Title:
SUBLINGUAL VEIN FEATURE EXTRACTION APPARATUS AND METHOD
Document Type and Number:
WIPO Patent Application WO/2020/108437
Kind Code:
A1
Abstract:
The present invention provides a sublingual vein feature extraction apparatus and method. The method comprises the steps of: performing training using different tongue surface sample images to generate a tongue ventral surface detector; detecting, using the tongue ventral surface detector, from a tongue surface image a tongue ventral surface comprising the lips; capturing the tongue ventral surface according to position information of the tongue ventral surface; performing threshold segmentation processing on the tongue ventral surface to obtain a shadow region and a tooth region of the tongue ventral surface; creating a tongue ventral surface segmentation template using the shadow region and the tooth region; segmenting, using the tongue ventral surface segmentation template, tongue ventral surface images from the tongue surface image; classifying the tongue ventral surface images to obtain a classification result image; segmenting left and right sublingual veins from the classification result image, and performing morphological processing on the left and right sublingual veins to obtain left and right sublingual vein templates; and calculating a sublingual vein image using the left and right sublingual vein templates, and extracting sublingual vein features from the sublingual vein image. The present sublingual vein feature extraction method increases the accuracy of sublingual vein feature extraction.
Inventors:
ZHANG GUANJING (CN)
GE XINKE (CN)
GAO WEIMING (CN)
LV CHAO (CN)
GE XINKE (CN)
GAO WEIMING (CN)
LV CHAO (CN)
Application Number:
PCT/CN2019/120645
Publication Date:
June 04, 2020
Filing Date:
November 25, 2019
Export Citation:
Assignee:
ANYCHECK INFORMATION TECH CO LTD (CN)
E TECHNO INF TECH CO LTD (CN)
E TECHNO INF TECH CO LTD (CN)
International Classes:
G06K9/00; G06K9/34; G06K9/62
Foreign References:
| CN104298983A | 2015-01-21 | |||
| CN101576913A | 2009-11-11 | |||
| CN104537379A | 2015-04-22 |
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