1. Reducing the Number of Gray Levels in an Image (a) Write a computer program capable of reducing the number of gray levels in an image from 256 to 2, in integer powers of 2. The desired number of gray levels needs to be a variable input to your program. (b) Download Fig. 2.21(a) and duplicate the results shown in Fig. 2.21 of the book.

Filename	Size	Update
01\Fig0221(a)(ctskull-256).tif	144254	2001-02-22
01\Untitled.m	347	2017-10-04
01

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