Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Highlight removing method of double-edge-preserving filter

A filter and light technology, applied in the field of image processing, can solve problems such as algorithm errors, avoid re-detection and missing detection, achieve stable and reliable detection results, and quickly and efficiently remove highlights

Pending Publication Date: 2020-08-21
ANHUI UNIVERSITY
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since many algorithms in computer vision and object recognition assume that the scene contains only diffuse reflections, their algorithms will err in the presence of specular reflections

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
  • Highlight removing method of double-edge-preserving filter
  • Highlight removing method of double-edge-preserving filter
  • Highlight removing method of double-edge-preserving filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. 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.

[0012] According to the existing technology, the reflection component of any light can be divided into two components: diffuse reflection and specular reflection, and the image color observed at pixel x can be expressed as the following formula

[0013] I(x)=wd(x)P d (x)+w s (x)F s (x) (1)

[0014] Among them, I=[I r , I g , I b ],P d (x) and F s (x) are the diffuse reflection component and specular reflection component at pixel x, respectively, w d and w ...

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

According to a highlight removing method of the double-edge-preserving filter, double thresholds are used for replacing traditional single thresholds in highlight detection, so that the detection effect is more stable. Then, on the basis of a highlight detection algorithm, in combination with the principle of an MSF image, a new estimated maximum diffuse reflection chromaticity estimation value isprovided; the estimation value of the method enables the result to be closer to the real maximum diffuse reflection chromatic value. The process provides reliable data for effectively removing highlight; and finally, according to the characteristic that the maximum diffuse reflection chromaticity has local smoothing, a fast joint bilateral filter and a guide filter are used for smoothing the maximum chroma; the maximum diffuse reflection estimated value is used as a guide value, so that the maximum diffuse reflection value is quickly diffused and propagated in a neighborhood range, and finally, in order to reduce the influence of specular reflection on diffuse reflection, the maximum diffuse reflection chromaticity value is determined by selecting the maximum value in the three maximum chromaticity values, so that the purpose of removing highlight is achieved.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a method capable of effectively removing image highlights while retaining original image texture details. Background technique [0002] The two-color reflection model divides the reflection component of the image into a diffuse reflection component and a specular reflection component. For a wide variety of inhomogeneous materials, including plastics with uniform pigmentation, wood, ceramics, and other opaque nonconductors, reflection is a combination of diffuse and specular reflection, and the contribution of specular reflection can be well described by the two-color reflection model Important in fields including computer vision, object recognition, and image content editing. Since many algorithms in computer vision and object recognition assume that the scene contains only diffuse reflections, their algorithms will error out in the presence of specular reflections. Si...

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): G06T5/00G06T5/20
CPCG06T5/20G06T2207/10024G06T2207/20028G06T5/70
Inventor 徐超闪文章冯博
Owner ANHUI UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com