Bar code image correction method based on dynamic template and method for acquiring correction point
A technology of dynamic template and image correction, applied in the field of image correction
Active Publication Date: 2013-07-17
NEWLAND DIGITAL TECH CO LTD
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[0006] In order to solve the problem in the prior art that the iconic graphics of the barcode image need to be searched first in the barcode image correction process, the present invention provides a barcode image correction method and correction point acquisition method based on a dynamic template
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[0034] The invention provides a barcode image sampling method based on multiple barcode images. The barcode image sampling method improves the clarity of the barcode image by fusing pixel information of two or more barcode images. In addition, the barcode image sampling method can further fuse at least two barcode images into a super-resolution target image or a sub-resolution target image.
[0035] Such as Figure 1-2As shown, the present invention provides a barcode image sampling method. In the barcode image sampling method of the present invention, two barcode images A and B are obtained first. The barcode images A and B are preferably obtained by continuously photographing the same barcode within a predetermined time interval, so that the difference between the barcode images A and B is relatively small, thereby ensuring the accuracy of image sampling. After the two barcode images A and B are obtained, the two barcode images A and B are scanned respectively to obtain la...
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The invention discloses a bar code image correction method based on a dynamic template and a method for acquiring a correction point. The method for acquiring the correction point comprises the following steps of: determining module coordinates of modules in a subimage region of a two-dimensional bar code image and the image coordinates of module centers; carrying out binaryzation processing on gray values of the module centers of the modules to obtain the black and white values of the module centers; selecting the module centers of partial modules in the subimage region as a characteristic point to form a dynamic template; moving the dynamic template relative to the two-dimensional bar image to carry out gray value matching to determine the optimum matching position of the dynamic template and the two-dimensional bar image, and determining the correction points according to the optimum matching position. By adopting the method, the correction point for bar code image correction is acquired without searching a mark graph of the bar image, and the possibility of image correction under the condition that the mark graph is stained is provided.
Description
【Technical field】 [0001] The invention relates to an image correction method, in particular to a dynamic template-based barcode image correction method and correction point acquisition method. 【Background technique】 [0002] Barcode technology is an emerging technology that integrates coding, printing, identification, data collection and processing developed on the basis of computer technology and information technology. Barcode technology is widely used in business, library management, warehousing, post and telecommunications, transportation and industrial control due to its advantages of fast, accurate, reliable and low cost, and is bound to play an important role in the emerging "Internet of Things" applications. role. [0003] Currently widely used barcodes include one-dimensional barcodes and two-dimensional barcodes. A one-dimensional barcode, also known as a linear barcode, is composed of multiple "bar" and "space" units arranged in parallel, and the barcode informa...
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IPC IPC(8): G06K9/32G06K7/10
Inventor 邱有森陈文传陈挺立
Owner NEWLAND DIGITAL TECH CO LTD