Consider the following sequence of values:
|
10
|
11
|
12
|
11
|
12
|
13
|
12
|
11
|
|
10
|
-10
|
8
|
-7
|
8
|
-8
|
7
|
-7
|
(a) Transform each row separately using an eight-point DCT. Plot the resulting 16 transform coefficients.
(b) Combine all 16 numbers into a single vector and transform it using a 16-point DCT. Plot the 16 transform coefficients.
(c) Compare the results of (a) and (b). For this particular case would you suggest a block size of 8 or 16 for greater compression? Justify your answer.