关键词: 信息处理技术, 边缘检测, 小波变换, B样条小波, 多尺度分析, 自适应阈值

Abstract: The cubic Bspline smoothing filter operator to perform multiscale filtering was designed using the characteristics of wavelet transform. The obtained multiscale wavelet transform was combined with adaptive thresholds to extract image edge at different scales. Through using multiscale characteristic of the edge information and synthesizing the multiscale edge, the image edge with only one pixel wide was obtained. Computer simultion results show that this method is superior to the traditional edge detection methods with both precise image edge detection and effective noise restraining.

Key words: information processing technology, edge detection, wavelet transform, Bspline wavelet, multiscale analysis, adaptive threshold