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Lens color and brightness calibration method and device for panoramic camera module

A technology of panoramic photography and color brightness, applied in image communication, solid-state image signal generator, TV and other directions, can solve the problems of color and brightness deviation, and achieve the effect of eliminating color and brightness deviation

Active Publication Date: 2017-08-18
GUANGDONG HONGJING OPTOELECTRONICS TECHONLOGY CO LTD
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Problems solved by technology

[0008] In order to overcome the problem of color and brightness deviation in the synthesis of panoramic pictures in the existing panoramic camera module, the embodiment of the present invention provides a method for calibrating the lens color and brightness of the panoramic camera module

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  • Lens color and brightness calibration method and device for panoramic camera module
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  • Lens color and brightness calibration method and device for panoramic camera module

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Embodiment Construction

[0025] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0026] figure 1 It is a schematic flow chart of the first embodiment of the lens color brightness calibration method of the panoramic camera module of the present invention, which includes:

[0027] Step S101, obtain the imaging center point coordinates (p', q') of each lens in the panoramic camera module, the radius r, and the RGB three primary color values ​​of different blocks.

[0028] In this step, the panoramic camera module may be a dual-camera panoramic module including a first camera module and a second camera module, or a panoramic module including three or mo...

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Abstract

The embodiment of the invention provides a lens color and brightness calibration method for a panoramic camera module. The method comprises the following steps of obtaining an imaging central point coordinate (p', q') and a radius r of each lens in the panoramic camera module, and RGB three primary colour values of different blocks; and carrying out lens shading calibration according to obtained data of the lenses. The invention also provides a lens color and brightness calibration device for the panoramic camera module. According to the embodiment of the invention, the imaging central point coordinate (p', q') and the radius r of each lens in the panoramic camera module, and the RGB three primary colour values of the different blocks are obtained, and the lens shading calibration is carried out according to the obtained data of the lenses, so the color and brightness deviation generated when the panoramic camera module synthesizes panoramic images can be removed, and no any color and brightness difference can be seen in the images output by the panoramic camera module, thereby achieving the optimum seamless splicing effect.

Description

[0001] Technical field: [0002] The invention relates to a lens color brightness calibration method and device, in particular to a lens color brightness calibration method and device for a panoramic camera module. [0003] Background technique: [0004] Existing camera modules generally require Lens Shading (lens color brightness) calibration to achieve a more consistent effect in color and brightness between the periphery and center of the image. [0005] The panoramic camera module has a large wide-angle (more than 180-degree field of view) and the effective imaging image of the sensor becomes circular. Therefore, it used to analyze the planar light source with a low field of view and divide the picture by squares, and then perform LensShading The calibration method is no longer applicable. [0006] In addition, a 360-degree panoramic image is generally composed of two or more cameras. Therefore, when the image is stitched and synthesized, the previous method of LensShading...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/04H04N17/00
CPCH04N17/002H04N23/10
Inventor 程芳陆杨文冠方发清
Owner GUANGDONG HONGJING OPTOELECTRONICS TECHONLOGY CO LTD
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