Image processing method based on near-infrared imaging and terminal

A near-infrared imaging and image processing technology, which is applied in the field of image processing, can solve the problems of ignoring blood vessel depth information, poor quality of blood vessel extraction, and excessive noise at the edge of blood vessels, so as to achieve good human eye recognition, good extraction quality, and retain relative depth information Effect
CN110956596APending Publication Date: 2020-04-03SHENZHEN YUANHUA MEDICAL EQUIP TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHENZHEN YUANHUA MEDICAL EQUIP TECH CO LTD
Publication Date
2020-04-03

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Abstract

The invention discloses an image processing method based on near-infrared imaging and a terminal. The image processing method comprises the steps: respectively obtaining convolution kernels in different directions, the dimension of each convolution kernel being n, and the number of directions being m; obtaining an interested matrix from the original grayscale image in a traversal mode, wherein thedimension of the interested matrix is n; performing convolution operation on the interested matrix and convolution kernels in different directions to obtain m new element matrixes; taking the maximumvalue of the new element values with the same coordinates in the m new element matrixes to obtain a preprocessed image matrix; and performing color assignment on the preprocessed image matrix to obtain a final image. The image processing method performs convolution operation on the original grayscale image and a convolution kernel to obtain a pre-processed image with enhanced blood vessels ratherthan inhibited blood vessels, wherein the pre-processed image still well reserves relative depth information of the blood vessels; and the image processing method performs color assignment on the preprocessed image so that the preprocessed image is enabled to have better human eye identification degree.
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Description

technical field

[0001] The present invention relates to the technical field of image processing, in particular to an image processing method and terminal based on near-infrared imaging. Background technique

[0002] At present, there are near-infrared projection vascular imaging devices on the market for image processing. In order to distinguish blood vessels from non-vascular imaging devices, most of them use binarization algorithms, that is, blood vessels and non-vascular imaging devices only have two values ​​after binarization. (For example, blood vessels are represented by 0, and non-blood vessels are represented by 255). This traditional binarization algorithm is represented by 0 below a certain threshold, and 255 above a certain threshold, ignoring the depth information of blood vessels. And the disadvantage of this algorithm is that there are a lot of noise on the edges of blood vessels, the blood vessels and non-vessels are too stiff, the quality of blood vessel ex...

Claims

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