Warp Knitted Fabric Defect Detection Method Based on Wavelet Contourlet Transform and Visual Saliency
A wavelet profile and warp knitted fabric technology, applied in the field of image processing, can solve the problem of less fabric defect detection, achieve the effects of high practicability, avoid redundancy, and the method is simple and efficient
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[0048] The present invention will be further described below in conjunction with specific drawings.
[0049] The warp knitted fabric defect detection method based on wavelet contourlet transform and visual saliency described in the present invention, such as figure 1 shown, including the following steps:
[0050]Step 1. Select the fundamental wave and construct the wavelet transform filter;
[0051] The two-dimensional discrete wavelet transform is an extension of the one-dimensional discrete wavelet transform, and it can complete its transformation process through two one-dimensional wavelet transforms. In its implementation, a two-dimensional discrete wavelet transform requires a two-dimensional scaling function and three two-dimensional wavelet functions ψ H (x, y), ψ V (x, y) and ψ D (x, y). These functions are also generalized applications of one-dimensional functions, and can be expressed as the product of two one-dimensional functions in principle. Its expressio...
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