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Method, device and system for generating high dynamic range scene

A high dynamic range and scene technology, applied in the field of image processing, can solve the problem of mutual restriction between frame rate and dynamic range, and achieve the effect of solving the mutual restriction of frame frequency and dynamic range and expanding the dynamic range.

Active Publication Date: 2018-12-07
CHANGCHUN UNIV OF SCI & TECH
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Problems solved by technology

[0013] The embodiment of the present application provides a high dynamic range scene generation method, device and system, to at least solve the technical problem of mutual constraints between frame rate and dynamic range in the existing DMD-based technology for expanding the dynamic range of generated scenes

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  • Method, device and system for generating high dynamic range scene

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Embodiment Construction

[0030] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0031] It should be noted that the terms "first" and "second" in the description and claims of the present application and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such...

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Abstract

The application discloses a method, a device and a system for generating a high dynamic range scene. The method includes the following steps: bit plane decomposition is carried out on an N-bit gray image of a 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, frame decomposition is carried out on each 2-bit bit plane image to obtain three black-and-white images; a first DMD, a second DMD and a third DMD carry out spatial light modulation on the incident light of a first illumination device, a second illumination device and a third illumination device respectively according to the video signals corresponding to the three black-and-white images, namely, the three black-and-white images corresponding to each 2-bit bit plane image are displayed simultaneously, and the three black-and-white images are superimposed to generate each 2-bit bit plane image by projection; the three DMDs are used to continuously projectall the 2-bit bit plane images according to the time sequence of pulse width modulation, so as to generate a gray image of the scene to be generated. The problem that the frame frequency and the dynamic range restrict each other is solved.

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...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/31
CPCH04N9/3102H04N9/3138H04N9/3141H04N9/3179
Inventor 潘越乔杨徐熙平
Owner CHANGCHUN UNIV OF SCI & TECH
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