Image rectangle detection method and device, and storage medium
A rectangle detection and image technology, applied in the field of information processing, can solve problems such as lack of real-time performance and complicated calculation process
Active Publication Date: 2019-01-11
TENCENT TECH (SHENZHEN) CO LTD
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This method will not have the above-mentioned limitations, but the calculation process of this method is more complicated and cannot be real-time
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[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0032] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, but not necessarily Describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present invention described herein can, for...
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The embodiment of the invention discloses an image rectangle detection method and device and a storage medium, which are applied to the technical field of information processing. The rectangle detecting device of the image detects the information of n straight lines contained in the image to be detected, and then groups the n straight lines to obtain a plurality of straight line groups, so that approximately parallel straight lines are divided into one straight line group. Furthermore, a plurality of vertical groups are obtained by grouping a plurality of straight groups, so that approximatelyvertical straight lines fall into one vertical group; the information of multiple rectangles can be obtained according to the information of straight lines in each vertical group and the informationof at least one rectangle can be selected as the information of the rectangle in the image to be detected. As long as the included angle between the straight lines in the rectangle accords with the included angle characteristic of the rectangle, the angle of the rectangle in the rectangle can be detected without restriction even if the angle of the rectangle in the image to be detected is obscured, incomplete or deformed greatly; the calculation process is relatively simple and can be widely used in user terminals for real-time rectangular detection.
Description
Technical field [0001] The present invention relates to the field of information processing technology, and in particular to a method, device and storage medium for detecting a rectangle of an image. Background technique [0002] Nowadays, many scenes need to detect the rectangle in the image. For example, in the identification of ID card or bank card, the rectangle detection of the image is required to facilitate the identification of the information in the detected rectangle. . [0003] An existing image rectangle detection method includes: extracting the vertical corner points in the image, combining these vertical corner points, and combining voting, pixel domain information, etc. to determine whether the combined graphic is a rectangle contained in the image In this way, rectangle detection is realized. However, this detection method has certain limitations. For example, when the corners of the rectangle of the image are blocked, incomplete, or deformed too much, the rectangl...
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IPC IPC(8): G06K9/32
CPCG06V10/245
Inventor 李鑫
Owner TENCENT TECH (SHENZHEN) CO LTD