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A Fast and Efficient Video Stabilization Method

A stable and efficient video technology, applied in the field of image processing, can solve the problems affecting the speed of motion estimation, long processing time, difficult to meet the real-time processing system, etc., and achieve the effect of strong real-time performance, good calculation accuracy and low complexity

Active Publication Date: 2019-03-08
湖南优象科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, too long matching time between feature point extraction and descriptors will seriously affect the speed of motion estimation, and then the motion estimation vector is separated by motion filtering, resulting in a long processing time of the whole system, which is difficult to meet the needs of some real-time processing systems

Method used

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  • A Fast and Efficient Video Stabilization Method
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  • A Fast and Efficient Video Stabilization Method

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Embodiment Construction

[0044] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0045] Theoretically, when the motion of the carrier is reflected on the video image, the global motion that occurs between two consecutive frames can be decomposed into overall translation, rotation around a fixed point, etc. So for a video sequence image {P n (x, y)|n=1,2,...N}, the present invention adopts following model to represent the mapping relation of adjacent two frame images:

[0046]

[0047] where (x n ,y n ) represents the position coordinates of a pixel in the nth frame, (x n+1 ,y n+1 ) is the position coordinate of the pixel point corresponding to the n+1th frame, θ n is the rotation angle, (Tx n , Ty n ) is the motion compensation parameter, and there are three parameters in this model (θ n ,Tx n , Ty n )...

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Abstract

The present invention proposes a fast and efficient video stabilization method. An improved particle filter method is used to accurately estimate the parameters of the motion model. When operating each particle, three pairs of images are used for calculation, so each particle More information can be improved, and the method of the invention can still achieve good calculation accuracy without requiring too many particles. The method proposed by the invention has low complexity and strong real-time performance, can effectively stabilize and compensate video, and is suitable for vehicle-mounted, ship-mounted, and airborne-mounted camera systems.

Description

technical field [0001] The invention belongs to the technical field of image processing and relates to image stabilization processing, in particular to a fast and efficient video stabilization method. Background technique [0002] In recent years, with the popularity of camera products such as camera phones, video cameras, and driving recorders in the field of civilian consumer electronics, people are increasingly using video to meet various needs in life and work. However, whether it is a handheld shooting device or other mounted camera equipment, the captured images are often unstable and blurred due to the shaking of the carrier. This unstable video will make the observer feel tired, affecting the observer's judgment and observation accuracy. How to convert these unstable video signals into stable high-quality video image sequences has important theoretical significance and practical value. [0003] Image stabilization technology was created to meet the needs of the abo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/14H04N5/21H04N5/232
CPCH04N5/144H04N5/21H04N23/681
Inventor 罗文峰
Owner 湖南优象科技有限公司