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

High dynamic range image fusion method used for overcoming influence of dynamic problem

A high dynamic range, image fusion technology, applied in the field of image processing, can solve problems such as calibration, difficult image registration, and color cast in high dynamic range image fusion, achieve the requirement of eliminating absolute spatial consistency, improve computational efficiency, and reduce computational amount of effect

Active Publication Date: 2016-09-07
PLA PEOPLES LIBERATION ARMY OF CHINA STRATEGIC SUPPORT FORCE AEROSPACE ENG UNIV
View PDF5 Cites 30 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The algorithm requires accurate registration of multi-exposure image sequences of static scenes as input to calibrate the camera response function. When the shooting scene is affected by dynamic problems or the camera shakes, it will bring great difficulties to image registration, so that it cannot be performed. Camera response function calibration, that is, the algorithm cannot overcome the impact of dynamic problems; moreover, the high dynamic range image fusion obtained by using this algorithm has color cast, and it is necessary to combine the corresponding color correction algorithm to white balance the output result

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
  • High dynamic range image fusion method used for overcoming influence of dynamic problem
  • High dynamic range image fusion method used for overcoming influence of dynamic problem
  • High dynamic range image fusion method used for overcoming influence of dynamic problem

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0109] The working principle and process of the method of the present invention will be further described below with a specific example.

[0110] (1) Obtain the target multi-exposure image sequence. A group of multi-exposure sequence images of the target with imaging system shake obtained by Canon D90 camera are as follows: figure 2 As shown, the impact of imaging system shaking on images does not exceed five pixels. figure 2 middle, figure 2 The exposure time of (a) is 1 / 10s, figure 2 The exposure time of (b) is 1 / 5s, figure 2 The exposure time of (c) is 1 / 2s, figure 2 The exposure time of (d) is 0.77s, figure 2 The exposure time of (e) is 2s, figure 2 The exposure time of (f) is 5s, figure 2 The exposure time of (g) is 8s, figure 2 The exposure time of (h) is 13s.

[0111] (2) Decompose the color image. Decompose the obtained target multi-exposure color image according to the R, G, and B color channels to obtain the brightness information of each color ch...

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 high dynamic range image fusion method used for overcoming influence of a dynamic problem for overcoming a problem of high dynamic range image fusion which is influenced by dynamism of a shot scene and shake of an imaging system. A method for calibrating a camera response function based on a brightness mapping function is adopted to overcome the influence of the dynamic problem on calibration of the camera response function, and then a total least square method is combined to introduce a correction matrix to carry out combined compensation on an error, so that the camera response function of the imaging system can be obtained without high-precision image registration; through analyzing a feature selection weighting function of a multi-exposure image sequence, the calibrated camera response function is combined to construct a high dynamic range image weight fusion function, and the input multi-exposure image sequence is utilized to obtain a high dynamic range image fusion effect. The method can overcome difficulties which are brought to calibration of the camera response function by the dynamic problem, so that the adaptability of a multi-exposure high dynamic range fusion technology is improved.

Description

technical field [0001] The invention belongs to the technical field of image processing, and relates to a high dynamic range image fusion method suitable for solving the impact of shooting scene dynamics and shaking of an imaging system. Background technique [0002] In real environments and battlefield environments, scenes with a large dynamic range often appear, that is, brighter and darker information appear simultaneously in the same field of view. If the dynamic range of the shooting scene exceeds the dynamic range of the imaging device, it will cause over-saturation or under-saturation of the collected image, thereby affecting the collection and recognition of target information. For example, due to the bright tail flame of the launched missile, the collected image will be saturated, so that the projectile body cannot be seen clearly, which will affect the analysis of the target. Therefore, in order to facilitate target observation, higher requirements are put forward...

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): H04N5/235
CPCH04N23/741
Inventor 都琳孙华燕张廷华王帅徐韬祜李迎春梁丹华高宇轩
Owner PLA PEOPLES LIBERATION ARMY OF CHINA STRATEGIC SUPPORT FORCE AEROSPACE ENG UNIV
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