cameracalibration | OpenCV camera calibration with user interface | Camera library
kandi X-RAY | cameracalibration Summary
kandi X-RAY | cameracalibration Summary
OpenCV camera calibration with user interface
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QUESTION
I want to create a camera calibration application with opencv for a university course. I have created a command line tool application on macOS High Sierra. Unfortunately it came without an info.plist file. My application crashes with the following error message:
CameraCalibration[2314:193066] [access] This app has crashed because it attempted to access privacy-sensitive data without a usage description. The app's Info.plist must contain an NSCameraUsageDescription key with a string value explaining to the user how the app uses this data. Program ended with exit code: 9
I have already tried adding a info.plist file and setting it in the applications' General tab. I have also added the NSCameraUsageDescription key and string. Unfortunately my application keeps on crashing due to the exact same error.
...ANSWER
Answered 2019-Nov-20 at 15:23You can embed an Info.plist
in your binary by setting Create Info.plist Section in Binary
and setting a path to your Info.plist
file in Xcode > Target > Build Settings > Packaging
(changes marked in bold):
Your Info.plist
might look like this:
QUESTION
I am trying to calibrate RaspiCam Fisheye lens camera with OpenCV. I am using Python example code and the cheesboard row and column numbers are also correct but somehow I can not get a successful result. I have tested with a lso much of photos below you can see them. My source code: https://github.com/jagracar/OpenCV-python-tests/blob/master/OpenCV-tutorials/cameraCalibration/cameraCalibration.py
my chess board rows and columns: rows = 9, cols = 6
but does not get a successful result
Edit: my solution
https://gist.github.com/mesutpiskin/0412c44bae399adf1f48007f22bdd22d
...ANSWER
Answered 2018-Jun-15 at 08:19First at all, as far as I can see your camera has fisheye optics, but it doesn't give all the surface of fisheye image (usually it is a circle inside black frame). The second. The code you are using is for usual camera or wide angle (90-110 degrees) It's not for fisheye (~ 180 degrees). Third. You can use source code URL link from HERE
QUESTION
I am trying to perform a stereo calibration of 2 USB cameras in order to perform depth map, but I fall on this error and I don't know how to solve. I would be really grateful to who would be able to help.
...ANSWER
Answered 2018-May-04 at 11:08So the error says:
error: OpenCV(3.4.1) D:\Build\OpenCV\opencv-3.4.1\modules\calib3d\src\calibration.cpp:3384: error: (-215) nimages > 0 in function cv::calibrateCamera
This means that you are passing empty list variables as the object points or as the image points.
In your code you have:
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