Bill content identification method and device, medium and electronic equipment
A technology for content recognition and bills, applied in character and pattern recognition, image data processing, instruments, etc., to solve problems such as low recognition accuracy, inability to accurately and effectively extract information, and distortion of bill pictures.
Active Publication Date: 2020-11-13
ONE CONNECT SMART TECH CO LTD SHENZHEN
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Problems solved by technology
However, due to the existence of factors such as light, shooting angle, and the movement of the shooting target, the photographed bill pictures are often distorted. At this time, only traditional OCR recognition technology cannot efficiently complete the recognition of these bill pictures, and there is a recognition accuracy rate. Problems that are not high enough to extract information accurately and effectively
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[0038] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.
[0039] Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus repeated descriptions thereof will be omitted. Some of the block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logic...
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The invention relates to the field of artificial intelligence, and discloses a bill content identification method and device, a medium and electronic equipment. The method comprises the steps of obtaining a reference bill picture; determining position information of each reference feature field area and recorded reference feature fields; obtaining a to-be-identified bill picture consistent with the format of the reference bill picture; obtaining a plurality of feature fields in the to-be-identified picture and position information of each feature field; calculating a perspective transformationmatrix based on the position information of each reference feature field region and the position information of each target feature field; zooming the to-be-identified picture to enable the size of the zoomed to-be-identified picture to be consistent with the size of the reference bill picture; performing perspective transformation on the zoomed to-be-identified picture by utilizing the perspective transformation matrix; and according to the position of the content selection area in the reference bill picture, identifying the area corresponding to the corresponding position in the transformedto-be-identified picture. According to the method, the bill content can be accurately and effectively identified.
Description
technical field [0001] The present disclosure relates to the technical field of artificial intelligence and image recognition, and in particular to a bill content recognition method, device, medium and electronic equipment. Background technique [0002] NSTR (natural scene text recognition, nature scene text recognition) is an OCR recognition (optical character recognition technology, optical character recognition) in a special scene. OCR recognition in general scenarios is the recognition of scanned pictures of specific documents. The format, background, size, color, and light of these scanned pictures usually have certain stability, and can be easily and accurately identified; currently , There are more and more recognition needs in the NSTR scene. Using tools such as digital cameras and mobile phones to take pictures with text at will, the recognition of the content in such pictures belongs to the recognition in the NSTR scene. Recognition of bill content in the NSTR sce...
Claims
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Patent Timeline
Login to View More IPC IPC(8): G06K9/32G06K9/42G06T3/40
CPCG06T3/4084G06V10/25G06V20/62G06V10/32
Inventor 吴贞海
Owner ONE CONNECT SMART TECH CO LTD SHENZHEN