Frame frequency lifting method for combining target partition and irregular block compensation

A target segmentation and irregular technology, applied in the field of video processing, can solve problems such as damage compensation effect

Inactive Publication Date: 2010-01-06
CHONGQING UNIV +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the division of its high and low correlation parts is judged according to the threshold value set for the pixel difference between two matching blocks, which will inevitably lead to misjudgment due to different threshold settings and damage the compensation effect.

Method used

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  • Frame frequency lifting method for combining target partition and irregular block compensation
  • Frame frequency lifting method for combining target partition and irregular block compensation
  • Frame frequency lifting method for combining target partition and irregular block compensation

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Embodiment Construction

[0056] figure 2 It is a flow chart of a specific embodiment of a method for increasing frame rate combined with object segmentation and irregular block compensation in the present invention. see figure 2 , a frame rate improvement method that combines target segmentation and irregular block compensation, has the following steps:

[0057] First, extract the current frame and the previous frame of the current frame from the video sequence as a reference frame, and create a blank frame to be inserted;

[0058] Second, in order to reduce the amount of calculation in the motion estimation process, the bilinear interpolation method is used to down-sample the reference frame and the blank frame to be interpolated;

[0059] Third, calculate the frame difference between the two reference frames before and after to obtain the contour of the moving target, and use the morphological method to obtain the mask of the moving target area;

[0060] Fourth, according to the moving target a...

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Abstract

The invention discloses a frame frequency lifting method for combining target partition and irregular block compensation, which is characterized by comprising the following steps that: firstly, establishing a blank frame to be inserted; secondly, sampling a reference frame and the blank frame to be inserted; thirdly, calculating the frame difference between the reference frame and the blank frame to obtain a moving target outline and a moving target area mask by applying the morphological method; fourthly, partitioning the two reference frames into a target area and a background area; fifthly, moving and estimating subarea processing to obtain an initial motion vector; sixthly, smoothening the obtained initial motion vector; seventhly, trimming the initial motion vector after being smoothened to obtain a more accurate motion vector; eighthly, calculating the compensation weight coefficient Mu; ninthly, partitioning the block into a high relevant area and a low relevant area; tenthly, compensating subarea processing; and eleventhly, generating an interpolated frame. The method can be widely applied to the technical fields of video coding and encoding and video processing.

Description

technical field [0001] The invention relates to the technical field of video processing, in particular to a method for increasing frame rate combined with object segmentation and irregular block compensation. Background technique [0002] In low bit rate video coding, some encoders use frequency hopping techniques to meet the required compression ratio. In this case, image frames in the input sequence are periodically discarded from the encoding process, thus, temporal artifacts (such as jitter) are introduced at the receiving end, which will cause severe degradation of video quality. At this point, the skipped image frames need to be regenerated using frame rate up-conversion (FRUC) on the decoder in order to reduce temporal artifacts. [0003] In addition, liquid crystal LCD displays have been widely developed and applied in recent years, but their defects are motion blur such as smearing and afterimages when displaying dynamic images. Due to the limited degree of reduci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N19/176H04N19/51H04N19/583
Inventor 田逢春姬艳丽刘艳飞谭洪涛周洋生段淑玉任晓羽
Owner CHONGQING UNIV
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