Video stabilizing method based on matching and tracking of characteristic

A video stabilization and feature matching technology, applied in TV, color TV, color TV components and other directions, can solve the problems of ghosting phenomenon, blurring, large time cost, etc., to achieve pleasant visual experience, good robustness and accuracy high degree of effect

Inactive Publication Date: 2007-08-01
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But they all have various defects: the simple Mosaic method will produce blur and ghosting, and the method based on motion estimation, although the result of patching is better than the former, but due to the need to calculate the motion vector of each pixel , so it takes a relatively large time cost

Method used

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  • Video stabilizing method based on matching and tracking of characteristic
  • Video stabilizing method based on matching and tracking of characteristic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] 1. The test data is a jitter video clip shot by a hand-held camera.

[0024] 2. Smooth each frame with a Gaussian function whose scale increases by 2 times, and find the extreme value of the difference of each layer as the feature point. Then upsample the image, smooth it with Gaussian functions of different scales, find the difference to find the extreme value, and so on. We upsample 3 times in the experiment. See Figure 2 for details on finding the Gaussian difference. Figure 3 illustrates the range of extreme points, including neighbor nodes on the same layer and upper and lower layers.

[0025] 3. Calculate the gradient direction of each feature point. The specific formula is as follows:

[0026] m ( x . y ) = ( L ( x + 1 ...

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Abstract

This invention relates to one visual frequency stable method based on property matching in the computer image visual frequency process technique field, which comprises the following steps: finding out each frame of visual SIFT property points; adopting simulation module as parameters estimation module for total estimation; adopting Gauss filter and curve matching method to process visual sequence process to fill unknown area.

Description

technical field [0001] The invention belongs to the technical field of computer digital image video processing, and in particular relates to a video stabilization method based on feature point matching and tracking. Background technique [0002] Video deshaking (also known as video stabilization) is a very important video enhancement technology. With the significant reduction in the price of digital camera equipment and the improvement of computer performance, personal digital camera equipment and mobile digital camera equipment are becoming more and more popular, and digital image and video processing technology has received more attention. With these devices, no matter where you go, you can easily record what happens around you at any time, and a large number of video data taken by individuals can be uploaded to the Internet for people to watch and download. Due to the instability of camera equipment, these personal home videos, or videos taken by security monitoring equi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/20G06T5/00H04N5/14
Inventor 胡蓉施荣杰沈一帆陈文斌
Owner FUDAN UNIV
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