High-dynamic-range image dual-screen display method based on color space switching

A technology of color space conversion and high dynamic range, which is applied to static indicators, cathode ray tube indicators, brightness and chrominance signal processing circuits, etc., and can solve problems such as low brightness, difficulty in improving refresh rate, and bulky LCD-projector solutions and other issues, to achieve the effect of reducing the degree of color cast, improving display capabilities, and enriching details

Active Publication Date: 2014-04-23
FUZHOU UNIV
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Problems solved by technology

The LCD-projector solution is bulky and cannot be widely used by the public
The LCD-LED solution has limitations such as large LED particles and easy interference between pixels
Gabriele Guarnieri and others proposed a dual liquid crystal display system with LCD-LCD structure, but the system has low brightness and requires high-brightness backlight support, and it is difficult to increase the refresh rate
Patrick Ledda and others proposed a dual-screen display system with LCD-Optics structure, but the system is bulky and has limited viewing angles

Method used

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  • High-dynamic-range image dual-screen display method based on color space switching

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Embodiment Construction

[0038] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below through specific embodiments and related drawings.

[0039] Such as figure 1 As shown, the present invention provides a high dynamic range image dual-screen display method based on color space conversion, comprising the following steps:

[0040] S1: convert high dynamic range image RGBE (such as Figure 2a Shown) calculate and convert to RGB space image;

[0041] S2: convert the RGB space image in step S01 into an HSL space image (such as Figure 2b shown), to complete the separation of brightness and hue;

[0042] S3: performing a separate adaptive logarithmic mapping on the brightness L of the HSL space image in step S02, completing the brightness compression processing, and at the same time, correspondingly enhancing the saturation S;

[0043] S4: Convert the HSL space image in step S03 to an RGB space im...

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Abstract

The invention relates to a high-dynamic-range image dual-screen display method based on color space switching. The method is characterized by comprising the following steps: S1, calculating a high-dynamic-range image and converting into an RGB (Red Green Blue) space image; S2, converting the RGB space image in the step S1 into an HSL (High Speed Logic) space image, and finishing the separation of brightness and tone; S3, performing separate self-adaptive logarithm mapping on the brightness L of the HSL space image in the step S2, finishing compression of the brightness, and enhancing the saturation S; S4, converting the HSL space image in the step S3 into an RGB space image; S5, performing front-back panel image segmentation on the RGB space image in the step S4; S6, performing dual-screen segmented display of front and back panel images generated in the step S5 on an LCD-FED (Liquid Crystal Display-Field Emission Display) dual-screen display screen. By adopting the high-dynamic-range image dual-screen display method, the problem of color shift is solved, and the detail expression capability is enhanced greatly.

Description

technical field [0001] The invention relates to the field of high dynamic image processing and dual-screen display of high dynamic range images, in particular to a method for dual-screen display of high dynamic range images based on color space conversion. Background technique [0002] In recent years, there have been more and more researches on high dynamic range images, which are images that can restore the brightness range of a real scene. Its brightness ranges from pitch-black nights to sun-battered days, with a dynamic range of even more than 1010:1. Compared with the large range of brightness of high dynamic range images, the dynamic range of current mainstream display devices is very small. Today, the dynamic range of mainstream display devices is 400:1 to 600:1, and the dynamic range of some display devices can reach 1500. : 1, even with this, it is still far from meeting the requirements of displaying high dynamic range images. To solve this problem, on the one ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/78G09G5/02G09G5/10
Inventor 郭太良徐胜姚剑敏林金堂林志贤叶芸
Owner FUZHOU UNIV
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