Camera calibration and burning method and device

Abstract

The invention discloses a calibration burning method for a camera. The method comprises the following steps of step 1.providing the camera and a calibration light source, wherein the calibration lightsource is provided with a light emitting surface, and the light emitting surface is a concave spherical surface; step 2.placing the camera on the center of sphere of the light emitting surface and shooting towards the light emitting surface, wherein the light emitting surface at least covers the visual angle range of the camera; and step 3.carrying out calibration burning on the camera. Accordingto the calibration burning method, when the calibration burning is carried out on the camera, the error of calibration parameters can be reduced to be helpful for improving the accuracy of calibration burning of the camera. The invention further discloses a calibration burning device for the camera.

Description

technical field [0001] The invention relates to the field of photography, in particular to a method and device for calibrating and burning a camera. Background technique [0002] With the rapid development of mobile phone cameras, clients have higher and higher requirements for camera imaging effects. However, each camera has different imaging effects due to individual differences, and it is difficult for all cameras to achieve a consistent imaging effect by only relying on a fixed set of imaging parameters. [0003] In order to improve the consistency of the imaging effect of the camera, the camera is generally calibrated and burned before leaving the factory. When the client uses the camera, it only needs to read the calibration parameters pre-burned in the camera and apply it to the captured image. It can achieve the same imaging effect between cameras. [0004] In the prior art, a light source panel with a flat light-emitting surface is generally used to provide calibr...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, a light source panel with a flat light-emitting surface is generally used to provide calibration light for the calibration and burning of the camera, which has the following disadvantages: 1. The distance from the edge of the light source panel to the camera is larger than the distance from the center to the camera. The brightness uniformity of the light is not good, which affects the calibration accuracy; 2. The viewing angle range that the light source panel can cover is only 120°, which cannot be used for calibration and burning of wide-angle camera modules; 3. With the development of mobile phone camera technology, multi-camera modules Grouping is a general trend. In order to obtain specific functions, multiple cameras with different field of view need to be integrated and used together. All cameras in this multi-camera module with multiple field of view need to be calibrated and burned under the same calibration light source. , which requires the calibration light source to be suitable for cameras with different field of view. For a multi-camera module with a wide-angle camera, the light source panel cannot fulfill this requirement

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