Interpolated frame acquisition method and device in video frame rate conversion

A technology of video frame rate and acquisition method, applied in the field of video processing, can solve problems such as errors, increased computational complexity of bilateral motion estimation, and errors of bilateral motion estimation, and achieves the effect of benefiting image quality, reducing computational complexity, and reducing noise interference.

Active Publication Date: 2011-07-13
HANGZHOU HIKVISION DIGITAL TECH
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Problems solved by technology

However, due to the non-existence of interpolation frames, bilateral motion estimation will also produce errors, the most prominent of which is the "backgro

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  • Interpolated frame acquisition method and device in video frame rate conversion
  • Interpolated frame acquisition method and device in video frame rate conversion
  • Interpolated frame acquisition method and device in video frame rate conversion

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[0042] In the following description, many technical details are proposed in order to enable readers to better understand this application. However, those of ordinary skill in the art can understand that even without these technical details and various changes and modifications based on the following embodiments, the technical solutions required by the claims of this application can be implemented.

[0043] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0044] The first embodiment of the present invention relates to an interpolation frame acquisition method in video frame rate conversion. The specific process is as follows figure 1 Shown.

[0045] In step 110, hierarchical bilateral motion estimation is performed to estimate the MV of the required interpolation block. Specifically, the interpolation...

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Abstract

The invention relates to the field of video processing, and discloses an interpolated frame acquisition method and an interpolated frame acquisition device in video frame rate conversion. The interpolated frame acquisition method comprises the following steps of: dividing an interpolated frame to be solved into a plurality of large blocks; estimating bilateral motion vectors of the large blocks; decomposing the large blocks into a plurality of interpolated small blocks; estimating bilateral motion vectors of the interpolated small blocks by taking the motion vectors of the large blocks as predicted values; after acquiring the motion vectors of the interpolated small blocks of the whole frame, interpolating according to the motion vectors of the interpolated small blocks to acquire the interpolated frame. By hierarchically estimating motion vectors which need interpolated blocks, the accuracy of the motion vectors of the interpolated blocks can be improved, and errors of replacement of objects by backgrounds are better reduced so as to ensure that the interpolated frame has high image quality and a better visual effect. Besides, based on hierarchical search, the interpolated frame acquisition method is low in computation, and is suitable for real-time processing of a high-definition video.

Description

Technical field [0001] The present invention relates to the field of video processing, in particular to video frame rate conversion technology in the field of video processing. Background technique [0002] In recent years, the application of LCD displays has become more and more extensive, but its drawback is that there is a "tailing" phenomenon when displaying dynamic pictures, which causes the resolution of dynamic objects to decrease. The main reason is the retention of the display characteristics of the LCD: because each pixel of the LCD maintains its brightness for one frame time, it continues to act on the eyes of the viewer, and the eyes of the human are visually inert. When the LCD screen switches to the next At one frame, the human eye still retains the content of the previous frame, resulting in a "tailing" phenomenon. [0003] At present, the more common method to solve the phenomenon of "smearing" is to increase the frame rate, that is, to insert one or more frames be...

Claims

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Application Information

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IPC IPC(8): H04N7/26H04N7/46H04N19/176H04N19/51H04N19/513H04N19/577H04N19/587H04N19/59
Inventor 查林黄崇基俞海贾永华
Owner HANGZHOU HIKVISION DIGITAL TECH
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