Method and device used for processing paper currency image
A banknote image and image technology, applied in the field of banknote processing
Active Publication Date: 2017-03-15
SHENZHEN YIHUA COMP +2
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[0005] The purpose of the embodiments of the present invention is to provide a method and device for processing banknote images, aiming to solve the problem of how to rotate the boundaries of banknote images
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[0055] The embodiments of the present invention will be further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the embodiments of the present invention, rather than to limit the embodiments of the present invention. In addition, it should be noted that, for the convenience of description, the drawings only show some but not all structures related to the embodiments of the present invention.
[0056] refer to figure 1 , figure 1 It is a schematic flowchart of a method for processing banknote images provided by an embodiment of the present invention.
[0057] Such as figure 1 As shown, the method for processing banknote images includes:
[0058] Step 101, obtaining the image boundary of the banknote to be recognized, and obtaining the straight line information of the image border according to a preset straight line fitting algorithm;
[0059] Step 102, ...
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The invention discloses a method and a device used for processing a paper currency image. The method comprises steps that an image boundary of the to-be-identified paper currency is acquired, and the straight line information of the image boundary is acquired according to a preset straight line fitting algorithm; four intersection point coordinates are acquired according to the straight line information, and height and width of the to-be-identified paper currency are acquired according to the four intersection point coordinates; an initial coordinate point of the image after rotation is defined, row offset, column offset and transverse axis offset after deviation are calculated according to a preset offset algorithm; an initial coordinate point after processing the to-be-identified paper currency image is determined according to the transverse axis offset and the initial coordinate point; a target coordinate point after processing the to-be-identified paper currency image is determined according to the row offset, the column offset and the initial coordinate point after processing. The method is advantaged in that rotation, correction and geometric processing on the original image is realized, later discrimination algorithm development is convenient, and rotation in a row and column deviation mode can reduce the time complexity required for rotation processing.
Description
technical field [0001] The embodiments of the present invention relate to the technical field of banknote processing, in particular to a method and device for processing banknote images. Background technique [0002] Currency is the medium of commodity exchange and the companion of human economic development and trade process. Paper money occupies an important position in the long history of currency. With the circulation and development of various forms of currency, even today when electronic money begins to rise, cash circulation of paper money is still the most important way of currency circulation in the international financial circle. At present, people often use methods such as magnetic ink detection, ultraviolet fluorescence detection and infrared penetration detection to identify the authenticity of banknotes, and identify the face value by detecting the size of banknotes. These methods obtain single information and cannot identify incomplete, polluted and worn bankn...
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Login to View More IPC IPC(8): G07D7/20G07D7/162
CPCG07D7/162G07D7/2008
Inventor 曹婧蕾
Owner SHENZHEN YIHUA COMP