Depth generating method based on background difference sectional drawing and sparse optical flow method

A sparse optical flow and background technology, applied in image analysis, image data processing, instruments, etc., to solve the occlusion problem and improve the speed

Inactive Publication Date: 2010-04-28
无锡景象数字技术有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

For scenes where the camera is fixed, that is, the background does not move, but there are moving objects, using the optical flow method will cause occlusion problems that cannot be solved by itself, mainly the occlusion between the foreground moving objects and the background

Method used

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  • Depth generating method based on background difference sectional drawing and sparse optical flow method
  • Depth generating method based on background difference sectional drawing and sparse optical flow method
  • Depth generating method based on background difference sectional drawing and sparse optical flow method

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with drawings and embodiments.

[0029] Such as image 3 Shown, the present invention comprises the following steps:

[0030] 1) Select an appropriate color space or establish a color model: For this study, choose the RGB color space. In the RGB space, it is necessary to consider selecting appropriate color features to separate chromaticity and brightness, which is helpful for detecting shadow and highlight areas. . In this space, comparing the difference between two colors is to compare the Euclidean distance of two vectors in the space, such as figure 1 shown. In the figure, D i is a difference vector, which can be decomposed into brightness E according to human visual characteristics i -α i E. i and Chroma CD i Components, from which a color model is established.

[0031] 2) When a certain color space is determined, it is necessary to select an appropriate color feature or establish a color...

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Abstract

The invention relates to a depth generating method based on a background difference sectional drawing and a sparse optical flow method. The depth generating method comprises the following steps: selecting suitable colour space and establishing a colour model; establishing a background model fast and effectively so as to exactly describe the background of a video sequence; classifying each pixel point according to the background model; optimizing the classified result of the pixel; evaluating an optical flow value of a feature point by the sparse optical flow method; evaluating the optical flow values of all the points by interpolation; and obtaining a depth value by the optical values. The invention has the advantages as follows: the sheltering problem which cannot be solved by singly using the optical flow method can be avoided; and the generation of the depth of the video sequence can be automatically realized.

Description

technical field [0001] The invention relates to image segmentation and depth generation technology, in particular to a depth generation method based on background difference matting and sparse optical flow method. Background technique [0002] Three-dimensional images and displays are an important form of expression for future information systems. Three-dimensional images and displays are clearly layered and colorful, and have a strong visual impact, allowing viewers to stay longer and leave a deep impression; The image and reality give people a real and lifelike feeling, the characters are ready to appear, and the feeling of being on the scene has a high artistic appreciation value. However, there is such a contradiction in the current stereoscopic display market: the rapid popularization of stereoscopic display equipment and the serious shortage of stereoscopic display film sources. At present, there are two situations in which flat media resources are transformed into th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00
Inventor 季向阳闫友为曹汛刘晓冬刘磊
Owner 无锡景象数字技术有限公司
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