How do I apply the dct values to the formula?

Asked Feb 23 '15 at 13:50

Active Feb 23 '15 at 16:31

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I am implementing an algorithm about face detection corresponding to a paper i have found. At the end of the paper it uses the dct values to take out false alarms by using some formulas. One of them is the following:
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My question is: I have calculated dct values for MxN, now how do i apply them to the formula?

EDIT: So that is what you mean? (The 0 to 7 inner loops are a random part of the 100x100 dct1 array, which has only y dct, the cb,cr are not needed for the algorith)

for(i = 0; i <= M * N * (4 - 1); i++){
        for(m = 0; m <= 7; m++){
            for(n = 0; n <= 7; n++){
                value += std::pow(dct1.at<float>(m,n),2);

            }
        }

edited Feb 23 '15 at 16:31

asked Feb 23 '15 at 13:50

iol

Following the formula, take the sum of the 8 x 8 DCT coefficients squared, and sum for all macroblocks. – Feb 23 '15 at 13:56
So if i have a 100 x 100 face region i take just the first 8 x 8 dct (or any other random 8x8 ) and then sum them for all macroblocks and it is correct? – iol Feb 23 '15 at 14:04
You sum all macroblocks of all types. – Feb 23 '15 at 14:33
If you write the answer, i'll happily give the check mark. – iol Feb 23 '15 at 14:49
`test1=15` is a bit confusing. – B. Decoster Feb 23 '15 at 15:47
My fault it was just test related :) – iol Feb 23 '15 at 16:31

How do I apply the dct values to the formula?

0 Answers0