A method for judging the recovery effect of text and image writing track
A technology of writing trajectory and discrimination method, which is applied in the field of text image recognition, can solve the problems of deviation of discrimination results, inability to accurately reflect the fidelity of fonts, and non-robustness of character strokes, etc., and achieve the effect of eliminating influence
Active Publication Date: 2022-07-12
SOUTH CHINA UNIV OF TECH +1
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[0004] In view of this, the purpose of the present invention is to provide a method for discriminating the restoration effect of writing traces of text images, so as to solve the problems in the prior art when discriminating the restoration of writing traces of text images, which cannot accurately reflect font fidelity due to image background interference. degree, and the existing technology is not robust to character strokes, which leads to the problem of discriminative results deviation
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[0020] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. . Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0021] figure 1 A schematic flowchart of an embodiment of the present invention is shown. A method for judging the recovery effect of a writing track of a text image, comprising the following steps:
[0022] Step 1, on the original text image Perform masking opera...
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The invention discloses a method for judging the recovery effect of a writing track of a text image, which comprises the following steps: performing a masking operation on an original text image and performing a binarization process to obtain an input image mask; rendering the recovery track to obtain the recovery track mask; and recovering the track mask The membrane performs multiple expansion operations step by step to obtain multiple expansion masks; the intersection ratio calculation method is used to calculate the IoU score of the recovered trajectory mask and multiple expansion masks and the input image mask respectively; the IoU with the largest calculated value is calculated. The score is taken as the DloU score, which is the final discrimination result. The method of the invention designs an intersection ratio calculation method, calculates the similarity between the input image mask and the recovery trajectory mask, designs a dynamic expansion mechanism, and calculates the intersection ratio score with the recovery trajectory mask and the expansion mask and the input image mask respectively, Use dynamic intersection and ratio score to eliminate the influence of input text image stroke width on the evaluation of glyph fidelity.
Description
technical field [0001] The invention relates to the technical field of text image recognition, in particular to a method for judging the recovery effect of a writing track of a text image. Background technique [0002] Text data can be roughly divided into image modal data and writing trajectory modal data according to the modal type, and the text generation technology is mainly developed around these two modal forms. Text images are often obtained by image acquisition devices such as scanners or cameras, and are stored in the form of dot matrix images. This data can visually display the shape of text and is often used for text display and reading. The writing trajectory of text is collected by interactive devices such as digital pen, tablet or touch screen that can record the trajectory. It is usually stored in the form of pen point coordinate point trajectory sequence, and may also record auxiliary information such as pen pressure and speed during the writing process. . ...
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IPC IPC(8): G06V30/32G06V30/19G06T7/00G06K9/62
CPCG06T7/0002G06T2207/30168G06F18/22
Inventor 黄双萍陈洲楠杨代辉梁景麟彭政华
Owner SOUTH CHINA UNIV OF TECH