SIFT Feature Extraction Algorithm for Image in DCT Domain

Zhen Wu, Zhe Xu, Rui-nian Zhang, Shao-Mei Li
2013 Proceedings of the 2nd International Symposium on Computer, Communication, Control and Automation   unpublished
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
more » ... n image matching and retrieval, the method proposed can significantly improve the computational efficiency of feature extraction.
doi:10.2991/isccca.2013.64 fatcat:u4ked4qid5gw5otlopd2znp3yy