Error Concealment | JPEG | MPEG-4 | Wavelet | YUV

Hi,
  I'm working with image compression with wavelet transform using different types of wavelets
in MATLAB.I did multi-resolution decomposition and reconstructed the image.I've calculated the
PSNR and MOS. I didn't encode the image into file.Is it possible to calculate the compression
ratio without encoding (like in DCT) ? If, then whats the procedure?
   
  If anyone has any idea plz share it with me and ur cooperation will be highly appreciated.
   
  Thanking u,
  Razib, Siam

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