Image information extraction method and system for text direction clustering correction
A technology of image information and extraction method, which is applied in the field of image processing, can solve problems such as inability to perform simultaneous text correction, and achieve an effect that is conducive to text recognition
Pending Publication Date: 2021-12-31
GUANGDONG KAMFU TECH CO LTD
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When encountering other rotation angles, or when the rotation angles of multiple pieces of text data are inconsistent, the existing method cannot perform simultaneous text correction
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[0019] In order to make the purpose, technical solution and advantages of the present application clearer, the specific implementation method of the present invention will be further described below in conjunction with the accompanying drawings.
[0020] The technical solutions in the embodiments of the present invention will be fully described below, obviously, the described embodiments are only some of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0021] The present invention provides an image information extraction method for text direction clustering correction, such as figure 1 Shown is a flowchart of the present invention, according to some embodiments, S10, receive an image, use a text detection algorithm DB to find text information ...
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The invention discloses an image information extraction method and system for text direction clustering correction, and the method comprises the steps: receiving an image, finding text information in the image through a text detection algorithm DB, and forming a bounding box around the text information; taking a normal vector at the long side of the bounding box, clustering the bounding box according to the direction of the normal vector, and giving the direction of the normal vector of each type of bounding box; detecting a first included angle between the normal vector of each type of bounding box and the vertical direction, and when the first included angle is larger than a first preset value, rotating the corresponding type of bounding box according to the first included angle; recognizing the text direction in the bounding box, and if the text direction is inverted, rotating the image by 180 degrees; recognizing and extracting the text information in the bounding box, and correcting the text information with wrong recognition. The texts with the normal vector angles in the same range are clustered, each class is uniformly rotated and corrected, character recognition is facilitated after the texts are corrected, and the problem that the texts in multiple directions cannot be corrected at the same time in a traditional image correction mode is solved.
Description
technical field [0001] The invention relates to the technical field of image processing, in particular to an image information extraction method and system for text orientation clustering correction. Background technique [0002] Characteristic information such as the relative position and inclination angle of the text in the image will affect the accuracy of text recognition, so it is necessary to modify the obtained text to perform text recognition. Existing correction methods only consider the case that all texts have the same rotation angle. This situation is relatively common in government affairs materials. For example, document images or scanned documents may be deformed, rotated, etc. in the image due to shooting angles or placement methods. A rotation (broadly called an affine transformation) is performed to fit the text recognition model. When other rotation angles are encountered, or the rotation angles of multiple pieces of text data are inconsistent, the exist...
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IPC IPC(8): G06K9/32G06K9/34G06K9/62
CPCG06F18/23
Inventor 朱佳豪路橙梁沛森陈锦锋陈武聪钟建琛李文浩邓耀隆
Owner GUANGDONG KAMFU TECH CO LTD