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In this paper, a multi scale Gaussian edge detector is constructed. According to transfer properties across scales of the wavelet modules of the signal edge and the noise edge, we combine the properties of edges in different scales and propose a multi scale edge fusion algorithm consisting of edge transfer, edge inherit and edge growth. The edge is an important content of obtaining information of...
Detection of T waves is an important and complicate part in the analysis and interpretation of electrocardiogram (ECG). A detection scheme based on wavelet transform-amplitude-slope is developed in this paper. It employs the wavelet transform modulus maximum pairs to locate the T wave region, and combines with the amplitude and slope compensatory criterion to detect the various T waves, including...
In order to increase accuracy of the linear array CCD edge detection system, a wavelet-based sub-pixel edge detection method is proposed, the basic process is like this: firstly, according to the step gradient features, automatically calculate the pixel-level border of the CCD image. Then use the wavelet transform algorithm to divide the image's edge location in sub-pixel level, thus detecting the...
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