Method for processing footprint by multi-angle acquisition and integrated extraction

A multi-angle, footprint technology, applied in the field of footprint processing, can solve the problems of incomplete footprints, no integration, unclear footprints, etc., to eliminate the interference of background noise points, solve uneven lighting, and be friendly to human-computer interaction. Effect

Inactive Publication Date: 2017-01-25
DALIAN MARITIME UNIVERSITY
View PDF3 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The problems existing in the current footprint collection and extraction methods are: 1) The light source of the collection device is fixed on both sides of the chassis, which makes the collected footprint image unevenly illuminated, part of the information is lost, and the footprint is incomplete, which increases the difficulty of image extraction
2) The co

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
  • Method for processing footprint by multi-angle acquisition and integrated extraction
  • Method for processing footprint by multi-angle acquisition and integrated extraction
  • Method for processing footprint by multi-angle acquisition and integrated extraction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0033] figure 1 It is a flow chart of the footprint processing method of multi-angle collection and integrated extraction of the present invention, as figure 1 As shown, the method of this embodiment includes:

[0034] Step 101: Use the first light source to the sixth light source to illuminate the footprints in sequence and take images to obtai...

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 provides a method for processing footprint by multi-angle acquisition and integrated extraction. The flash light is used to obtain multiple footprint images with dark field illumination and background image with bright field illumination. High frequency information of each image in multiple footprint images is fused through wavelet fusion method to reduce the loss of footprint image details. Then the fused footprint images and background images can be handled respectively through the lightning correction method based on the block to solve uneven illumination. Subtraction can be made between the footprint image and background image after lightning correction, which can not only reduce noise but also extract the footprint texture, edge and other significant information more effectively, leading the effective area of footprint image more complete and the details more clearly.

Description

technical field [0001] The invention relates to the field of footprint processing, in particular to a footprint processing method of multi-angle acquisition and integrated extraction. Background technique [0002] At present, there are mainly three methods of footprint collection: (1) The suspect’s footprint collection based on pressure information. The main idea is: the collection device uses an elastic transparent film to image, and the light and dark features of the formed image reflect the pressure characteristics of the footprint. Analysis of the footprint by the technician provides pressure information. (2) The method of taking pictures of footprints on the spot with glancing light. The main idea of ​​this method is: using the illumination of glancing light, images with footprints can be photographed, and images of footprint-bearing objects without footprints can be captured at a fixed angle in the diffuse reflection lighting environment. , the two shots form two imag...

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): G06K9/60
CPCG06V10/20
Inventor 王新年王加丽朱悦
Owner DALIAN MARITIME UNIVERSITY
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