Abstract:Fabric weft angle detection is a key technology link in fabric weft rectification. How to detect the weft angle quickly and accurately is of great importance to improve the quality of the weft rectification. In view of the shortcomings of the existing fabric image rectification methods, which are slow and not high accuracy, a fast detection method of fabric weft angle image based on Hough transform principle and fast Fourier transform multi-projection is proposed.The fabric image of the Sobel is convoluted to get the edge pattern by using the Sobel edge direction detection operator, the weft direction information is extracted, the weft skeleton is obtained by using the morphological filter, and the weft area is further simplified to reduce the amount of calculation.The Hough transformation and FFT multi-projection analysis are used to get the weft-skew angle of the fabric image. The experimental results show that for different types of fabric images, the detection time of the algorithm is less than 0.55s, and the error value is less than 0.2 degree, which can take into account both the detection accuracy and the detection speed, and meet the practical application requirements of engineering.
