本次美国代写是Matlab图像处理与分析的一个assignment

1. Consider the continuous image f (x , y) = 5 sin(x ) sin(y ) . By using the uniform Lloyd-Max
quantizer, compute the transition and reconstruction levels required for quantizing f  (x , y) into
5 gray levels.

2. For an N – sample (with N = 2q ) one-dimensional discrete signal f  ( m ), the Walsh transform
is given by

Calculate and tabulate the values of the forward transformation kernel matrix when N = 8.

3. Consider a 4 4 × pixel discrete image

Calculate the corresponding Hadamard transform image T .

4. With reference to the forward kernel of the discrete cosine transform for N = 4, work out the
values that make up the block corresponding to u v = = 1.

5. Consider the image

Threshold this image using threshold levels 0,1,2,3,4,5,6,7,8 T = . What do you observe?