why in the matlab function imgradient the angle computed as
Gdir = atan2(-Gy,Gx)*180/pi; % Radians to degrees
and not
Gdir = atan2(Gy,Gx)*180/pi; % Radians to degrees
as I expected?
is it a mistake in matlab or something else?
why in the matlab function imgradient the angle computed as
Gdir = atan2(-Gy,Gx)*180/pi; % Radians to degrees
and not
Gdir = atan2(Gy,Gx)*180/pi; % Radians to degrees
as I expected?
is it a mistake in matlab or something else?