SIFT Feature Extraction Algorithm for Image in DCT Domain

摘要：

　　Image feature extraction is an important technology in image matching and retrieval.For the problem of high computational complexity of spatial domain image feature extraction using the SIFT algorithm,and by studying the relationship between DCT coefficient matrix and image,the paper designed the DCT coefficients reduced matrix of image and proposed the algorithm of SIFT feature extraction in DCT domain reduced image.Experiments showed that with the low loss of accuracy in image matching and retrieval,the method proposed can significantly improve the computational efficiency of feature extraction.

关键词： Image feature extraction DCT coefficients reduced matrix DCT domain reduced image SIFT algorithm

作者: Wu Zhen Xu Zhe Zhang Rui-nian Li Shao-Mei

作者单位: National Computer Network and Information Security Administration Center, Beijing 100029, China National Digital switching System Engineering & Technological R&D Center, Zhengzhou 450002, China

会议类型: 国际会议

会议名称: 2013 2nd International Symposium on Computer,Communication,Control and Automation(ISCCCA-13)(2013年第二届计算机、通信与自动化国际会议)

会议地点: 太原

会议语种:英文

页码: 261-264

在线出版日期: 2013-04-06（万方平台首次上网日期，不代表论文的发表时间）