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

FPGA-based low-cache improved histogram equalization method and system

A technology of histogram equalization and histogram statistics, applied in image enhancement, image analysis, image data processing, etc., can solve the problems of image distortion details, noise amplification, loss, etc., achieve less resource consumption, fast operation and processing speed, and avoid distortion effect

Active Publication Date: 2019-08-20
BEIJING INST OF REMOTE SENSING EQUIP
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a kind of FPGA-based low cache improved histogram equalization method, solve the problems such as noise amplification, image distortion and loss of details in previous methods

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
  • FPGA-based low-cache improved histogram equalization method and system
  • FPGA-based low-cache improved histogram equalization method and system
  • FPGA-based low-cache improved histogram equalization method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0058] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description and claims, the advantages and features of the present invention will be more clear. It should be noted that all the drawings are in very simplified form and inaccurate scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0059]It should be noted that, in order to clearly illustrate the content of the present invention, the present invention specifically cites multiple embodiments to further explain different implementation modes of the present invention, wherein the multiple embodiments are enumerated rather than exhaustive. In addition, for the sake of brevity, the content mentioned in the previous embodiment is often omitted in the latter embodiment, therefore, the content not mentioned in the later embodiment can refer...

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 an FPGA-based low-cache improved histogram equalization method and system. The method comprises the steps: a time division multiplexing module generates a time division multiplexing control signal; the cache control module generates time sequence control signals cached by the three histogram statistical branches; the histogram caching module caches histogram statistical results of the three branches; the histogram merging and accumulating module is used for reading, summing and accumulating histograms of three branches; the gray mapping module completes mapping from a histogram result to an appointed gray range; the grayscale mapping result caching module caches a grayscale mapping result; the histogram equalization output module completes histogram equalization result output. The method and system are applied to enhancement preprocessing of visible light and infrared images, the operation processing speed is high, the real-time performance is good, consumed resources are few, and the application value is very high.

Description

technical field [0001] The invention relates to an FPGA-based low cache improved histogram equalization method and system. Background technique [0002] Histogram equalization is a method of adjusting the image contrast by using the image histogram. It is usually used to increase the global contrast of the image, but it may also increase the contrast of background noise and reduce the contrast of useful signals, resulting in visual distortion of the image, especially in When processing infrared images, traditional histogram equalization methods are likely to cause problems such as image noise amplification and distortion. Contents of the invention [0003] The purpose of the present invention is to provide a low cache improved histogram equalization method based on FPGA, which solves problems such as noise amplification, image distortion and detail loss in previous methods. [0004] In view of this, the technical solution provided by the present invention is: a kind of FP...

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): G06T5/40G06T5/00G06T1/20
CPCG06T5/40G06T1/20G06T2207/10048G06T2207/10024G06T5/00
Inventor 吴志杰王群任小漩于明轩
Owner BEIJING INST OF REMOTE SENSING EQUIP