| 摘要 |
In a time/space-division filtering, a moving image signal 10 in a certain resolution-hierarchy, for which time hierarchizing is performed, is divided into a time low-band signal 11 and a time high-band signal 12. A moving image signal 21, which has the moving image signal corresponding to the time high-band signal 12 reconstructed by employing the time low-band signal 11 and the time high-band signal 12, is generated. A reduced image signal 14 having the moving image signal 21 reduction-processed is generated. A high-band generating process by space hierarchizing is performed for the time high-band signal 12, thereby to generate a time high-band/space high-band signal 13. The time low-band signal 11, the reduced image signal 14, and the time high-band/space high-band signal 13 are assumed to be a division result respectively. The time/space-division filtering is recursively performed for the time low-band signal 11 that is assumed to be a moving image signal of which the time-resolution is lower by one stage, and the reduced image signal 14 that is assumed to be a moving image signal of which the space-resolution is lower by one stage, thereby to hierarchize the moving image signal in a multi-step. |
