Homework 28 — image manipulation

Due Monday before class

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Tasks

• Redownload manip.py

• Add two functions each to your modules dimensions.py and locate.py

• Define a function blur() in module effect.py

• To test your functions use progam photo_ops.py

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Module dimensions.py

• Functions to be added

• shrink( original )

• Returns the dimensions of an image that would be half that of image original

• enlarge( original )

• Returns the dimensions of an image that would be twice that of image original

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Module locate.py

• Functions to be added

• shrink( nspot, nw, nh )

• Returns a new correspondent location ( a, b ) for nspot, where the dimensions in the correspondent image (original) are twice that of nw and nh

• enlarge( nspot, nw, nh )

• Returns a new correspondent location ( a, b ) for nspot, where the dimensions in the correspondent image are (original) half that of nw and nh

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Module effect.py

• Function to be added

• blur( original )

• Returns a new image that is a 16 by 16 scaling of a 1/16 by 1/16 scaling of original

• You should find module manip.py functions zoom_in() and zoom_out() helpful.

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