High dynamic range scene generation method, device and system

A high dynamic range and scene technology, applied in the field of image processing, can solve the mutual constraints between frame rate and dynamic range, and achieve the effect of solving the mutual constraints between frame rate and dynamic range and expanding the dynamic range
CN108965838BActive Publication Date: 2020-04-03CHANGCHUN UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHANGCHUN UNIV OF SCI & TECH
Publication Date
2020-04-03

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Abstract

The present application discloses a high dynamic range scene generation method, device and system. Wherein, the method includes: decomposing the N-bit grayscale image of the scene to be generated, to obtain N / 2 2-bit bit-plane images; based on the gray value of each pixel in each 2-bit bit-plane image, Perform frame decomposition processing on each 2-bit plane image to obtain 3 black and white images; according to the corresponding video signals of the three black and white images, the first lighting device, the second The incident light of the illuminating device and the third illuminating device is subjected to spatial light modulation, that is, three black and white images corresponding to each 2-bit plane image are displayed simultaneously, and each 2-bit plane image is generated by projection by superimposing the three black and white images; According to the timing of pulse width modulation, all 2-bit plane images are continuously projected by the above three DMDs to generate grayscale images of the scene to be generated. The present application solves the problem of frame rate and dynamic range constraints.
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Description

technical field

[0001] The present application relates to the field of image processing, in particular, to a method, device and system for generating high dynamic range scenes. Background technique

[0002] High dynamic range scene generation has always been a research focus in hardware-in-the-loop simulation projection systems. According to the display band of the generated scene, it can be divided into two categories: infrared scene generation and visible light scene generation. Infrared scene generation is mainly used for hardware-in-the-loop simulation tests of infrared imaging guided missiles, such as infrared target simulators. Visible light scene generation is mainly used to simulate the deep space environment to test the performance of space imaging systems, such as star simulators. At present, visible light scene generation devices mainly include Digital Micromirror Device (DMD) and Liquid Crystal on Silicon (LCoS). Both technologies can be used for infrared scene...

Claims

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