Folded two-dimensional code image restoration method and device, and computer readable storage medium
A technology of two-dimensional code and binary image, applied in the field of image processing
Active Publication Date: 2020-09-18
图方图像科技(深圳)有限公司
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[0005] The main purpose of the present invention is to provide a method, device and computer-readable storage medium for restoring a folded two-dimensional code image, aiming at solving the existing technical problem of how to restore a folded two-dimensional code image
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[0061] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0062] The present invention provides a method for restoring a folded two-dimensional code image, referring to figure 1 , figure 1 It is a schematic flowchart of the first embodiment of the method for restoring a folded two-dimensional code image according to the present invention.
[0063] The embodiment of the present invention provides an embodiment of a method for restoring a folded two-dimensional code image. It should be noted that although the logical order is shown in the flow chart, in some cases, it may be executed in a different order than here steps shown or described.
[0064] The restoration method of folding two-dimensional code image is applied in server or terminal, and terminal can comprise such as mobile terminal such as mobile phone, panel computer, notebook computer, palmtop computer, personal d...
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The invention discloses a folded two-dimensional code image restoration method and device, and a computer readable storage medium, and the method comprises the steps: carrying out the preprocessing ofa folded two-dimensional code image after the folded two-dimensional code image is obtained, and obtaining a preprocessed folded two-dimensional code image; carrying out corner point detection on thepreprocessed folded two-dimensional code image to obtain corner points in the preprocessed folded two-dimensional code image; performing perspective restoration processing on the first image and thesecond image corresponding to the preprocessed folded two-dimensional code image according to the corner points to obtain a processed first image and a processed second image; and splicing the processed first image and the processed second image to obtain a planar two-dimensional code image corresponding to the folded two-dimensional code image. According to the invention, the folded two-dimensional code image is divided into two parts for perspective restoration, and then the two parts are spliced into the corresponding planar two-dimensional code image, so that the folded two-dimensional code image is restored.
Description
technical field [0001] The present invention relates to the technical field of image processing, in particular to a method, device and computer-readable storage medium for restoring a folded two-dimensional code image. Background technique [0002] Image QR codes have been widely used in various fields, where the image of the QR code used to carry information is usually square and often displayed on a plane (such as a label pasted on a commodity packaging box). When shooting a two-dimensional code image, because the lens and sensor of the camera are usually not parallel to the plane two-dimensional code, it usually causes different degrees of perspective distortion. Perspective distortion will cause the ingested QR code image to be different from the original QR code image in shape, size and position, and before perspective restoration, the information carried by the QR code image cannot be extracted, so perspective restoration It is a necessary part of the image QR code ap...
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IPC IPC(8): G06T3/00G06T3/40G06T5/00G06T5/30G06T7/11G06T7/136G06T7/62G06T7/90
CPCG06T7/11G06T7/136G06T5/30G06T7/62G06T7/90G06T3/4038G06T2200/32G06T3/073G06T5/80
Inventor 胡兆旭郭玮强周建新
Owner 图方图像科技(深圳)有限公司