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Image edge extraction method, device, storage medium and equipment

An image edge and extraction method technology, which is applied in image analysis, image enhancement, image data processing, etc., can solve the problem of low accuracy of image edge extraction, achieve the effect of weakening the influence of interference and improving accuracy and ability

Active Publication Date: 2021-11-26
NANCHANG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, the object of the present invention is to provide an image edge extraction method, device, storage medium and equipment to solve the technical problem of low accuracy of existing image edge extraction

Method used

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  • Image edge extraction method, device, storage medium and equipment
  • Image edge extraction method, device, storage medium and equipment
  • Image edge extraction method, device, storage medium and equipment

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Embodiment 1

[0059] see figure 1 , shows the image edge extraction method in the first embodiment of the present invention, the method specifically includes step S01-step S05.

[0060] Step S01, acquiring an original color image containing a target object, and extracting an area where the target object is located from the original color image to obtain an image of a region of interest.

[0061] Specifically, the original color image is an RGB three-channel image, which can be obtained by taking pictures of the target object with a camera. Wherein, the target object can be a fixed shape object, such as a water cup, a pencil, etc., or an object with a changing state, such as an umbrella, or a short-lived object, such as a water bubble, an air bubble, etc. For example, in some optional embodiments of this embodiment, the original color image can be an image of underwater welding bubbles, which can be obtained by high-speed shooting of underwater welding with an industrial camera, and the ta...

Embodiment 2

[0074] see figure 2 , shows the image edge extraction method in the second embodiment of the present invention, this embodiment will take the edge profile of underwater welding bubbles extracted from the underwater welding bubble image as an example to elaborate on the method, the method specifically Including step S11-step S16.

[0075] Step S11, using an industrial camera to take high-speed photographs of the underwater welding blisters to obtain an original color image of the underwater welding blisters.

[0076] Step S12, extracting the region where the underwater welding blister is located from the original color image of the underwater welding blister to obtain an image of the region of interest.

[0077] Step S13, scan each pixel in the image of the region of interest in the scanning order from left to right and from top to bottom, and use a preset grayscale conversion formula to grayscale each scanned pixel. degree conversion to obtain the corresponding grayscale im...

Embodiment 3

[0142] Another aspect of the present invention also provides an image edge extraction device, please refer to Figure 10 , shows the image edge extraction device in the third embodiment of the present invention, the device includes:

[0143] An image extraction module 11, configured to acquire an original color image containing a target object, and extract the region where the target object is located from the original color image to obtain an image of a region of interest;

[0144] A grayscale processing module 12, configured to perform grayscale processing on the image of the region of interest to obtain a corresponding grayscale image;

[0145] A grayscale transformation module 13, configured to perform piecewise linear grayscale transformation processing on the grayscale image to obtain a transformed grayscale image;

[0146] A bilateral filtering module 14, configured to perform bilateral filtering on the converted grayscale image to obtain a filtered grayscale image;

...

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Abstract

The present invention provides an image edge extraction method, device, storage medium and equipment. The method includes: acquiring an original color image containing a target object, and extracting the area where the target object is located from the original color image to obtain an image of a region of interest; Perform grayscale processing on the image of the region of interest; perform piecewise linear grayscale transformation processing on the grayscale image; perform bilateral filtering on the transformed grayscale image; input the filtered grayscale image to the pre-training In the image edge extraction model, to extract the edge contour of the target object. In the present invention, the image of the region of interest is first grayscaled, segmented linear grayscale transformation and bilateral filtering are processed sequentially, which can obviously filter and eliminate image noise points, and use the training model to extract the edge contour of the image, which can It greatly weakens the interference effect of residual noise points on edge extraction, thereby improving the accuracy and ability of image edge extraction.

Description

technical field [0001] The present invention relates to the technical field of image feature extraction, in particular to an image edge extraction method, device, storage medium and equipment. Background technique [0002] Image edge extraction is a common image feature extraction technology. The edge contour information of the target object in the image can be extracted through the image edge extraction algorithm, so as to provide the follow-up technology for identifying the target object and its related information in the image based on the edge contour. the premise basis. [0003] In the existing technology, the traditional edge extraction algorithm first uses the differential operator to obtain the high-pass component of each pixel and then filters to obtain the image edge. The classic differential operators include Canny operator and Sobel operator, but this method The existing defects are: in the edge extraction process, the filtering and elimination of image noise po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/13G06T5/00G06N3/04
CPCG06T7/13G06T2207/20028G06T2207/20104G06N3/045G06T5/92G06T5/70
Inventor 郭波张渴望
Owner NANCHANG INST OF TECH
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