Fault-tolerant positioning system and fault-tolerant positioning method

Abstract

The invention provides a fault tolerance locating system. The fault tolerance locating system comprises an acquisition unit for acquiring an entire original image of gradient and / or gray scale, an image setting unit for setting the search region of the entire original image according to a received setting command, a search unit for searching for a characteristic region image comprising a plurality of characters from the search region, a segmentation unit for determining the segmentation region of each character according to the practical projection of the practical position and the preset projection of the preset position of each of the characters, a comparison unit for comparing the segmentation region of each character with a preset region in order to determine the numerical value of the region variation of each character, and a processing unit for comparing the numerical value of the region variation of each character with a preset region variation value, and determining the final region of each character according to a comparison result to detect a final region. Correspondingly, a fault tolerance locating method is further provided. By adopting the technical scheme, the locating fault tolerance capacity and locating accuracy can be increased.

Description

technical field [0001] The invention relates to the technical field of detection, in particular to a fault-tolerant positioning system and a fault-tolerant positioning method. Background technique [0002] Existing inspection systems usually use horizontal and vertical projection methods for positioning, which can achieve accurate positioning of standard products. However, when encountering special circumstances such as defective products (such as part of the number missing, sticking, etc.), or the pattern in the positioning area is not unique (such as the change of the initial letter A to Z of the number), the positioning deviation will occur. It further affects the detection pass rate of the system (most of the defects that cause positioning deviation do not meet the requirements for waste products) and causes downtime and manual processing affects detection efficiency (forced shutdown and manual processing when positioning causes number recognition errors). [0003] Ther...

AI Technical Summary

Problems solved by technology

However, when encountering special circumstances such as defective products (such as part of the number missing, sticking, etc.), or the pattern in the positioning area is not unique (such as the change of the initial letter A to Z of the number), the positioning deviation will occur. Further affect the detection pass rate of the system (most of the defects that cause positioning deviation do not meet the requirements of waste products) and cause downtime and manual processing affect detection efficiency (forced shutdown and manual processing when positioning causes number recognition errors)

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