Dynamic regional backlight dimming method based on improved shuffled frog-leaping algorithm

A technology of shuffling frog jumping and dynamic dimming, applied in static indicators, instruments, etc., can solve problems such as optical crosstalk, and achieve the effect of reducing distortion, reducing energy consumption, and ensuring image display quality

Active Publication Date: 2017-11-10
TIANJIN UNIV
View PDF5 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Theoretically, the backlight module can make each pixel correspond to a backlight partition, that is, each pixel corresponds to a backlight LED light, but considering the cost, heat dissipation performance and other factors, in practical applications it is a A partition contains ...

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
  • Dynamic regional backlight dimming method based on improved shuffled frog-leaping algorithm
  • Dynamic regional backlight dimming method based on improved shuffled frog-leaping algorithm
  • Dynamic regional backlight dimming method based on improved shuffled frog-leaping algorithm

Examples

Experimental program
Comparison scheme
Effect test

example

[0097] Examples are given as follows:

[0098] When the backlight module is divided into 35 areas, and the backlight value of each area is an integer between 0 and 255, the best implementation of the present invention is as follows:

[0099] (1) Initialize parameters. The size of the solution vector is set to 50, the number of groups is 5, the energy consumption constraint is equal to the energy consumption value required for adjusting the brightness of the backlight by the average value method, and the maximum number of iterations in one cycle is Max iter =1500, the iteration termination condition of the algorithm within one cycle is 150 consecutive invalid iterations, the number of initial cycles cyc=0, the search interval radius R=90 in the current cycle, and the number of iterations iter=0 in the current cycle.

[0100] (2) Divide the image into the same 35 areas according to the division method of the backlight area, and calculate the average brightness of all pixels in ...

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 relates to a dynamic regional backlight dimming method based on an improved shuffled frog-leaping algorithm. On the basis of a image-brightness-based typical feature value, a dynamic regional backlight dimming problem is transformed into an optimization problem and an improved shuffled frog-leaping algorithm is used for solving the problem, so that one solution is found out among all partition brightness distribution solutions and thus an image after regional diming has the highest display quality under the circumstance that the certain energy consumption is not exceeded. One group of initial backlight brightness values is determined by using an image-brightness-based feature parameter statistic method; and optimum backlight brightness values of all divided regions are calculated by using an improved shuffled frog-leaping algorithm to obtain an optimal divided-region backlight brightness distribution solution. With the determined regional backlight brightness distribution solution, distortion of an image after dimming is reduced and thus the image display quality is ensured; the energy consumption is reduced to the great extent; and the mutual restriction relationship between the image display quality and the energy consumption is balanced.

Description

technical field [0001] The invention relates to a method for dynamic dimming of an area backlight. In particular, it relates to an area backlight dynamic dimming method based on an improved shuffle leapfrog algorithm. Background technique [0002] 1. The brightness adjustment problem of the area backlight [0003] The backlight module is the main energy-consuming component of the Liquid Crystal Display (LCD), and almost 90% of the electricity can be consumed on the backlight panel. The traditional LCD backlight uses a surface light source with constant brightness. The brightness of the backlight cannot be dynamically changed according to the content of the displayed image. Even when displaying a dark scene image, the brightness of the backlight is always on, which leads to a large waste of energy consumption. At the same time, this backlight mode causes severe light leakage in the liquid crystal and limits the improvement of the contrast of the LCD, which leads to low cont...

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): G09G3/34G09G3/36
CPCG09G3/342G09G3/36G09G2320/0626
Inventor 张涛巫红英赵鑫
Owner TIANJIN UNIV
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