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

A Brightness Enhancement Method for Dark Images

A brightness enhancement and dark image technology, applied in the field of image processing, can solve the problems of limited brightness enhancement, unsatisfactory effect, no special dark image enhancement, etc., to achieve the effect of improving image brightness

Active Publication Date: 2021-01-12
NANJING AUDIT UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The existing algorithms are all general image enhancement methods, and no special dark image enhancement is involved. When the existing algorithm is used to enhance dark images, the brightness improvement is limited, and satisfactory results cannot always be achieved.

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
  • A Brightness Enhancement Method for Dark Images
  • A Brightness Enhancement Method for Dark Images
  • A Brightness Enhancement Method for Dark Images

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0043] The technical solutions provided by the present invention will be described in detail below in conjunction with specific examples. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, the steps shown in the flow diagrams of the figures may be performed in a computer system, such as a set of computer-executable instructions, and, although a logical order is shown in the flow diagrams, in some cases, the sequence may be different. The steps shown or described are performed in the order herein.

[0044] The brightness enhancement method of the dark image provided by the present invention, such as Figure 5 shown, including the following steps:

[0045] Step 1, decompose the input darker image according to HSV, and divide it into hue (H), saturation (S) and brightness (V);

[0046] Step 2, the brightness value of each pixel in the bri...

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 brightness enhancement method for dark images, which includes the following steps: decompose the input darker image according to HSV into hue H, saturation S and brightness V; calculate the brightness of each pixel point in the brightness V component of the image The mean value of X is M; in the input image brightness interval t 1 ,t 2 And the output image brightness interval T 1 ,T 2 Each pixel is enhanced separately, and the V component of the enhanced bright image is fused with the H and S components of the original image to obtain a brightness-enhanced image. The image enhancement method provided by the present invention can enhance the brightness of dark images, is suitable for processing images acquired at night or under other conditions with insufficient brightness, significantly improves the image brightness, and achieves a satisfactory brightness improvement effect. The invention can be applied to scenes such as taking photos with mobile phones at night and enhancing the PS brightness of pictures.

Description

technical field [0001] The invention belongs to the technical field of image processing, and relates to an image enhancement method, in particular to a brightness enhancement method of a dark image. Background technique [0002] The image enhancement algorithm is used to enhance the useful information in the image, and its purpose is to improve the visual effect of the image. At present, commonly used algorithms for image enhancement include: histogram equalization, histogram regulation, image enhancement algorithm based on physical model, image enhancement algorithm based on partial differential equation and variation, and image enhancement algorithm in change domain, etc. With the development of technology, Algorithms are also constantly being improved. [0003] Such as the classic algorithm article of image enhancement: A Histogram Modification Framework and ItsApplication for Image Contrast Enhancement Arici, (T.; Dikbas, S.; Altunbasak, Y. Image Processing, IEEE Transa...

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 Patents(China)
IPC IPC(8): G06T5/00
CPCG06T5/92
Inventor 杨章静张辉张凡龙
Owner NANJING AUDIT UNIV