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Three-dimensional video format conversion method based on motion adaption and marginal protection

An edge protection and format conversion technology, applied in the field of electronic information, can solve the problems of rough motion information, difficult to achieve format conversion, unable to complete standard definition video conversion, etc.

Inactive Publication Date: 2004-09-15
SHANGHAI JIAO TONG UNIV +1
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Problems solved by technology

The motion compensation information used in this patent is the result of motion estimation in compression coding. This kind of motion information is relatively rough, and it is difficult to meet the requirements of format conversion under normal circumstances.
In addition, the method provided by this patent only completes the interlaced to progressive function, and does not involve other resolution conversions and frame rate conversions, and cannot complete the conversion of standard-definition video to high-definition video, so its format conversion function is not perfect.

Method used

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  • Three-dimensional video format conversion method based on motion adaption and marginal protection
  • Three-dimensional video format conversion method based on motion adaption and marginal protection
  • Three-dimensional video format conversion method based on motion adaption and marginal protection

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Embodiment Construction

[0050] The specific implementation manner of the present invention provides following embodiment in conjunction with accompanying drawing:

[0051] as the picture shows, figure 1 It is an overall block diagram of the algorithm involved in the present invention. The video format conversion process is as follows: the format conversion is performed on the input image 16 of standard definition interlaced scanning, and its field number is set as n. The input image 16 is connected with five channels, four of which are luminance signal channels, and one is a chrominance signal channel; among the four luminance signal channels, the first one is connected to the field memory 1, so as to be used as the motion of the next input field Detect reference signal; the second is connected with motion detection and interpolation unit 2; the third is connected with image expansion (I) unit 3; the fourth is connected with edge correlation direction judgment and interpolation unit 4. Chroma signa...

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Abstract

In the invention, video format conversion is completed based on noninterlace. In procedure of converting interlaced sequence to noninterlaced sequence, strategy of edge protection and motion self-adapting strategy are utilized to modify result of interpolation in field. Steps for converting video format are: non-interlaced treatment of interlaced sequence is carried out for video signal inputted in interlaced format first. In procedure of non-interlaced treatment, following operations is executed: summarizing 2D interpolation in field of edge protection and weighted Cubic 2D interpolation; then, summarizing the said above 2D summarized result and weighted 3D result of motion self-adapting interpolation. After non-interlaced treatment, conversion of frame rate is carried out. Finally, converting resolution of frame outputs video sequence in specific frame rate or field rate. The invention uses handy algorithm to achieve conversion task, providing full functions and wide applicable region.

Description

technical field [0001] The invention relates to a video image format conversion method, in particular to a three-dimensional multi-phase interpolation video format conversion method based on motion self-adaptation and edge protection. It belongs to the field of electronic information. Background technique [0002] Video format conversion is a necessary means to ensure that videos with different resolution and frame rate formats can be played normally on a monitor with a fixed display format. With the promotion of digital video services such as digital TV, the requirements for video format conversion technology are also increasing. Video format conversion technology includes three aspects: interlaced / progressive conversion, resolution conversion and frame rate conversion, which can be realized by different interpolation methods. [0003] It is found through literature search that the Chinese patent name is: "Video format conversion device and method", and the application nu...

Claims

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Application Information

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IPC IPC(8): H04N7/01
Inventor 郑世宝董云朝杨宇红王继生邹琪
Owner SHANGHAI JIAO TONG UNIV
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