To provide an apparatus and method for preventing image quality deterioration when moving picture data are compressed/decompressed.
A moving picture conversion apparatus detects an object shift amount in blocks for configuring moving picture data, and executes a decimation processing in spatial direction, or an interleaving processing in time direction, or a composite decimation processing on the basis of the detected moving amount. In particular, in the case of executing the decimation processing in the time direction, the moving picture conversion apparatus receives a shift amount corresponding to a past frame detected on the basis of a block belonging to a one-preceding decimation processing unit frame of a processing object, determines a frame corresponding to the block to be left as data in the decimation processing in the time direction, and executes the decimation processing in the time direction for leaving block data corresponding to the determined frame on the basis of the shift amount corresponding to the past frame. Through the configuration above, it is possible to reduce the image quality deterioration wherein a mobile object not substantially present in a decompressed image is displayed, and to realize image compression/decompression with high image quality.
KOBAYASHI SEIJI
| JPH07222145A | 1995-08-18 | |||
| JP2004023670A | 2004-01-22 | |||
| JPH0937243A | 1997-02-07 | |||
| JPH01231583A | 1989-09-14 | |||
| JPH07222145A | 1995-08-18 | |||
| JP2004023670A | 2004-01-22 | |||
| JPH0937243A | 1997-02-07 | |||
| JPH01231583A | 1989-09-14 |
Eiji Yamada
Toshio Sawada