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Video electronic flutter-proof device

An electronic anti-shake and video technology, applied to color TV parts, TV system parts, TVs, etc., can solve problems such as high cost, increased cost, and reduced CCD utilization

Active Publication Date: 2006-03-08
VIMICRO ELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Optical anti-shake technology has a good anti-shake effect and can make full use of the acquisition pixels of the CCD, but it requires a lens motion compensation device, so the cost is relatively high
Electronic anti-shake does not require a lens motion compensation device, which is cheap and easy to implement, but reduces the utilization rate of the CCD; while the CCD compensation method requires an additional CCD moving device, which also increases the cost to a certain extent

Method used

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  • Video electronic flutter-proof device
  • Video electronic flutter-proof device
  • Video electronic flutter-proof device

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Embodiment Construction

[0036] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0037] The electronic anti-shake method proposed in this embodiment does not need to add a motion compensation sensor to obtain the motion state, but introduces the motion estimation method of video coding technology, and calculates the global relative motion vector of each frame through the motion estimation method, thereby obtaining the global relative motion vector of the current frame. Motion Vector MV N The estimated value of , and through the global relative motion vector MV of several previous frames 1 , MV 2 ,...,MV N-1 Predict the global relative motion vector MV of the current frame N . If MV N and MV NIf the difference between them is greater than a given threshold T, it is considered that shaking has occurred and motion compensation is required; otherwise, the original image is kept without compensation. The princip...

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PUM

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Abstract

The device includes modules: motion estimation and calculation module for calculating vector of relative motion of search block in current frame through algorithm of motion estimation; module for calculating global vector of relative motion in use for obtaining the global vector of current frame; module for storing global vector of relative motion; motion vector calculation module of compensating dithering in use for predicting global vector of relative motion of current frame, and based on difference between global equivalent motion vector estimated by motion estimation and global vector of relative motion to determine whether there is dithering so as to output vector of motion to compensate dithering; dithering compensation module in use for inputting total pixels image of current frame, and based on vector of motion to compensate dithering and size of effective pixels image, cutting out a effective image with dithering compensated. Advantages are: simple, effective and cost saving.

Description

technical field [0001] The invention relates to a video electronic anti-shake device used in video collection and output equipment. technical background [0002] With the advancement and development of science and technology, many new functions have been added to equipment such as digital cameras and digital video cameras. But these handheld devices inevitably cause image shaking due to human factors. This vibration avoidance can be achieved through anti-shake technology. The anti-shake system at this stage is mainly divided into two categories: optical anti-shake and electronic anti-shake. Optical anti-shake is to sense the shake of the camera through the built-in instrument of the lens, and then adjust the position of the lens in the lens to achieve the anti-shake effect. Optical image stabilization technology is commonly used in high-end digital cameras and digital video cameras. Electronic image stabilization is to process images by electronic means to reduce the imp...

Claims

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Application Information

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IPC IPC(8): H04N5/232H04N5/14G06T7/20
Inventor 夏煜王浩怀千江
Owner VIMICRO ELECTRONICS CORP
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