Method for acquiring RGB and infrared images by using conventional digital camera

A RGB image and digital camera technology, applied in the field of image processing, can solve the problem of single imaging equipment cost of near-infrared equipment, and achieve the effect of simple transformation

Inactive Publication Date: 2018-08-28
XIAN UNIV OF TECH
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[0004] The purpose of the present invention is to provide a method for obtaining RGB and infrared images using a traditi...

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  • Method for acquiring RGB and infrared images by using conventional digital camera
  • Method for acquiring RGB and infrared images by using conventional digital camera
  • Method for acquiring RGB and infrared images by using conventional digital camera

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Embodiment Construction

[0017] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] In traditional RGB digital cameras, the imaging sensor is a CCD or CMOS component. The photosensitive material used in this component is generally silicon. Since silicon materials are photosensitive to both visible light and near-infrared NIR bands, traditional RGB digital cameras are sensitive to NIR bands. Shielding to eliminate interference in the visible light band. On the hardware, the RGB digital camera filters the NIR band from 780nm to 1100nm by placing an interference filter. This filter is often called a hot mirror.

[0019] In the method of the present invention, the precondition is to remove the hot mirror in the common RGB camera, so that both the visible light and the NIR bands enter the CCD for photosensitive, thereby forming the mixed imaging of visible light and NIR.

[0020] Digital cameras generally adopt the Bayer ...

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Abstract

The invention discloses a method for acquiring RGB and infrared images by using a conventional digital camera. The method comprises: step one, calculating an independent G channel value and an independent NIR channel value by using data at a G position after hot mirror removing in a Bayer array mode; step two, calculating G channel value and NIR channel values of all pixel positions by using an interpolation method; and step three, calculating an R channel value and a B channel value of each pixel position. Therefore, R, G, B, and NIR channel values of all pixel positions are obtained finallyand thus a complete RGB image and NIR image. The method is simple and the image effect is good.

Description

technical field [0001] The invention belongs to the technical field of image processing, and relates to a method for acquiring RGB and infrared images by using a traditional digital camera. Background technique [0002] Near Infrared (NIR) is an electromagnetic wave between visible light and mid-infrared light. According to the definition of ASTM (American Society for Testing and Materials Testing), it refers to electromagnetic waves with a wavelength in the range of 780nm to 2526nm. The region is divided into two regions: near-infrared short-wave (780nm-1100nm) and near-infrared long-wave (1100-2526nm). In the traditional infrared imaging process, the near-infrared short wave of 780nm ~ 1100nm is the most widely used, and has been widely used in culture and art, judicial public security, medical biology, remote sensing, astronomy, agriculture and forestry, industry and scientific research. [0003] Most of the near-infrared spectrometers or cameras currently on the market ...

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Application Information

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IPC IPC(8): G06T7/90
CPCG06T7/90G06T2207/10024G06T2207/10048
Inventor 孙帮勇
Owner XIAN UNIV OF TECH
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