| 摘要 |
Since a global motion vector detector is disposed on the same chip as, for example, an image converter utilizing spatial correlations, a first problem is that an original frame is not completely reproduced in an image, since the frame to be referred to when detecting the global motion vector is an image obtained by inverse-converting a nonreversibly compression-converted image. A second problem is that, upon high-efficient image encoding, the detection process of the global motion vector is performed even when it is not necessary to detect the global motion vector. An image encoding apparatus is equipped with a mechanism for detecting a global motion vector. The mechanism is located outside an image converter that utilizes spatial correlations, such as high-frequency component removal by a DCT and round-down by a quantization, and variable encoding.
|
