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Hand vein pattern developing method based on mathematical morphology operation

A technique of mathematical morphology and vein imaging, applied in computing, image enhancement, image data processing, etc., can solve problems such as inability to obtain effects, and achieve the effect of improving clarity

Inactive Publication Date: 2014-02-19
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Traditional vein imaging is mostly performed through image enhancement, binarization processing, and then filtering and denoising for vein imaging. However, when the collected image has many textures, this method cannot get good results.

Method used

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  • Hand vein pattern developing method based on mathematical morphology operation
  • Hand vein pattern developing method based on mathematical morphology operation
  • Hand vein pattern developing method based on mathematical morphology operation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0035] figure 1 It is a flow chart of a specific embodiment of the method for imaging dorsal hand veins based on mathematical morphological operations in the present invention. like figure 1 Shown, the present invention comprises the following steps:

[0036] S101: Histogram equalization:

[0037] The histogram equalization method is used to process the original image of the dorsal vein acquired by near-infrared to enhance the contrast of the original image.

[0038] Due to the acquisition equipment, most of the pictures collected by near-infrared are not high in contrast, and the gray levels of the collected images are mostly concentrated in a certain area. figure 2 is an example of a near-infrared raw image. image 3 for figure 2 Histogram of the image shown. like image 3 As shown, in the original image of this embodiment, the order of grayscale values ​​is 256, and the grayscale values ​​are concentrated between 100-150. Such an image has low contrast and looks d...

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Abstract

The invention discloses a hand vein pattern developing method based on mathematical morphology operation. Firstly, contrast enhancement is carried out on a hand vein pattern original image obtained through near infrared by the adoption of a histogram equalization method; secondly, high-pass filtering is carried out on the obtained image for denoising; thirdly, the image is processed in a mathematical morphological processing method by the adoption of opening operation to eliminate texture features in the image; fourthly, image reconstruction is carried out in a continuous geodesic dilation method; fifthly, secondary noise brought by the opening operation and the image reconstruction is eliminated by the adoption of a Gaussian mask algorithm, and therefore a clear hand vein pattern image is obtained. The method can achieve image fusion of the image after contrast enhancement and a result image by the adoption of the original image, and clearness of the hand vein pattern image is further improved.

Description

technical field [0001] The invention belongs to the technical field of vein imaging, and more specifically relates to a dorsal hand vein imaging method based on mathematical morphological operations. Background technique [0002] Venipuncture is a common medical method, such as intravenous injection, which is widely used in daily medicine. But clinically, it is not easy to perform venipuncture accurately and quickly. Foreign statistical data show that: the first-time puncture failure rate of ordinary adult intravenous injection is 28%; 23-28% of the “missing needles” occurred when the patient was in the hospital; 12% of cancer patients had complete puncture failure; among inpatients, 25% had difficulty in puncture three days after admission; low puncture success rate or One of the biggest reasons why many people are reluctant to donate blood. [0003] With the development of science and technology and the improvement of people's living standards, people's requirements for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00
Inventor 刘健隆克平冯家刚
Owner UNIV OF SCI & TECH BEIJING
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