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2015-10-02 21:00:08 -0500 answered a question HSV Thresholding Difference between ImageJ and OpenCV

In OpenCV, the hue range 0-179 while in ImageJ it's 0-255.

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2015-09-30 11:49:19 -0500 asked a question HSV Thresholding Difference between ImageJ and OpenCV

I use ImageJ before using OpenCV functions because in ImageJ I can use their interactive HSV thresholding tool to get the HSV parameters I want to threshold using OpenCV functions. After using ImageJ and after converting a pic from BGR to HSV, I use the parameters from ImageJ in the cv2.thresholding function with cv2.THRESH_BINARY. However, when I look at my mask derived from the thresholding using OpenCV, it is close, but not the same as the one I obtained with ImageJ.

  1. Is there a reason for this? Am I doing something wrong?

  2. Is there an interactive thresholding script in Python that uses OpenCV functions?