Assignment 25 — image manipulation

Due Monday, April 16

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Module manip.py

Supports several common image transformations – mirroring, flipping, rotating, scaling, and pixelation. Except for the pixelation transformation, all of the transformations copy values from the original image into the transformation.

Questions to ask yourself before attempting the transformations:

• How do the dimensions of the transformation compare with the original?

• What pixel from the original should be copied into transformed location (tx, ty)?

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Function cw( original )

• Returns a new image that is a 90-degree clockwise rotation of original.

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Function scale( original, xfactor, yfactor )

• Returns a new image that is a scaling of the original by xfactor in the x-dimension and yfactor in the y-dimension.

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Function pixelate( original )

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

 

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