An Image Enhancement Method Based on Sub-row Driven Grayscale Modulation Display System

A technology of grayscale modulation and display system, applied in the field of image processing, can solve the problem of not reaching high-fidelity and clear video images, and achieve the effect of enriching colors and enhancing images

Active Publication Date: 2019-04-05
FUZHOU UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the image quality problem caused by the loss of data in the low-grayscale part has been improved to a certain extent, the improvement of image quality by only introducing the error diffusion method to reduce the number of data bits is far from achieving high-fidelity and clear video images.

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  • An Image Enhancement Method Based on Sub-row Driven Grayscale Modulation Display System
  • An Image Enhancement Method Based on Sub-row Driven Grayscale Modulation Display System
  • An Image Enhancement Method Based on Sub-row Driven Grayscale Modulation Display System

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0026] This embodiment provides an image enhancement method based on a sub-row driven grayscale modulation display system, such as figure 1 shown, including the following steps:

[0027] Step S1: Perform grayscale transformation on the target image, convert the grayscale of the target image into an 8-bit binary image, and calculate the number of pixels corresponding to each grayscale value;

[0028] Step S2: smoothing and filtering the distribution map of the gray value of the target image corresponding to the number of pixels, and finding the gray value corresponding to the minimum value of the number of pixels in the target image;

[0029] Step S3: Combining the minimum value and the maximum gray value and the minimum gray value of the target image into a set of minimum value arrays;

[0030] Step S4: Divide the target image into gray-scale regions ...

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Abstract

The invention relates to an image enhancement method based on a sub-line driving gray-scale modulation display system. The method comprises: after a target image is subjected to gray-scale mapping, the number of pixels of each gray-scale value is calculated; according to the gray-scale value corresponding to the minimum value of pixel numbers, the target image is divided into several pixel sets; the total pixel number of each pixel set is calculated and gray-scale stretching areas are divided with the total pixel numbers as weights, the pixel gray-scale value corresponding to each pixel is calculated in each gray-scale stretching area, so that the image enhancement effect is achieved.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to an image enhancement method based on a sub-row driven grayscale modulation display system. Background technique [0002] The Chinese patent with the application number 200810071631.7 discloses an image grayscale modulation method and driving circuit applied to large-screen field emission displays, and proposes a new sub-row grayscale modulation method that divides a row of image data according to the data bit weight The method of generating several sub-row time pulse widths for driving, such as sending data in 8 sub-rows, when 8bit data is displayed in 256-level gray scale, the low gray-scale part (ie, the first 3 sub-rows) is due to the display time being shorter than the data transmission time Less, resulting in the loss of data due to insufficient display time in the low gray scale part, so the error diffusion method is introduced to reduce the bit of data, and the su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/00
CPCG06T5/002
Inventor 林志贤郭太良叶芸林金堂张永爱林珊玲
Owner FUZHOU UNIV
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