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Depth image obtaining method for integrated imaging system

A technology that integrates imaging and acquisition methods, applied in stereoscopic systems, image communication, electrical components, etc., can solve problems such as difficulties in obtaining depth maps

Inactive Publication Date: 2014-09-24
CHANGCHUN UNIV OF SCI & TECH
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Problems solved by technology

[0007] The purpose of the embodiments of the present invention is to provide a depth map acquisition method for an integrated imaging system, aiming to solve the problem that it is difficult to directly obtain a depth map through the parallax information between element images using the traditional multi-vision method in the integrated imaging system

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  • Depth image obtaining method for integrated imaging system

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specific Embodiment

[0094] (1), the collection part of the integrated imaging system in the embodiment of the present invention collects the 2D element image collection of the space scene, the element image is 52 rows*52 columns, and each element image is 40*40 pixels, which is generated by computer reconstruction method Multiple views from different viewpoints, select six views with horizontal parallax for depth map acquisition;

[0095](2), using the leftmost one of the six views as a reference image, perform stereo matching with other views respectively to obtain five disparity maps, the detailed steps are as follows:

[0096] 1. Set the search window size as W=31, and the color similarity judgment threshold as T1=30;

[0097] 2. Establish an adaptive matching window W1 for the pixel (i, j) in the reference image: according to the principle of color similarity, with the pixel as the center, calculate the absolute value of the color difference between each pixel in the search window W and the c...

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Abstract

The invention discloses a depth image obtaining method for an integrated imaging system. Firstly, multiple views of different viewpoints are generated by utilizing a computer reconstruction method; N views with continues horizontal parallaxes are selected from the views, the left-most or the right-most view is used as a reference image, stereo matching is carried out on the reference image and other views respectively, and (N-1) parallax images are obtained; proportional function fitting is carried out on (N-1) parallax values of each pixel on the basis of the (N-1) parallax images of the reference image, a fitting coefficient is the parallax value between the corresponding pixel and the nearest view, and a depth image of the reference image is obtained through calculation according to the relational expression between the parallax and depth. According to the depth image obtaining method for the integrated imaging system, the process of depth measurement is simplified, the stereo matching process is easy to achieve, mismatching among the views in image edge areas and depth discontinuous areas is lowered, mismatching generated due to noise recording and other factors is eliminated, and the accuracy of the depth image is improved.

Description

technical field [0001] The invention belongs to the technical field of three-dimensional depth information acquisition, and in particular relates to a method for acquiring a depth map of an integrated imaging system. Background technique [0002] Depth measurement has a wide range of applications in augmented reality technology for virtual reality simulation, stereoscopic display, telemedicine, and graphics-based rendering. Depth measurement is an important step in obtaining depth information of 3D scenes, and it is one of the important problems in the field of machine vision research. [0003] At present, there are mainly two ways to obtain the depth map, one is to obtain it through shooting with a depth camera, and the other is to obtain it through a stereo matching algorithm. Since the depth camera is expensive and the resolution of the obtained depth map is low, currently the depth map obtained through the stereo matching algorithm has become the main method. [0004] ...

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Application Information

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IPC IPC(8): H04N13/00
Inventor 王宇朴燕
Owner CHANGCHUN UNIV OF SCI & TECH
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