PROBLEM TO BE SOLVED: To provide an image subband encoding system which insures complete reconfiguration of even an image peripheral part and does not make encoding efficiency worse. SOLUTION: Every line of an original image 10 is entered into a low-pass analyzing filter 1 and a high-pass analyzing filter 2 and divided into areas. The filters 1 and 2 separately have internal filters 21 and 24 and peripheral filters 22 and 23, and 25 and 26 respectively, the peripheral filters are used for an image peripheral part, and the internal filters are used for an image internal part. After this, 2:1 thinning is performed, and signals of each band are encoded by a low-pass encoding part 5 and a high-pass encoding part 7 and transmitted. After transmitting signals are decoded by a low-pass decoding part 6 and a high-pass decoding part 8, their waveforms are restored by a low-pass synthetic filter 3 and a high-pass synthetic filter 4 which are provided with internal filters 31 and 34 and peripheral filters 32 and 33, and 35 and 36 respectively, acquired waveforms of each band are added, and a decoded image 11 is acquired.
展开▼
