摘要:
An image processing apparatus of the invention includes: a plurality of processing units which share image processing; a parameter memory unit which holds a parameter specifying an operation of each of the processing units; and a control unit which controls the plurality of processing units, and the control unit includes: a sequence management unit which activates each of the processing units according to a sequence indicating a sequence of activation of and completion of processing by each of the processing units, and confirms completion of the processing; and a parameter setting unit which, in advance of activation of each of the processing units by the sequence management unit, reads a parameter for each processing unit to be activated, from the parameter memory unit according to a memory map indicating an address of the parameter for the processing unit, and sets the parameter to the processing unit according to the read result.
摘要:
A parallel operation apparatus of a SIMD type comprises a processor element group of the SIMD type including a plurality of processor elements, wherein the respective processor elements simultaneously execute an identical operation, a data memory accessible from the respective processor elements in the processor element group, and an address conversion unit for converting an address with respect to the data memory accessed by the processor elements in accordance with a control signal by changing bit positions of the address. The address conversion unit preferably rearranges a first bit, a second bit, and a third bit from a lower order of address data into the second bit, the third bit, and the first bit from the lower order in the change of the bit positions.
摘要:
An image coding method includes: writing, into a sequence parameter set, buffer description defining information for defining a plurality of buffer descriptions; selecting one of the buffer descriptions for each processing unit that is a picture or a slice, and writing buffer description selecting information for specifying the selected buffer description, into a first header of the processing unit which is included in the coded bitstream; and coding the processing unit using the selected buffer description, and the buffer description defining information includes long-term information for identifying, among a plurality of reference pictures indicated in the buffer descriptions, a reference picture to be assigned as a long-term reference picture.
摘要:
An image decoding method is an image decoding method of decoding coded image data, including selecting, based on a type of a decoding target signal, an arithmetic decoding method that is used to decode the decoding target signal, from among a plurality of arithmetic decoding methods that include: a first arithmetic decoding method which is performed based on a symbol occurrence probability obtained according to a context, and which involves update of the symbol occurrence probability according to a decoding symbol; and a second arithmetic decoding method which is performed based on a symbol occurrence probability obtained according to a context, and which maintains the symbol occurrence probability that is other than 50%.
摘要:
An image coding method includes: writing, into a sequence parameter set, buffer description defining information for defining a plurality of buffer descriptions; selecting one of the buffer descriptions for each processing unit that is a picture or a slice, and writing buffer description selecting information for specifying the selected buffer description, into a first header of the processing unit which is included in the coded bitstream; and coding the processing unit using the selected buffer description, and the buffer description defining information includes long-term information for identifying, among a plurality of reference pictures indicated in the buffer descriptions, a reference picture to be assigned as a long-term reference picture.
摘要:
An image decoding method is an image decoding method of decoding coded image data, including selecting, based on a type of a decoding target signal, an arithmetic decoding method that is used to decode the decoding target signal, from among a plurality of arithmetic decoding methods that include: a first arithmetic decoding method which is performed based on a symbol occurrence probability obtained according to a context, and which involves update of the symbol occurrence probability according to a decoding symbol; and a second arithmetic decoding method which is performed based on a symbol occurrence probability obtained according to a context, and which maintains the symbol occurrence probability that is other than 50%.