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Drafting view synthesizing method based on depth image

A technology of depth image and view synthesis, applied in the field of stereoscopic TV, which can solve problems such as being unsuitable for 3DTV and reducing image quality.

Inactive Publication Date: 2009-04-08
SICHUAN PANOVASIC TECH +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, these methods often reduce the quality of the image while eliminating holes, or are not suitable for 3DTV transmission due to the need for multiple reference images

Method used

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  • Drafting view synthesizing method based on depth image
  • Drafting view synthesizing method based on depth image

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Embodiment Construction

[0014] In order to better understand the present invention, the present invention will be described in more detail below in conjunction with specific embodiments. In the following description, when detailed descriptions of existing prior art may obscure the subject matter of the present invention, such descriptions will be omitted here.

[0015] figure 1 It is a typical flow chart of view synthesis based on depth image rendering in the prior art. In the figure, after the depth image is preprocessed, the 3D image transformation is directly performed, and finally the hole is filled, which reduces the image quality of the non-hole area while eliminating the hole, and cannot preserve the authenticity of the view well.

[0016] figure 2 It is a specific flow chart of a specific embodiment of the present invention.

[0017] In this embodiment, the specific process is:

[0018] (1), utilize Gaussian low-pass filter to reference image I R The original depth image D is filtered t...

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Abstract

The invention discloses a view synthetic method based on the drawing of a depth image. The method comprises that firstly, the depth image is smoothed; and then the three-dimensional image transformation is carried out twice; the first transformation uses a smoothed depth image to obtain an object image comprising a smaller hollow space; the second transformation uses an original depth image to obtain an object image comprising a larger hollow space; then, the two object images are blended based on the object image obtained in the second transformation; hallow space padding is carried out on the object image obtained in blending. The method is characterized in that a zero-one matrix corresponding to the object image is maintained from beginning to end in the process of video synthesis for pointing out whether a certain point in the object image is a hollow point or not; the three-dimensional image transformation is carried out twice in the process of view synthesis, thus guaranteeing that the quality of the image in a non-hollow area is not reduced while the hollow space is eliminated and the authenticity of the image is reserved as far as possible.

Description

technical field [0001] The present invention relates to the technical field of stereoscopic television, in particular, to a view synthesis method based on depth image rendering. Background technique [0002] Following High-Definition TV (High-Definition TV), stereoscopic TV (3DTV) will become the development direction of next-generation TV technology. The traditional stereoscopic video is obtained by fixing the left and right cameras in the scene to simulate the eyes of people from two different angles. This results in the need to transmit two channels of video when transmitting programs. In order to reduce data transmission, both the joint video team JVT and the European ATTEST project suggest adopting the data format of "video + depth". In this way, the left and right videos can be synthesized from the middle video and its corresponding depth image (depth image), which is the depth image based rendering (Depth Image Based Rendering, DIBR) technology in 3DTV. DIBR can us...

Claims

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Application Information

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IPC IPC(8): H04N15/00
Inventor 刘然杨刚张小云
Owner SICHUAN PANOVASIC TECH
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