Thread Subject: location of image coefficients after wavelet decomposition usinf wavedec2

Hello,

I trying to do an image processing on a 256x256 image of a person. I want to find the location of the image coefficients corresponding to the face part of the original image after wavelet decomposition.
The command that I am using for the wavelet decomposition is:
                                 [Wc, Wl] = wavedec2(I, 4, 'db8');
Could someone please tell me how the wavelet coefficients are exactly arranged?

I would really appreciate your help.

Thank you in advance.