Patent ID: 6501859
Filing Date: 2002-12-31
Classification: H04N

Abstract:
An image processing apparatus comprising:generation means for generating a plurality of sample values representing an image; transforming means for transforming the plurality of sample values into a plurality of frequency bands LL(mâˆ’1), LH(mâˆ’1), HL(mâˆ’1) and HH(mâˆ’1) by wavelet-transform, and transforming one of the bands into a plurality of frequency bands LL(m), LH(m), HL(m) and HH(m) by wavelet-transform; encoding means for generating first encoded data by encoding the one band to be transformed into the frequency bands LL(m), LH(m), HL(m) and HH(m), and generating second encoded data by encoding the frequency bands LL(m), LH(m), HL(m) and HH(m) obtained by said transforming means; comparing means for comparing amounts of the first and second encoded data obtained by encoding of said encoding means; and selection means for outputting one of the first and second encoded data in accordance with a comparison result of said comparing means.