Encoding device and encoding method, and decoding device and decoding method

摘要

The present technology relates to an encoding device and encoding method, and a decoding device and a decoding method whereby the data amount of encoded data of images of multiple viewpoints can be reduced. A low-resolution reference image generating unit performs, in the event of encoding a color image of a viewpoint B having lower resolution than the resolution of a color image of a viewpoint A, different from the viewpoint A, resolution reduction processing to reduce resolution on the image of the viewpoint A so that the resolution of the color image of the viewpoint A agrees with the resolution of the color image of the viewpoint B. An inter prediction unit generates a prediction image of the color image of the viewpoint B with reference to the color image of the viewpoint A after resolution reduction processing. A computing unit and so forth encode the color image of the viewpoint B using the prediction image. The present technology may be applied to a 3D-image encoding device, for example.

主权项

1. An encoding device comprising:
a first viewpoint resolution reduction processing unit configured to subject, in the event of encoding an image of a second viewpoint different from the first viewpoint, having lower resolution than the resolution of an image of a first viewpoint, the image of the first viewpoint to resolution reduction processing to reduce resolution so that the resolution of the image of the first viewpoint agrees with the resolution of the image of the second viewpoint; a prediction unit configured to generate a prediction image of the image of the second viewpoint with reference to the image of the first viewpoint after resolution reduction processing by the first viewpoint resolution reduction processing unit; an encoding unit configured to encode the image of the second viewpoint using the prediction image generated by the prediction unit; and a multiplexing unit configured to replicate, in the event of encoding a multiplexed image which is an image multiplexed from a plurality of images of the different second viewpoints, the image of the first viewpoint after resolution reduction processing by the first viewpoint resolution reduction processing unit only times equivalent to the number of the images of the second viewpoints making up the multiplexed image, and to multiplex the replicated images; wherein the prediction unit generates prediction images of the images of the second viewpoints with reference to the image of the first viewpoint multiplexed by the multiplexing unit.