Patent ID: 8897373
Filing Date: 2014-11-25
Classification: A63F,G06T,H04N

Abstract:
1. A moving image distribution server, comprising: an acquirer which is able to sequentially acquire viewpoint information to determine a screen to be rendered; a renderer which is able to render a distribution screen by rendering processing in at least two stages using the viewpoint information acquired by said acquirer, wherein said renderer generates, in rendering processing of a preceding stage, intermediate value maps of specific channels including a Depth map to be referred to in rendering processing of a subsequent stage, and renders, in the rendering processing of the subsequent stage, the distribution screen by referring to the intermediate value maps; a divider which is able to acquire the Depth map of the intermediate value maps generated for a first screen and divide the Depth map into a plurality of blocks during execution of the rendering processing of the subsequent stage for the first screen; a specifier which is able to specify, for each of the plurality of blocks, a corresponding region which corresponds to a block on a Depth map generated for a second screen rendered before the first screen; a coder which is able to generate, after an end of the rendering processing of the subsequent stage for the first screen, coded moving image data by coding the first screen, wherein for a block, out of the plurality of blocks, whose similarity to the corresponding region specified by said specifier is not less than a threshold, said coder performs inter-frame coding between an image of the block of the first screen and an image of the corresponding region of the second screen, and for a block, out of the plurality of blocks, whose similarity to the corresponding region specified by said specifier is less than the threshold, said coder performs intra-frame coding of the image of the block of the first screen; and a transmitter which is able to send data to an external device, wherein said transmitter: