IMAGE CODING APPARATUS AND METHOD

摘要

An image coding apparatus and method capable of suppressing a decrease in coding efficiency. The image coding apparatus includes: a coding unit that codes image data configured by plural layers; an interlayer prediction-related information generating unit that generates information relating to an interlayer prediction of the current slice in a case a layer of the current slice is an enhancement layer, and a slice type of current slice is a P slice or a B slice; and a transmission unit that transmits coded data of the image data generated by the coding unit and the information relating to the interlayer prediction generated by the interlayer prediction-related information generating unit. The apparatus and method, for example, may be applied to an image coding apparatus that scalably codes image data or an image decoding apparatus that decodes coded data acquired by performing scalable coding of the image data.

主权项

1. An image decoding apparatus comprising:
circuitry configured to: acquire reference layer designation information designating a layer that is referred to in an interlayer prediction from header information only in a case where a maximum number of another layer referred to at a time of performing the interlayer prediction and a number of another layer referred to at the time of performing the interlayer prediction do not coincide with each other, and decode coded data in which image data is coded by performing an interlayer prediction based on the acquired reference layer designation information.