Unlock instant, AI-driven research and patent intelligence for your innovation.

Terahertz and visible light image registration method and device based on contour feature points

A contour feature and image registration technology, which is applied in image enhancement, image analysis, image data processing, etc., can solve the problems of not meeting real-time requirements, slow speed, unsatisfactory heterogeneous image registration effect, etc. quasi-difficult effect

Pending Publication Date: 2021-02-19
SHANGHAI HENGLIN OPTIC ELECTRIC CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the registration effect of heterogeneous images is still not ideal, especially for images with large differences between terahertz and visible light, and the speed is relatively slow, which cannot meet the real-time requirements

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
  • Terahertz and visible light image registration method and device based on contour feature points
  • Terahertz and visible light image registration method and device based on contour feature points
  • Terahertz and visible light image registration method and device based on contour feature points

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. Note that the aspects described below in conjunction with the drawings and specific embodiments are only exemplary, and should not be construed as limiting the protection scope of the present invention.

[0040] Such as Figure 10 As shown, the embodiment of the present application provides a method for real-time registration and information fusion of terahertz and visible light images, including the following steps:

[0041] S1. Extracting contour information of terahertz and visible light images;

[0042] Specifically, there is a significant difference between the background and the foreground of the terahertz image, and the background can be removed by using adaptive binarization (such as OTSU), and it can be obtained figure 1 The effect shown. Visible light image contour extraction uses yolact++ deep learning network for human body segme...

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 terahertz and visible light image registration method and device based on contour feature points. The method comprises the following steps: S1, extracting contour informationof terahertz and visible light images; S2, processing the contour image; S3, extracting contour feature points and describing the feature points; S4, performing feature point matching, registration parameter calculation and image registration; S5, judging whether correction is needed or not, if so, performing correction by utilizing a supervised descent method and then entering the next step, andif not, directly entering the next step; S6, fusing the terahertz image and the visible light image. According to the method, the contour feature points are adopted for matching, registration difficulty caused by image difference can be reduced, fusion of visible light and terahertz images is achieved, and therefore people carrying hidden objects can be conveniently recognized under the conditionthat the number of examinees is large.

Description

technical field [0001] The invention relates to the field of security inspection and protection, in particular to a method and device for terahertz and visible light image registration based on contour feature points. Background technique [0002] The information obtained by a single sensor is often relatively simple, and in most cases it cannot meet the actual needs, so the multi-sensor fusion scheme has a better effect. [0003] The same is true for terahertz security detectors. The concealed objects carried by the inspected person can be detected from the terahertz image. However, due to the imaging characteristics of the terahertz image, the appearance characteristics of the inspected person are seriously lost. Although the visible light image is not easy to detect Hidden objects, but contain rich appearance features, if the hidden object information of the terahertz image is fused with the appearance information of the visible light image, it will make the applicability...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/50G06T5/00G06T7/136G06T7/194G06T7/33
CPCG06T5/50G06T7/194G06T7/33G06T7/136G06T2207/20221G06T5/70
Inventor 罗贵友俞旭辉侯丽伟谢巍刘仕望孙义兴侯树海
Owner SHANGHAI HENGLIN OPTIC ELECTRIC CO LTD