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how to calibrate camera (stereo)

Hi i am trying to calibrate two cameras which are looking at a mini object through a microscope.

From what I read the calibration should be done by moving the calibration target around, so that it fulfill some criteria:

  1. size (by moving the target approaching the camera and away from the camera)
  2. area (by moving along the x axis and y axis direction)
  3. skew (by tilting the target with various angle)

But due to space and lighting limitation I can only move up and down using the calibration target. It is impossible to do the (stereo) calibration like this? Since I got only black images after using stereo rectify.

Thank you

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how to calibrate camera (stereo)

Hi i am trying to calibrate two cameras which are looking at a mini object through a microscope.

The calibration target is a circle grid.

I have to mark these images appropriately in order to find the circles (images with markers)

markers data : (points only; format is objectX,objectY,objectZ,img1X,img1Y,img2X,img2Y per line) if you want you can load these points as the input for stereocalib.

My program is very similar to the one from opencv example. I tried both :

  • First: to calibrate the camera individually before stereo-calibration (ofc fix-intrinsic flag is set while using stereocalib)
  • Second: directly use stereocalib I still have black images as output.

From what I read the calibration should be done by moving the calibration target around, so that it fulfill some criteria:

  1. size (by moving the target approaching the camera and away from the camera)
  2. area (by moving along the x axis and y axis direction)
  3. skew (by tilting the target with various angle)

But due to space and lighting limitation I can only move up and down using the calibration target. It is impossible to do the (stereo) calibration like this? Since I got only black images after using stereo rectify.

Thank you

how to calibrate camera (stereo)

Hi i am trying to calibrate two cameras which are looking at a mini object through a microscope. The calibration target is a circle grid.

I have to mark these images appropriately in order to find the circles (images with markers)

markers data : (points only; format is objectX,objectY,objectZ,img1X,img1Y,img2X,img2Y per line) if you want you can load these points as the input for stereocalib.

My program is very similar to the one from opencv example. I tried both :

  • First: to calibrate the camera individually before stereo-calibration (ofc fix-intrinsic flag is set while using stereocalib)
  • Second: directly use stereocalib stereocalib

I still have black images as rectification output.

From what I read the calibration should be done by moving the calibration target around, so that it fulfill some criteria:

  1. size (by moving the target approaching the camera and away from the camera)
  2. area (by moving along the x axis and y axis direction)
  3. skew (by tilting the target with various angle)

But due to space and lighting limitation I can only move up and down using the calibration target. It is impossible to do the (stereo) calibration like this? Since I got only black images after using stereo rectify.

Thank you

how to calibrate camera (stereo)

Hi i am trying to calibrate two cameras which are looking at a mini object through a microscope. The calibration target is a circle grid.

I have to mark these images appropriately in order to find the circles (images with markers)

markers data : (points only; format is objectX,objectY,objectZ,img1X,img1Y,img2X,img2Y per line) if you want you can load these points as the input for stereocalib.

My program is very similar to the one from opencv example. I tried both :

  • First: to calibrate the camera individually before stereo-calibration (ofc fix-intrinsic flag is set while using stereocalib)
  • Second: directly use stereocalib

I still have black images as rectification output.

From what I read the calibration should be done by moving the calibration target around, so that it fulfill some criteria:

  1. size (by moving the target approaching the camera and away from the camera)
  2. area (by moving along the x axis and y axis direction)
  3. skew (by tilting the target with various angle)

But due to space and lighting limitation I can only move up and down using the calibration target. It is impossible to do the (stereo) calibration like this? Since I got only black images after using stereo rectify.

Thank you