A method for making digital micromirror dimming template based on grayscale

A technology of digital micromirror and manufacturing method, which is applied in the fields of optics, optical components, and material analysis through optical means, which can solve problems such as time-consuming, and achieve the effects of strong adaptability, high reliability, and strong visibility

Active Publication Date: 2022-03-22
SICHUAN INNOVATION RES INST OF TIANJIN UNIV
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AI Technical Summary

Problems solved by technology

The current dimming template generation algorithm mainly updates the template through system dimming iteratively. The continuous import and update of the template takes a lot of time. Therefore, there is an urgent need for a more convenient, fast, and easy-to-operate dimming template generation algorithm to improve the system. Dimming efficiency

Method used

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  • A method for making digital micromirror dimming template based on grayscale
  • A method for making digital micromirror dimming template based on grayscale
  • A method for making digital micromirror dimming template based on grayscale

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Embodiment Construction

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] The gray-scale-based digital micromirror dimming template manufacturing method described in this embodiment is implemented based on a digital micromirror imaging system, such as figure 1 As shown, the system includes a camera CCD (1), a bidirectional telecentric lens (2), a total internal reflection prism TIR (3), a digital micromirror DMD (4), a double cemented achromatic lens (5), an object to be measured (6 ), processor (7).

[0025] In this embodiment, the surface of a high-brightness coin is imaged, and the final DMD dimming template is synthesized by dimming template patterns generated under different gray scales, so as to realize high dynamic range imaging of the coin surface.

[0026] Step 1, to the DMD controller in order k =1, 2, 3, 4, 5 and sequentially import 5 preliminary dimming templates with grayscale values ​​of 50, 100,...

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Abstract

A digital micromirror dimming template manufacturing method based on grayscale, which belongs to the field of high dynamic imaging of digital micromirror (DMD) cameras, solves the problem of low efficiency in making dimming templates through continuous dimming and iterative updates, and provides a A more convenient, fast, and easy-to-operate method for making a digital micromirror dimming template. The method of the present invention only needs to collect 5 images under different gray scales in advance, and by synthesizing the dimming template patterns generated under different gray scales, a dimming template with natural transition and strong visibility can be obtained, which is convenient to operate and saves time. The dimming efficiency of the DMD high dynamic range imaging system is improved; at the same time, it is proved that the method of the invention has strong adaptability and high reliability. This method is helpful to realize light intensity control in DMD high dynamic range imaging system.

Description

technical field [0001] The invention relates to the field of high dynamic imaging of digital micromirror (DMD) cameras, in particular to a method for manufacturing a digital micromirror dimming template based on gray scales. Background technique [0002] Dynamic range is one of the important performance parameters of photoelectric imaging devices, which can accurately reflect the brightness and contrast information of natural scenes. The detectable dynamic range of ordinary photoelectric imaging equipment is generally 48dB, which is difficult to meet the requirements of more than 100dB in deep space exploration and scientific imaging applications. Therefore, how to improve the dynamic range of the imaging system is one of the key issues to be solved by optical imaging equipment. With the development of spatial light modulation technology, the advantages of digital micromirror DMD as an advanced spatial light modulator in the field of high dynamic imaging have been confirmed...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/84G02B26/08
CPCG01N21/84G02B26/0833
Inventor 关小梅张福民牛斌
Owner SICHUAN INNOVATION RES INST OF TIANJIN UNIV
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