铁峰);  Zhu F(朱枫);  Hao YM(郝颖明);  Fan XP(范晓鹏)
收藏  |  浏览/下载：11/0  |  提交时间：2015/11/18
Image coding using wavelet-based compressive sampling (EI CONFERENCE) 会议论文
2012 5th International Symposium on Computational Intelligence and Design, ISCID 2012, October 28, 2012 - October 29, 2012, Hangzhou, China
Jin L.; Li J.
收藏  |  浏览/下载：36/0  |  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.  
Spatial Parameter Choosing Method Based on Spatial Perception Entropy Judgement 会议论文
作者:  Cao Sheng;  Hu Ruimin;  Peng Yuxing
收藏  |  浏览/下载：2/0  |  提交时间：2019/12/05
H.264编码器在Intel PXA27x嵌入式平台上的实现 会议论文
第一届建立和谐人机环境联合学术会议（HHME2005）论文集, 第一届建立和谐人机环境联合学术会议（HHME2005）, 中国昆明, CNKI, 中国计算机学会、中国图象图形学学会、ACM SIGCHI中国分会、清华大学计算机科学与技术系
范嘉略; 陈玉; 张旭东; Jialue Fan; Yu Chen; Xudong Zhang
收藏  |  浏览/下载：3/0
Improved Rice Algorithm of Lossless Compression for On-Board Images 会议论文
2010 International Conference on Multimedia Technology (ICMT), Ningbo, China, October 29-31, 2010
作者:  Wei YW(魏永旺);  Ding QH(丁庆海);  Luo HB(罗海波)
收藏  |  浏览/下载：24/0  |  提交时间：2012/06/06
A new image pre-processing for improved performance of entropy coding 会议论文
作者:  Zheng, Yuying;  Qi, Chun;  Wang, Guanzhen
收藏  |  浏览/下载：2/0  |  提交时间：2019/12/18
Storage and compression design of high speed CCD (EI CONFERENCE) 会议论文
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：46/0  |  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.  
Distributed Turbo Product Codes with Multiple Vertical Parities 会议论文
作者:  Obiedat, Esam A.;  Chen, Guotai;  Cao, Lei
收藏  |  浏览/下载：3/0  |  提交时间：2019/11/26
entropy codec based on evolutionary mht and its application in video encryption 会议论文
11th ACM Multimedia and Security Workshop, Princeton, NJ, SEP 07-08,
Cao Yun; Zhao Xianfeng; Feng Dengguo
收藏  |  浏览/下载：12/0  |  提交时间：2011/03/20

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