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A method, device and terminal for realizing interactive image segmentation

An image segmentation and interactive technology, applied in the field of image processing, can solve problems such as unsatisfactory segmentation effect

Active Publication Date: 2020-04-17
NUBIA TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The GrabCut algorithm in the related art is based on color images for image segmentation. When the color features of the target object to be extracted are not obvious, the segmentation effect of using color images for segmentation is not ideal.

Method used

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  • A method, device and terminal for realizing interactive image segmentation
  • A method, device and terminal for realizing interactive image segmentation
  • A method, device and terminal for realizing interactive image segmentation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0099] Such as image 3 As shown, the embodiment of the present invention proposes a method for realizing interactive image segmentation, including:

[0100] S310. Obtain a depth map containing depth information of the target object and a mask map initially marked with foreground points and background points on the depth map;

[0101] S320. Determine the segmentation parameters of each pixel on the mask image according to the depth image and the mask image, where the segmentation parameters are used to indicate the probability that the pixel is determined to be a foreground point or a background point and the relationship between the pixel and adjacent pixels Depth value difference;

[0102] S330. Construct an undirected graph, map the segmentation parameters of each pixel in the mask graph to the undirected graph, process the undirected graph according to the min-cut-maximum-flow algorithm, and obtain fine segmentation The mask map;

[0103] S340. Segment an image correspo...

Embodiment 2

[0127] Such as Figure 4 As shown, the embodiment of the present invention proposes a device for realizing interactive image segmentation, including:

[0128] An input module 401, configured to acquire a depth map containing depth information of a target object and a mask map initially marked with foreground points and background points on the depth map;

[0129] A segmentation parameter calculation module 402, configured to determine the segmentation parameters of each pixel on the mask image according to the depth image and the mask image, the segmentation parameters are used to indicate the probability that the pixel is judged as a foreground point or a background point and the The difference in depth value between a pixel and adjacent pixels;

[0130] The mask image adjustment module 403 is configured to construct an undirected graph, map the segmentation parameters of each pixel in the mask image to the undirected graph, and perform a minimum cut-maximum flow algorithm o...

Embodiment 3

[0154] An embodiment of the present invention also provides a terminal, where the terminal includes the above-mentioned device for realizing interactive image segmentation.

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Abstract

The invention discloses an interactive image segmentation method and apparatus, and a terminal. The method comprises the steps of obtaining a depth map containing depth information of a target object and a mask pattern which preliminarily marks foreground points and background points for the depth map; determining segmentation parameters of all pixels on the mask pattern according to the depth map and the mask pattern, wherein the segmentation parameters are used for representing a probability of determining the pixels as the foreground points or the background points and depth value difference of the pixels and the adjacent pixels; constructing an undirected graph, mapping the segmentation parameters of all the pixels in the mask pattern into the undirected graph, and processing the undirected graph according to a minimum cut-maximum flow algorithm to obtain a finely segmented mask pattern; and segmenting out images corresponding to the foreground points in the finely segmented mask pattern from an original image obtained by shooting the target object. According to the method, the apparatus, and the terminal, the image segmentation can be performed by utilizing the depth map.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to a method, device and terminal for realizing interactive image segmentation. Background technique [0002] Image segmentation refers to dividing a plane image into several unconnected regions according to its color, texture, shape and other characteristics. This is a practical basic technology in the field of image processing. Existing image segmentation techniques include threshold-based segmentation methods, edge-based segmentation methods, region-based segmentation methods, energy functional-based segmentation methods, graph theory-based segmentation methods, and so on. Among them, the GraphCut algorithm and its improved version GrabCut algorithm are well-known in the graph theory method. [0003] The GraphCut algorithm and its improved version, the GrabCut algorithm, are interactive image segmentation methods based on region annotation. The GraphCut algorith...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/10G06T7/11G06T7/194
CPCG06T2207/10024
Inventor 梁舟
Owner NUBIA TECHNOLOGY CO LTD