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High-dynamic contrast image display method and device based on partition backlight

一种图像显示装置、图像显示的技术，应用在图像处理领域，能够解决LCD分区数量无法做到像素级别、低分辨率显示图像等问题，达到最优效果呈现的效果

Active Publication Date: 2018-09-21
WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] However, compared with self-luminous OLEDs, the number of LCD partitions cannot reach the pixel level, and can only be divided into limited partitions. From the perspective of spatial resolution, LCD pixels provide high-spatial-resolution images, while partitioned backlights provide low-resolution displays. image

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  • High-dynamic contrast image display method and device based on partition backlight
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  • High-dynamic contrast image display method and device based on partition backlight

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Embodiment Construction

[0032] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0033] ginseng figure 2 As shown, the present invention discloses a high dynamic contrast image display method based on partition backlight, which specifically includes:

[0034] S1. Obtain the brightness information Lin(x, y) of any pixel of the image;

[0035] S2. Obtain the low-frequency illumination signal Lum(x, y) of any pixel ...

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Abstract

The invention discloses a high-dynamic contrast image display method and device based on partition backlight. The high-dynamic contrast image display method based on partition backlight includes the steps: S1, acquiring the luminance information of any pixels of an image; S2, acquiring a low frequency irradiation signal of any pixels through Gauss filtering, and decomposing the luminance information of any pixels into the product of a high frequency reflection signal and the low frequency irradiation signal; S3, according to space division of partition backlight, dividing the low frequency irradiation signal into M*N identical subareas; S4, for any subareas, calculating the maximum value of the low frequency irradiation signal of the current subarea; and S5, performing tone linear compression on the low frequency irradiation signal in the above subareas. The high-dynamic contrast image display method based on partition backlight performs tone linear compression on the low frequency irradiation signal according to the luminance range which can be covered by the practical backlight, so as to perform contrast space adaptation in the luminance range of the backlight, at the same time,preserves the spatial details corresponding to the high frequency reflection signal, and can show the optimal effect of the high-dynamic contrast image.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a high dynamic contrast image display method and device based on partitioned backlights. Background technique [0002] The core of display technology is to reproduce the visual cognition of the human eye to the natural world. Currently, mainstream display technologies include LCD (Liquid Crystal Display, LCD) and OLED (Organic Light-Emitting Diode, OLED). Still has obvious advantages, and OLED technology, as a technology that started late, still faces problems such as high cost and limited lifespan, but with the advancement of technology and the improvement of supply chain, OLED technology has gradually narrowed the distance from LCD , At the same time, it has the advantages of high color gamut and high contrast. At the same time, LCD technology is also constantly improving to cope with the competition of OLED technology. The adoption of RG phosphor and quantum dot tech...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/34G09G3/36
CPCG09G3/3406G09G3/3607G09G2320/062G09G3/3473G09G2360/16G09G2320/066G09G3/36G09G3/3426G09G2320/0646
Inventor 查国伟
Owner WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD