Calibration problem
Hello, may I ask why this calibration failed?
There could be a number of reasons, but it's hard to say without seeing the output from the console in the calibration tool. If you are getting any errors with reading the images in the tool, it might be because of the non-ASCII characters in the file path.
It shouldn’t be because of the characters
It seems the problem is that your calibration pattern doesn't have any marker dots (that are circles) to define the x and y axis of the pattern. Note the special dots in the image defining the variables in the pattern options window.