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Method for estimating prediction motion vector

A technology of moving vectors and pixel differences, applied to color TV parts, TV system parts, TVs, etc., can solve problems such as cost, multi-system resources and conversion calculation time, unsuitable for real-time applications, etc.

Inactive Publication Date: 2013-03-27
NOVATEK MICROELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the method of phase plane correlation must execute the Fast Fourier Transform (FFT) program to complete the conversion. In this way, too much system resources and conversion operation time will be consumed, so it is still not suitable for real-time in application

Method used

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  • Method for estimating prediction motion vector
  • Method for estimating prediction motion vector
  • Method for estimating prediction motion vector

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Experimental program
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Embodiment Construction

[0022] Please refer to figure 1 , figure 1 It is a schematic diagram of a process 10 of Embodiment 1 of the present invention. For convenience of description, it is assumed that a video image can be divided into a plurality of image blocks, and each image block includes a plurality of pixels. The process 10 can be used to estimate a predicted motion vector of each image block, and the process 10 includes the following steps:

[0023] Step 100: start.

[0024] Step 102: For each pixel in the image block, calculate a pixel difference value corresponding to a current frame and a reference frame.

[0025] Step 104: Determine a pixel difference area according to the pixel difference value.

[0026] Step 106: Determine a predicted motion vector according to the pixel difference area.

[0027] Step 108: end.

[0028] According to the process 10, the present invention can estimate the predicted motion vector corresponding to the image block of the current frame according to the ...

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Abstract

The invention relates to a method for estimating a prediction motion vector. The method for estimating prediction motion vector is used for an image block with a plurality of pixels and includes calculating a pixel difference value between a current image and a reference image for each pixel in the image block; determining a pixel difference area according to the pixel difference value; and determining the prediction motion vector according to the pixel difference area.

Description

technical field [0001] The present invention relates to a method for estimating a predicted motion vector, in particular to a method for estimating a predicted motion vector by using difference information between two frames. Background technique [0002] Motion Estimation is an important technology in video image compression processing. Its purpose is to judge the relevance of the front and rear images to determine a motion vector, and obtain subsequent images based on it. Reduce redundant information (Redundancy Information) between video frames at different times. Since the video image is the result of continuous playing of a series of image frames, its main principle is to make people have a persistent visual response to produce an animation effect through subtle changes in adjacent image frames. Generally speaking, adjacent pictures usually have a strong correlation in space and time, and they should all exist with each other, and some of them should not change at all....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/14
Inventor 陈翠琴刘玉书谢万熹胡毓宗
Owner NOVATEK MICROELECTRONICS CORP