Real-time three-dimensional face modeling method used for computer graph and image processing and based on depth information

A computer graphics and image processing technology, applied in image data processing, computing, 3D modeling, etc., can solve the problem of low accuracy of depth images

Inactive Publication Date: 2014-10-01
詹曙 +1
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Problems solved by technology

The depth image obtained by kinect has

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  • Real-time three-dimensional face modeling method used for computer graph and image processing and based on depth information
  • Real-time three-dimensional face modeling method used for computer graph and image processing and based on depth information
  • Real-time three-dimensional face modeling method used for computer graph and image processing and based on depth information

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Embodiment Construction

[0027] A real-time three-dimensional human face modeling based on depth information for computer graphics and image processing, characterized in that the steps of the method are as follows:

[0028] (1) Data acquisition: The user sits about 0.5 meters in front of the kinect, and the kinect obtains an original depth map D from the kinect at time τ τ ,D τ Consists of a group of pixels (u, v), each pixel depth value D τ (u,v);

[0029] (2) Segmentation: 1) The present invention divides the depth map into a foreground area and a background area, the foreground area includes the user's entire body, and the background area only includes the remaining environment. Foreground regions are identified using connected component analysis, and two adjacent depth pixels are considered adjacent when their difference is below a critical value. Assuming that the foreground area is the largest part of the shortest distance from the camera; 2) In order to determine the head area, the present i...

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Abstract

The invention provides a real-time three-dimensional face modeling method based on depth information; the method does not adopt any previous standard face models but realizes the three-dimensional real-time modeling through registration and integration of a plurality of face depth images. The method comprises the following steps: systematically building depth information acquired from kinect; separating facial images from the depth images; back projecting, so as to form three-dimensional point cloud; smoothing, registering, integrating, drawing and displaying. With the adoption of the real-time three-dimensional face modeling method used for the computer graph and image processing and based on the depth information, a three-dimensional real-time face model required by a user can be rapidly generated only through that the user sits in the front of kinect, so that the cost and time spent on three-dimensional face modeling through laser scanning in the past are greatly reduced, and errors caused by using two-dimensional images for three-dimensional face modeling are avoided, so that three-dimensional real-time face modeling is realized at a lower cost.

Description

technical field [0001] The present invention relates to the technical field of computer graphics and image processing, and specifically refers to a real-time three-dimensional face modeling method based on depth information for computer graphics and image processing Background technique [0002] 3D reconstruction technology is a hotspot and difficulty in frontier fields such as computer vision, artificial intelligence, and virtual reality. It is also one of the major challenges faced by human beings in basic research and applied research. Industrial measurement, immersive virtual interaction and other fields. The existing 3D reconstruction technology can be divided into passive technology and active technology according to the way of obtaining depth information. Passive technology uses natural light reflection, generally takes pictures through the camera, and then calculates the three-dimensional coordinate information of the object through a series of algorithms, such as s...

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Application Information

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IPC IPC(8): G06T17/00G06T7/00
Inventor 詹曙常乐乐
Owner 詹曙
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