Digital video image stabilization method based on multi-resolution block matching and PI (Portion Integration) control

A multi-resolution, digital video technology, applied in the direction of TV, color TV, image communication, etc., can solve problems such as difficult to estimate the effect, easy to fall into local minimum points, etc.

Inactive Publication Date: 2012-09-19
DALIAN UNIV OF TECH
View PDF5 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the fast block matching methods in the traditional sense have the disadvantage of being easily trapped in local minimum points.
In addition, for...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Digital video image stabilization method based on multi-resolution block matching and PI (Portion Integration) control
  • Digital video image stabilization method based on multi-resolution block matching and PI (Portion Integration) control
  • Digital video image stabilization method based on multi-resolution block matching and PI (Portion Integration) control

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0063] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0064] The digital video image stabilization method based on multi-resolution block matching and proportional integral control of the present invention comprises the following steps:

[0065] Step 100: Establish a motion model between frames: select the Similarity motion model to describe the motion of the image sequence to reflect the translation, rotation around the optical axis, and zoom motion between frames of the image sequence. The motion model is:

[0066] (1)

[0067] Among them, s represents the zoom factor of the camera, Represents the rotation angle of the image between frames, d x 、d y represent the offsets in the horizontal and vertical directions, respectively;

[0068] For security monitoring or hand-held imaging with small jitters, the deflection angle between frames of the image sequence small, it can be ap...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a digital video image stabilization method based on multi-resolution block matching and PI (Portion Integration) control. The digital video image stabilization method comprises the following steps of: obtaining a motion vector of a selected block through an improved diamond search algorithm, and obtaining a motion parameter of an overall motion vector by using least square estimation; then substituting the motion vector in a proportional-integral controller, namely a compensation unit of a core, so as to obtain a motion compensation vector; and further carrying out motion compensation on a fluctuation video sequence. With the adoption of the digital video image stabilization method disclosed by the invention, the fluctuation video sequence is subjected to fluctuation removal, so that the accuracy of the traditional diamond rapid search algorithm is improved, and the watching quality of a video is further improved. According to the acceleration of a chasing motion, the digital video image stabilization method can better keep a cashing component of a subjective motion and a subjective cashing motion of a photographer, so that the more accurate motion vector can be obtained through the estimation; the smaller stable state error is generated; and the fluctuation phenomena including translation, rotation, amplification and the like can be compensated according to demands.

Description

technical field [0001] The invention particularly relates to a digital video image stabilization method based on multi-resolution block matching and PI control. Background technique [0002] Digital Image Stabilization (DIS) is a new technology that integrates electronics, optics, computer and image processing to stabilize video image sequences. It has the advantages of high precision, strong real-time performance, small size, cheap price and low power consumption, etc., and has broad application prospects. With the popularity of video equipment and the wide application of video technology, the research on digital image stabilization technology has become one of the hot spots in the field of image processing. [0003] A typical digital image stabilization system includes a motion estimation unit and a motion compensation unit. The function of the motion estimation unit is to obtain the correct camera motion parameters, retain the artificial tracking component, and separate...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H04N5/21H04N5/14H04N5/232
Inventor 宋继飞高宇洋孙傲楠马晓红
Owner DALIAN UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap