Imaging method and device for color image shot by black and white camera

Abstract

The invention relates to an imaging method which uses a black white camera to shoot color images and a device, the saturation regulatory factor value range is: 0.5-3; the luminance gain value range is: 0.5-3, under the condition is still relative to a camera in the environment without influence of external light or with influence of external light and during the shooting object is in a shot course of synthesizing color images, through a light source luminous intensity adjusting circuit, the luminance of a red LED lamp annular light source group, a green LED lamp annular light source group, a blue LED lamp annular light source group can be adjusted independently to adjust white balance; during shooting, each group of light source can be opened or closed independently through a light source luminescence sequencing circuit; when the light source is prepared, the camera is triggered to shoot images through a control circuit. By adopting the method and the structure, an imaging method and a device which use a black white camera to shoot color images with real color, without light filter, high lminous sensitivity for satisfying tip application are provided.

Description

【Technical field】 [0001] The invention relates to an imaging system, in particular to an imaging method and device for taking color images with a black and white camera. 【Background technique】 [0002] Ordinary color camera imaging uses Bayer Filter Pattern plus filters to realize the color image function. The pixel value uses its own pixel value and adjacent pixel values ​​​​to perform color interpolation algorithm to calculate the R, G, and B values ​​of each pixel. In this way, the adjacent pixel photoelectrons of the color camera are easy to overflow, causing color distortion, low color saturation, and must use a filter, which is not sensitive and flexible to light. [0003] The current 3CCD cameras basically overcome these defects, but the manufacturing cost of 3CCD is very high, which is not conducive to popularization and use. [0004] In addition, there is also a scheme to take color images through a black and white camera: emit red, green, and blue monochromatic li...

AI Technical Summary

Problems solved by technology

[0002] Ordinary color camera imaging uses Bayer Filter Pattern plus filters to realize the color image function. The pixel value uses its own pixel value and adjacent pixel values ​​​​to perform color interpolation algorithm to calculate the R, G, and B values ​​of each pixel. In this way, adjacent pixel photoelectrons of color cameras are easy to overflow, causing color distortion, low color saturation, and must use filters, which are not sensitive and flexible to light.

[0003] The current 3CCD camera basically overcomes these defects, but the manufacturing cost of 3CCD is very high, which is not conducive to popularization and use

[0004] In addition, there is also a scheme to take color images through a black and white camera: emit red, green, and blue monochromatic light in rotation to illuminate the observed object, obtain the color information of the observed object separately each time, and process the color information into a color image through software. But in many cutting-edge applications, more and more emphasis is placed on extremely short exposure time and large depth of field. If this imaging method is adopted, firstly, it will take 3 times longer to obtain a color image than the previous ordinary color camera, and secondly, Without a white balance solution, to achieve a good color image effect, it is impossible to get a better image than ordinary color cameras without white balance. In addition, ordinary cameras also have saturation and gain adjustments. In some applications They are indispensable. For example, in applications that use color information to reflect changes in the height of objects, saturation must be enhanced. Therefore, the current scheme for synthesizing color images with monochromatic light is immature and has not much use value.

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