in function subtract() what means mask and dtype parameters?

asked 2018-07-04 18:25:38 -0500

Hy, i'm very nob in opencv, i'm using the subtract() method but i did not understand the parameters "mask" and "dtype", i will appreciate a lot if anybody can explain to me (an easy way) these parameters practical uses?

mask: optional operation mask; this is an 8-bit single channel array that specifies elements of the output array to be changed. (???).

dtype: optional depth of the output array(????).

Thanks in advance.

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Have you read doc? Have you read this tutorial.? If you still don't understand feel free to come back with a new question

LBerger gravatar imageLBerger ( 2018-07-05 02:04:44 -0500 )edit