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Original image: www.flickr.com/photos/zaigee/1339165219/in/set-7215760194...
This image was taken by comparing each pixel's color with that of its left neighbor. The difference was compared to a threshold value, and the threshold was used to determine if each pixel was colored black or white.
ACTIVATE 2009: Computational Thinking
CMU - Carnegie Mellon University
Pittsburgh,PA
July 10-13, 2009
This photo is from July 11, 2009.
Original image: www.flickr.com/photos/zaigee/1851491711/in/photostream
This image was created by taking the brightness of each pixel in the original image, comparing it to a threshold value, and then making each pixel black or white depending on whether the brightness was greater than or less than the threshold value.