> <mailto:
aleeper@stanford.edu>> wrote:
>
> Hi-
>
> I've successfully used cameracalibrator.py on a 640x480 image
> stream, but now I'm trying to use it on a 320x240 image feed. I do
>
> $rosrun camera_calibration cameracalibrator.py --size 7x6 --square
> 0.0127 image:=/my_camera/image camera:=/my_camera
>
> like the tutorial says, but it gives the following error:
>
> Exception in thread Thread-4:
> Traceback (most recent call last):
> File "/usr/lib/python2.6/threading.py", line 525, in __bootstrap_inner
> self.run()
> File
> "/opt/ros/boxturtle/stacks/image_pipeline/camera_calibration/nodes/cameracalibrator.py",
> line 59, in run
> self.function(m)
> File
> "/opt/ros/boxturtle/stacks/image_pipeline/camera_calibration/nodes/cameracalibrator.py",
> line 147, in handle_monocular
> scrib = cv.CreateMat(self.height / scale, self.width / scale,
> cv.GetElemType(rgb))
> ZeroDivisionError: integer division or modulo by zero
>
>
> I think the issue is line 144 in cameracalibrator.py,
> scale = int(math.ceil(self.width / 640))
>
> but if I try doing either 640.0, or changing it to 320, I get this error
>
> Traceback (most recent call last):
> File "/usr/lib/python2.6/threading.py", line 525, in __bootstrap_inner
> self.run()
> File
> "/opt/ros/boxturtle/stacks/image_pipeline/camera_calibration/nodes/cameracalibrator.py",
> line 59, in run
> self.function(m)
> File
> "/opt/ros/boxturtle/stacks/image_pipeline/camera_calibration/nodes/cameracalibrator.py",
> line 187, in handle_monocular
> self.redraw_monocular(scrib, rgb)
> File
> "/opt/ros/boxturtle/stacks/image_pipeline/camera_calibration/nodes/cameracalibrator.py",
> line 410, in redraw_monocular
> self.buttons(display)
> File
> "/opt/ros/boxturtle/stacks/image_pipeline/camera_calibration/nodes/cameracalibrator.py",
> line 389, in buttons
> self.button(cv.GetSubRect(display, (x,180,100,100)),
> "CALIBRATE", self.goodenough)
> error
>
> Any ideas?
>
> Thanks!
> --Adam
>
>
>
>
>
> Adam Leeper
> Stanford University