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High dynamic range imaging method for ingaas shortwave infrared camera based on correlated double sampling

A high dynamic range, short-wave infrared technology, applied in the field of infrared imaging, can solve problems such as not being developed

Active Publication Date: 2021-01-01
SHANDONG UNIV
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Problems solved by technology

Relatively speaking, HDR imaging technology in the short-wave infrared field is basically blank, and research in this area has not yet been carried out.

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  • High dynamic range imaging method for ingaas shortwave infrared camera based on correlated double sampling
  • High dynamic range imaging method for ingaas shortwave infrared camera based on correlated double sampling

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Embodiment Construction

[0029]In order to facilitate the understanding of the present invention, the present invention will be described in more detail below with reference to the drawings and specific embodiments. The drawings show preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0030]Implementation examplefigure 2As shown, in the high dynamic range imaging method of the InGaAs short-wave infrared camera based on correlated double sampling of this embodiment, the required equipment includes a short-wave infrared integrating sphere as a uniformly adjustable light source and an InGaAs short-wave infrared camera. The short-wave infrared integrating sphere emits uniform light with a spectrum of 800nm-2500n...

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Abstract

The invention belongs to the technical field of infrared imaging, and relates to a high dynamic range imaging method of a short-wave infrared camera. A high dynamic range imaging method for an InGaAs shortwave infrared camera based on correlated double sampling, including: setting the number of digits of raw data and HDR data collected by the InGaAs shortwave infrared camera, determining the HDR magnification hdr_mul_factor; determining the HDR threshold hdr_th; determining the background of the camera Response bg; set integration time T 1 and T 2 , according to the integration time and the HDR threshold hdr_th, determine whether the pixel enters the HDR mode; calculate the response of the pixel, read the responses of all pixels, and complete the imaging. The method of the present invention realizes HDR imaging in the short-wave infrared band based on the correlated double-sampling function of the InGaAs short-wave infrared camera, which is efficient and easy to implement, and can obtain images with higher image brightness and contrast range, and better reflect the vision in the real environment Effect.

Description

Technical field[0001]The invention belongs to the technical field of infrared imaging, and relates to a high dynamic range imaging method of a short-wave infrared camera.Background technique[0002]In recent years, the rapid development of InGaAs material growth and focal plane preparation technology has led to the advancement of shortwave infrared imaging technology based on InGaAs materials. Short-wave infrared cameras based on InGaAs materials have the advantages of working at room temperature, high detection rate, and good uniformity. They have been widely used in military, medical, industrial, agricultural and other fields and are widely favored. Short-wave infrared imaging based on InGaAs material has become a research hotspot in the current imaging field. Compared with medium and long waves, the imaged scene has a clearer outline and high recognition; compared with visible light, it is less affected by atmospheric condensation and has good atmospheric transmission. , It has a g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/235H04N5/33
CPCH04N5/33H04N23/741
Inventor 费宬李永富刘俊良刘兆军赵显方家熊
Owner SHANDONG UNIV
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