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Region-of-interest extraction method and device, electronic equipment and storage medium

A region of interest and extraction method technology, which is applied in the fields of devices, region of interest extraction methods, electronic equipment and storage media, and can solve the problem of low accuracy of the region of interest

Pending Publication Date: 2021-05-11
UNIV OF ELECTRONICS SCI & TECH OF CHINA ZHONGSHAN INST +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the embodiments of the present application is to provide a method, device, electronic device, and storage medium for extracting a region of interest, which is used to improve the problem of low accuracy in extracting a region of interest in a finger vein image with a complex background

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  • Region-of-interest extraction method and device, electronic equipment and storage medium
  • Region-of-interest extraction method and device, electronic equipment and storage medium
  • Region-of-interest extraction method and device, electronic equipment and storage medium

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Embodiment approach

[0087] In the second embodiment, the similarity threshold is determined from multiple similarities, and then the identity information is determined according to the similarity threshold; wherein, there are many ways to determine the similarity threshold, which can be a constant threshold set by oneself, or Select a similarity between the average value and the maximum value of multiple similarities as the similarity threshold, or select the minimum similarity value from the similarity between multiple similar feature maps, and select from multiple heterogeneous The similarity between the feature maps screens out the maximum similarity; the average of the minimum similarity and the maximum similarity is determined as the similarity threshold.

[0088] See Figure 6 A schematic structural diagram of an apparatus for extracting a region of interest provided in the embodiment of the present application is shown. The embodiment of the present application provides an apparatus 300 f...

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Abstract

The invention provides a region-of-interest extraction method and device, electronic equipment and a storage medium. The method comprises the steps of obtaining a finger vein image of a person to be authenticated; performing convolution operation on the finger vein image to obtain a convolution result image; performing binarization operation on the convolution result image to obtain a binarized image; carrying out refinement operation on the binary image to obtain a refined image; performing curve tracking on the refined image to obtain an edge curve; and performing image segmentation on the finger vein image according to the finger edge curve to obtain a region of interest of the finger vein image. In the implementation process, the convolution operation, the binarization operation, the refinement operation and the curve tracking are performed on the finger vein image, so that the accuracy of obtaining the finger edge curve is effectively improved, and then the high-accuracy finger edge curve is used for performing image segmentation on the finger vein image, so that the accuracy of obtaining the region of interest of the finger vein image is improved.

Description

technical field [0001] The present application relates to the technical field of image processing and image recognition, in particular, to a method, device, electronic device and storage medium for extracting a region of interest. Background technique [0002] Region Of Interest (ROI) refers to the region that can reflect identity features, that is, the features extracted from the region of interest can be used for identity authentication or identification. The main function of the region of interest extraction is to reflect the identity The area of ​​the feature is extracted, and the area irrelevant to the identity feature is removed to prevent it from interfering with the accuracy of identity authentication. [0003] At present, the method based on edge extraction is mostly used to extract the region of interest in the finger vein image. The method based on edge extraction here includes but not limited to: edge detection algorithm based on Sobel operator, or based on Canny...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/32G06K9/00G06K9/34G06K9/46G06N3/04G06N3/08G06N20/00G06T7/12G06T7/194
CPCG06T7/12G06T7/194G06N3/04G06N3/08G06N20/00G06T2207/20104G06T2207/20081G06T2207/30101G06V40/10G06V40/14G06V10/267G06V10/25G06V10/44
Inventor 宋丹姚琼李文生李华川戴坤龙
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA ZHONGSHAN INST
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