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object detection using pixel value

asked 2020-06-05 23:16:36 -0500

Farid.dem gravatar image

updated 2020-06-06 02:02:01 -0500

berak gravatar image

hi i need to detect cloud shadow using pixel values the condtion is

450<band8<775 IF it's true === cloud shadow
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answered 2020-06-06 02:11:15 -0500

berak gravatar image

it's doubtful, that your "object detection" will work, but applying the "condition" is not so hard:

Mat data = ... // single channel input;

Mat lo = data > 450; 
Mat hi = data < 775;

Mat shadow = lo & hi; // bitwise_and

resulting in a "mask", where "shadow pixels" are 255 and the rest is 0

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Asked: 2020-06-05 23:16:36 -0500

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Last updated: Jun 06