RGB filter
Terry H. Ess from United States  [3 posts]
8 years
I am trying to duplicate the results I get using the RGB filter in a case where I can not use RoboRelm.  The basic filtering and the use of the minimum intensity threshold is no problem but I am not sure how you are doing the hue threshold.  I would normaly calculate hue from RGB using the Preucil approach which places red at 0, green at 120 and blue at 240 (degrees).  Since the RGB filter's hue threshold can take a value from 0 to 255, I am not sure how to interrpret this.  What are the hue calculations you use?

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