hw4 - Due Wednesday at 5 PM ECE 638 Homework No 4 Fall 2005...

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Due Wednesday, 11/09/05 at 5 PM ECE 638 Homework No. 4 Fall 2005 1. Find the optimal 2-level quantizer (in the sense of minimizing mean-squared error for a random variable X with the following density function: 2. Consider a bichromatic (duotone) image with histogram shown below G 0.0 1.0 0.0 1.0 R Assume that the histogram has constant value within the shaded area. a. Find the first four splits and determine the output colors for the following two methods of color image quantization: i. median cut ii. binary splitting b. Consider the application of SSQ to the above figure. i. Suppose that we split the R axis first, and quantize it into 4 levels. Determine the optimal cell boundaries. ii. Now suppose that we further split the leftmost column into 3 levels along the G axis. Determine the optimal cell boundaries and the output colors for this column. 3. Uniform scalar quantization vs. vector quantization
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- 2 - ECE 638 Homework No. 4 a. Write a program in either C or Matlab to perform uniform scalar quantization
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hw4 - Due Wednesday at 5 PM ECE 638 Homework No 4 Fall 2005...

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