Rapid image registration method based on sub-image corner features

A corner feature and image registration technology, which is applied in image analysis, image data processing, special data processing applications, etc., can solve problems such as difficult implementation, high algorithm complexity, and poor real-time performance, and achieve the requirement of avoiding redundancy. Effect of inverse operation, improvement of precision and real-time performance, and improvement of accuracy

Inactive Publication Date: 2013-09-18
BEIJING INSTITUTE OF TECHNOLOGYGY
View PDF2 Cites 41 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method involves time-consuming steps such as correlation coefficient calculation, wavelet coefficient subgraph...

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
  • Rapid image registration method based on sub-image corner features
  • Rapid image registration method based on sub-image corner features
  • Rapid image registration method based on sub-image corner features

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0038] First, it is assumed that the distortion model between images is an affine transformation, and its mathematical expression is as follows:

[0039] x i ′ y i ′ = s cos θ - sin θ sin θ cos θ * ...

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 rapid image registration method based on sub-image corner features. The method includes the specific steps: firstly, selecting a reference sub-image and a to-be-registered sub-image, selecting one sub-image from a reference image as the reference sub-image, and selecting one sub-image with the same coordinate space as the reference sub-image from a to-be-registered image as the to-be-registered sub-image; secondly, extracting corners of the reference sub-image and the reference sub-image; thirdly, performing feature description on the corners extracted from the reference sub-image and the reference sub-image to obtain a feature vector of each corner; fourthly, performing similarity measurement and feature matching on the feature vectors of the corners on the reference sub-image and the reference sub-image to obtain K matching point pairs; and fifthly, adopting a least square method to compute a transformation matrix H between the reference image and the to-be-registered image based on the K matching point pairs, and registering the to-be-registered image onto the reference image based on the transformation matrix H. By the method, the requirement for image matching precision can be met, and image matching speed is increased greatly.

Description

technical field [0001] The invention belongs to the technical field of image registration, and in particular relates to a fast image registration method based on sub-image corner features. Background technique [0002] The application of image registration is very extensive, such as pattern recognition, automatic navigation, medical diagnosis, computer vision and other fields. At present, a lot of research work has been carried out in the aspect of image registration, and many image registration methods have been proposed. At present, most of the researches on image registration focus on feature extraction, feature description, similarity measurement, comparison of multiple registration methods, etc., but less attention is paid to the real-time registration. [0003] Common registration methods can be divided into two categories: feature-based registration methods, such as Harris corner method, SIFT method, etc.; region-based registration methods, such as mutual information...

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): G06T7/00G06F17/30
Inventor 陈禾章学静马龙谢宜壮曾涛龙腾
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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