机构

• 长春光学精密机械与物... [2]
• 地理科学与资源研究所 [1]

采集方式

• OAI收割 [3]

内容类型

• 会议论文 [2]
• SCI/SSCI论文 [1]

发表日期

• 2015 [1]
• 2012 [1]
• 2010 [1]

学科主题

筛选

浏览/检索结果: 共3条，第1-3条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序作者升序作者降序 Poor vision among China's rural primary school students: Prevalence, correlates and consequences SCI/SSCI论文  OAI收割 2015 作者:  Yi H. M.;  Zhang, L. X.;  Ma, X. C.;  Congdon, N.;  Shi, Y. J. 收藏  |  浏览/下载：22/0  |  提交时间：2015/12/09 Rural China  Poor vision  Children  Academic performance  Mental health  uncorrected refractive error  quality-of-life  visual impairment  southern china  merger program  aged children  eye diseases  risk-factors  unmet need  myopia   Image matching combine SIFT with regional SSDA (EI CONFERENCE) 会议论文  OAI收割 2012 International Conference on Control Engineering and Communication Technology, ICCECT 2012, December 7, 2012 - December 9, 2012, Shenyang, Liaoning, China 作者:  Liu J.;  Liu J.;  Liu J.;  Zhao J. 收藏  |  浏览/下载：46/0  |  提交时间：2013/03/25 Image matching is at the base of many computer vision problems  such as object recognition or image stitching. Standard SIFT provides poor performance when images under viewpoint change conditions and with similar corners. Hence  we propose a matching algorithm combine regional SSDA with simplified SIFT algorithm. We demonstrate through experiments that our algorithm yields better performance in images of viewpoint change and similar feature points. Besides  the simplified algorithm cut down about half the time was originally needed in our tested images. 2012 IEEE.   Real-time defogging processing of aerial images (EI CONFERENCE) 会议论文  OAI收割 2010 6th International Conference on Wireless Communications, Networking and Mobile Computing, WiCOM 2010, September 23, 2010 - September 25, 2010, Chengdu, China 作者:  Liu G. 收藏  |  浏览/下载：42/0  |  提交时间：2013/03/25 A real-time image defogging processing method based on FPGA is proposed to increase low-contrast of the aerial images in foggy vision conditions. According to the high similarity of the contiguous frame histogram in video image  the histogram equalization algorithm is improved to enhance the image contrast. The median filter algorithm is used to eliminate the noise of the image. The experimental results demonstrate that the method can efficiently enhance the contrast  strengthen the detail and clarify definition for the fog-degraded aerial images. The visibility limit of the images has been increased to a time above. Simultaneously the method satisfies the real-time processing requirement of aerial video images  which has direct applications to the problem of poor visibility conditions. 2010 IEEE.