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浏览/检索结果: 共17条，第1-10条 帮助

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Parameters for evaluating the efficiency of inlet compression 期刊论文  OAI收割
CHINESE JOURNAL OF AERONAUTICS, 2021, 卷号: 34, 期号: 12, 页码: 51-56
作者:  Chen, Keting;  Yue, Lianjie;  Zhang, Xinyu;  Yue LJ(岳连捷);  Zhang XY(张新宇)
  |  收藏  |  浏览/下载：53/0  |  提交时间：2022/01/12
Evaluation of compression quality of space-borne interference hyperspectral image 会议论文  OAI收割
Kunming, China, 2020-11-05
作者:  Zhang, Xiaorong;  Li, Siyuan;  Hu, Bingliang;  Liu, Xuebin;  Yan, Qiangqiang
  |  收藏  |  浏览/下载：52/0  |  提交时间：2021/04/12
Orthogonal sparse fractal coding algorithm based on image texture feature 期刊论文  OAI收割
IET IMAGE PROCESSING, 2019, 卷号: 13, 期号: 11, 页码: 1872-1879
作者:  Cao, Jian;  Zhang, Aihua;  Shi, Lei
  |  收藏  |  浏览/下载：224/0  |  提交时间：2019/10/11
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
Efficient rate control technique for CCSDS image encoding (EI CONFERENCE) 会议论文  OAI收割
IEEE 2nd International Conference on Computing, Control and Industrial Engineering, CCIE 2011, August 20, 2011 - August 21, 2011, Wuhan, China
Jin L.
收藏  |  浏览/下载：95/0  |  提交时间：2013/03/25
For the limitation of data transmission bandwidth and real time transmission demand  generally image compression is required to implement the precise and flexible rate control algorithm. Rate control is an important issue in the image compression field. This paper considers the problem of rate allocation to each encoded segment for CCSDS image compression. One straightforward method is to allocate an equal amount of rate to each segment based on the average of the total number of compressed bytes. The obvious drawback of this method is that different segment will be reconstructed to different quality  so the overall quality of the reconstructed image will not be optimized. For the shortage of the original rate control method  as to improve the overall quality of the reconstructed image  an improved rate control algorithm is proposed for CCSDS image encoding. The key component of the proposed rate control method is the appropriate rate allocation. Experiments on the test images show that the PSNR can be increased at about 0.3dB on average  compared to the original algorithm. Therefore  experimental results confirm the effectiveness of the proposed algorithm in terms of objective evaluation  and the rate-distortion performance of the reconstructed image is improved. 2011 IEEE.  
A simple and efficient algorithm to estimate daily global solar radiation from geostationary satellite data SCI/SSCI论文  OAI收割
2011
Lu N.; Qin J.; Yang K.; Sun J. L.
收藏  |  浏览/下载：49/0  |  提交时间：2012/06/08
No-reference perceptual image quality metric using gradient profiles for jpeg2000 期刊论文  iSwitch采集
Signal processing-image communication, 2010, 卷号: 25, 期号: 7, 页码: 502-516
作者:  Liang, Luhong;  Wang, Shiqi;  Chen, Jianhua;  Ma, Siwei;  Zhao, Debin
收藏  |  浏览/下载：42/0  |  提交时间：2019/05/10
No-reference perceptual image quality metric using gradient profiles for JPEG2000 期刊论文  OAI收割
SIGNAL PROCESSING-IMAGE COMMUNICATION, 2010, 卷号: 25, 期号: 7, 页码: 502-516
作者:  Liang, Luhong;  Wang, Shiqi;  Chen, Jianhua;  Ma, Siwei;  Zhao, Debin
  |  收藏  |  浏览/下载：46/0  |  提交时间：2019/12/16
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：56/0  |  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.  
Design of multispectral remote sensing image compression system (EI CONFERENCE) 会议论文  OAI收割
2010 International Conference on Computer Application and System Modeling, ICCASM 2010, October 22, 2010 - October 24, 2010, Shanxi, Taiyuan, China
作者:  Xu S.-Y.
收藏  |  浏览/下载：20/0  |  提交时间：2013/03/25
In order to get the higher compression quality of multispectral remote sensing image  which taken the JPEG2000 as the standard  used FPGA and special compression chip ADV212 to realize the remote sensing image compression system is proposed. The system used the specialty compression chip ADV212 which is newly relaesed by Analog Device company. It used to develop fast high-quality compression for the large amount of remote sensing image data. The system realized the image data's input  the compression stream's output  the image preprocessing as well as to control the ADV212 chip's working pattern through FPGA. The experiment result shows that this system which has such characteristics as low power consumption. low cost and easy adjustmen and has a good compressing effect. Meet the requirement of the multispectral remote sensing image's high compression ratio. 2010 IEEE.