A method and system for precise image processing in the process of chemical fiber paper tube appearance inspection
A chemical fiber paper tube, appearance inspection technology, applied in the direction of optical testing flaws/defects, etc., can solve the problems of large amount of calculation, low accuracy, sensitivity to geometric distortion, etc. Distortion effect
Active Publication Date: 2017-08-25
龚厚志 +1
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[0010] In view of the above problems, the task of the present invention is to provide a method and system for accurate image processing in the process of chemical fiber paper tube appearance inspection, to solve the traditional image processing, the ubiquitous shortcomings of a large amount of calculation during splicing, and the calculation results are not sensitive to light The change of the lens and the geometric distortion caused by the lens are relatively sensitive, and it is easy to cause inaccurate stitching results, low precision, and unsatisfactory image stitching effects, etc.
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[0057] Such as figure 1 As shown, in the method of the present invention, the auxiliary marks on the auxiliary markers are composed of m grids in the vertical direction, wherein each grid has two representation methods of "black" and "white", and the corresponding binary values are "1" and "0". The binary value corresponding to the auxiliary flag is called the coded value of the auxiliary flag.
[0058] Such as figure 2 As shown, the positions of different regions of its cylinder can be determined. If the paper tube 20 end face diameter is D, the circumference is L, there is L=D*π; If the width of the auxiliary sign of the auxiliary marker 50 is w, n is the number of auxiliary signs, so that w*n=L=D *π. The n auxiliary marks correspond to the circumference of the end face of the paper tube 20, that is, the circumference of the end face is evenly divided into n parts, and each auxiliary mark corresponds to one of them, and also corresponds to the corresponding position o...
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The invention discloses an image accurate processing method for chemical fiber paper tube appearance detection. The method comprises the following steps: arranging an auxiliary mark on a chemical fiber paper tube to be detected to position an end cylindrical surface circumference of the chemical fiber paper tube to be detected; collecting the image signal of the cylindrical surface image of the chemical fiber paper tube to be detected with a detection camera; conducting training remediation on a triggering signal with a PC machine, so as to form a collection control signal; during image splicing, determining the boundaries of two adjacent images, and removing overlapped parts to realize accurate splicing of the images; finally, conducting panoramic view splicing on the signals of cylindrical surface images of different codes. The method has the advantages that not only are problems such as geometric distortion, poor precision and undesirable image splicing effect of the conventional image processing method solved, but also cylindrical surface panoramic images in different areas can be spliced accurately, thereby having the characteristics of high image processing precision, low calculation quantity, high anti-interference capability, high implementation possibility and the like.
Description
technical field [0001] The present invention relates to the intelligent image processing technology used in the detection technology of industrial products, and more specifically refers to an image precision processing method and system used in the chemical fiber paper tube appearance detection process used in the chemical fiber paper tube appearance detection process. Background technique [0002] Chemical fiber paper tubes are mainly used in the textile industry to provide basic guarantee for high-speed winding or elastic spindles. Its appearance geometry, roundness, concentricity and whether the appearance is flawed are very important parameters when the paper tube acts as an intermediate medium. At present, paper tube manufacturers generally use manual inspection to ensure that the appearance of the output paper tube meets the quality Require. However, manual detection methods have the following disadvantages: [0003] 1. Due to the inconsistency of subjective judgment...
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IPC IPC(8): G01N21/88
Inventor 龚厚志王宏松储开华
Owner 龚厚志