Seeing and squeezingLesson 1 of 9Free preview
A filter slides over the picture
Nine weights, nine pixels, one sum. The edge filter scores 6 where the stamp’s outline turns, and the same nine weights work everywhere.
Seeing and squeezingLesson 1 of 9Free preview
Nine weights, nine pixels, one sum. The edge filter scores 6 where the stamp’s outline turns, and the same nine weights work everywhere.