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A Correlation-Based Adaptively Compensated Stereoscopic Video Frame Rate Upconversion Method

A technology of adaptive compensation and frame rate up-conversion, applied in the field of image and multimedia signal processing, it can solve the problems of blurred edges and errors, and achieve the effect of good edge characteristics, high quality and accurate motion vector.

Active Publication Date: 2019-04-16
SHANDONG UNIV
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Problems solved by technology

Therefore, if we up-convert the frame rate of the depth map in the same way as the texture map, then the image blur caused by motion matching errors and smoothing will become edge blur and edge errors in the depth map

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  • A Correlation-Based Adaptively Compensated Stereoscopic Video Frame Rate Upconversion Method
  • A Correlation-Based Adaptively Compensated Stereoscopic Video Frame Rate Upconversion Method
  • A Correlation-Based Adaptively Compensated Stereoscopic Video Frame Rate Upconversion Method

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[0029] The specific process of the stereoscopic video frame rate up-conversion method proposed by the present invention is as follows: figure 1 As shown in Fig. 1, the depth image is first classified according to the edge, and the current frame and the next frame of the texture image are obtained by edge-based adaptive motion estimation according to the classification results to obtain the initial motion vector, and then the optimal motion vector is obtained by post-processing based on the depth information. Motion vector, and then judge the edge area of ​​the hole block to complete the interpolation of motion compensation, achieve the frame rate up-conversion of the depth map and the texture map, effectively reduce the edge misinterpolation of the depth map, and achieve the purpose of high-quality reconstruction.

[0030] The present invention will be further described below in conjunction with specific embodiments (but not limited to this example) and accompanying drawings. ...

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Abstract

The correlation between a depth map and a texture map is used, classification of edge blocks and flat blocks is carried out on the depth map, a block motion matching criterion with texture gradient information added is adopted to obtain motion vectors of different macro blocks according to marks, motion vector post-processing and adaptive interpolation are carried out on the different macro blocks respectively, and a depth map interpolation frame and a texture map interpolation frame are obtained at the same time. Compared with the traditional frame rate up conversion method, the method of the invention enhances processing on edges of the depth map, the interpolated depth map has better edge features, and the interpolated texture map has better quality.

Description

technical field [0001] The invention relates to a stereoscopic video frame rate up-conversion technology, which belongs to the technical field of image and multimedia signal processing. technical background [0002] Free-viewpoint TV presents the audience with a three-dimensional viewing effect through multi-viewpoint playback, and thus has been widely developed. Due to the limitation of transmission bandwidth, the current research and application of 3D video usually adopts the depth video (MVD) mode. The presentation of the virtual viewpoint in 3D video is obtained by combining the real viewpoint texture map with the corresponding depth map through the depth map-texture map rendering technology (DIBR). The depth map is not used for direct viewing, but only for synthesizing virtual viewpoints. [0003] Frame rate up-conversion technology can break through the limitation of network transmission bandwidth, and increase the video frame rate by multiples at the receiving end, t...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/597H04N13/139
CPCH04N13/139H04N19/597
Inventor 刘琚肖依凡曲爱喜郭志鑫
Owner SHANDONG UNIV
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