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Small error in simple Canny edge detector #3

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rspq opened this issue Feb 12, 2020 · 0 comments
Open

Small error in simple Canny edge detector #3

rspq opened this issue Feb 12, 2020 · 0 comments

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@rspq
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rspq commented Feb 12, 2020

Re.

(angle(i,j)<-157.5 && angle(i,j)>=-180)

This only covers half the octant for "left" gradients. The test you want (assuming angles are the normal -180 to +180):

(angle(i,j)<-157.5 && angle(i,j)>157.5)

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