Sony Corporation

Hiroshi Akinaga

Takahiro Fukuhara

Kazuhisa Hosaka

Naoto Nishimura

This invention relates to an image processing apparatus and an image processing method for improving the processing capacity per unit time in encoding and decoding images. A coefficient line sorting portionsorts coefficient lines into an order which is different from that of wavelet inverse transform process as well as from that of transmission and in which the coefficient lines are sorted for an encoding process of which the degree of difficulty of encoding can be estimated by a rate control portionat the earliest possible time. An encoded line sorting portionsorts encoded lines into an order which is different from that of wavelet inverse transform process and in which the encoded lines are transmitted with improved resistance to the instability of the available transmission rate. This invention can be applied to image processing apparatus, for example.

Image processing apparatus and image processing method

An image processing device includes a supply unit that supplies a coefficient data group in each sub-band, in which image data of a predetermined number of lines is decomposed for each frequency band by a hierarchical analysis filter process and which includes coefficient data of one line or more in a sub-band of at least a lowest frequency component, a synthesis filter unit that synthesizes the coefficient data group and generates image data in a baseband, a supply control unit that controls the supply unit to supply the coefficient data at such a timing that the synthesis filter unit can generate the image data at a timing corresponding to a horizontal synchronization period, and a synthesis filtering control unit that controls the synthesis filter unit to synthesize the coefficient data group in the predetermined order and generate the image data at a timing corresponding to the horizontal synchronization period.

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Kanagawa, Japan

Hiroshi Akinaga