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Lateral face cloud mirror image lip segmentation and elimination method based on Haar detection and vertical projection

A vertical projection and side face technology, applied in image analysis, image enhancement, image data processing, etc., can solve problems such as difficult to distinguish between lips and erythema

Pending Publication Date: 2021-06-25
FUJIAN NORMAL UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a lip segmentation and removal method based on Haar detection and vertical projection in cloud mirror images of side faces, aiming to solve the problem that it is difficult to distinguish lips and erythema when using threshold to segment the lips of port wine stain patients

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  • Lateral face cloud mirror image lip segmentation and elimination method based on Haar detection and vertical projection
  • Lateral face cloud mirror image lip segmentation and elimination method based on Haar detection and vertical projection
  • Lateral face cloud mirror image lip segmentation and elimination method based on Haar detection and vertical projection

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Embodiment Construction

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0036] like Figures 1 to 5 As shown in one of them, the present invention discloses the side face cloud mirror image lip segmentation method based on Haar detection and vertical projection, and its concrete steps are as follows:

[0037] S1: Input the side face photo of the patient, perform haar detection on the cloud mirror image of the side face, judge the orientation of the left and right faces, and cut out the rectangular area where the side face is located. Specific steps are as follows:

[0038] S1-1: Use the Haar left side face model of opencv to judge the left and right orientation of the face in the side face cloud mirror image. If it is a left s...

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Abstract

The invention discloses a lateral face cloud mirror image lip segmentation and elimination method based on Haar detection and vertical projection, and the method comprises the steps: carrying out the Haar detection of a side face cloud mirror image, judging the orientation of a left face and a right face, and then cutting out a rectangular region where the side face is located; converting the image into a YCbCr color space, performing Gaussian smoothing on a Cr component, and segmenting a side face by using a threshold value; cutting an approximate area of the lip by utilizing the priori experience of the proportion of the lip on the face position; and further narrowing the lip range by using the vertical projection of the image grey-scale map, segmenting the lip by using a Grabcut algorithm, generating a mask, and then eliminating the lip by using the mask in the original image through the coordinate corresponding relation. According to the method, for the problem, the position relation after side face segmentation is utilized, the position of the lips is accurate again through vertical projection, and finally the lips can be accurately segmented out.

Description

technical field [0001] The invention relates to the technical field of computer digital image processing, in particular to a lip segmentation and removal method for cloud mirror images of side faces based on Haar detection and vertical projection. Background technique [0002] In the prior art, the use of cloud mirrors to collect skin disease images can be used to assist doctors in judging the severity of the affected area. However, cloud mirrors have limited segmentation accuracy and functions on the affected areas. Image processing technology can be used to quantitatively and customize the analysis of skin lesions. However, when some skin lesions are close to the color of the lips, it is easy to misjudge the lips as skin lesions, such as port wine stains. Therefore, it is necessary to segment and remove the lips before segmenting the lesion tissue, so as not to interfere with the calculation of the color and area of ​​the lesion by the subsequent image processing algorithm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T7/11G06T7/136G06T5/00
CPCG06T7/0012G06T7/11G06T7/136G06T2207/30201G06T2207/20132G06T2207/10024G06T2207/30088G06T5/70
Inventor 谢明良江玉萍徐哲鑫林立航
Owner FUJIAN NORMAL UNIV