Calibration method, device, equipment and storage medium for camera calibration parameters
A camera calibration and correction method technology, which is applied in image data processing, image analysis, instruments, etc., can solve the problems of affecting the effect of restoring the image of real objects, large calibration errors, etc., and achieve the effect of reducing calibration errors and achieving good results
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Embodiment 1
[0033] figure 1 The flow chart of the correction method for camera calibration parameters provided by Embodiment 1 of the present invention, this embodiment is applicable to the situation where after the camera is calibrated, the parameters of the camera are corrected to reduce the calibration error. device, specifically including the following steps:
[0034] Step 110: Determine the internal parameters and external parameters of the camera according to the preset coordinates of multiple markers in the standard image and the coordinates of the markers in the captured image including the standard image acquired by the camera;
[0035] Among them, the standard image can be carried by the target panel; during the calibration process, the standard image can be displayed on the target panel by pasting a checkerboard image or other standard images with markers;
[0036] The internal parameters of the camera include the principal point of the camera, the focal length and distortion ...
Embodiment 2
[0053] Figure 5 The flow chart of the method for correcting the camera calibration parameters provided by Embodiment 2 of the present invention, this embodiment is applicable to the situation where after the camera is calibrated, the parameters of the camera are corrected to reduce the calibration error. device, this embodiment is based on the first embodiment, and provides a method for man-machine interaction to modify the theoretical coordinates, manually fine-tuning the parameters, so that the effect of reducing errors is better.
[0054] Wherein, step 120, calculating the theoretical coordinates of the marker from the coordinates of the marker in the captured image according to the internal parameters and external parameters, specifically includes:
[0055] Step 121, according to the internal parameters and external parameters, obtain the coordinates in the captured image corresponding to each coordinate in the target image to be constructed;
[0056] Step 122, extract t...
Embodiment 3
[0073] Figure 6 The structure schematic diagram of the camera calibration parameter correction device provided by the third embodiment of the present invention, this embodiment is applicable to the situation where after the camera is calibrated, the parameters of the camera are corrected to reduce the calibration error. The calibration device for the camera calibration parameters includes:
[0074] The calibration module 610 is configured to determine the internal parameters and external parameters of the camera according to the preset coordinates of multiple markers in the standard image and the coordinates of the markers in the captured image including the standard image acquired by the camera ;
[0075] A coordinate calculation module 620, configured to calculate the theoretical coordinates of the marker from the coordinates of the marker in the captured image according to the internal parameters and external parameters;
[0076] A modification module 630, configured to ...
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