摘要:
An input unit that sequentially writes a digital image signal to be input in a first buffer while counting number of pixels of the digital image signal, and that writes the written digital image signal in a second buffer; and a command fetching/issuing unit that calculates a position of a pixel based on process delay information that is added to an image processing command and that indicates a delay amount required until image processing by the command is started since the input of the digital image signal, and a counter value indicating the number of pixels, and that issues the image processing command when the position of the pixel is in a valid area are included. Image processing is performed on pixels written in the second buffer based on the issued image processing command.
摘要:
According to an embodiment, a compiling device compiling a source program written so as to use a frame memory includes a processing delay amount calculator configured to calculate respective processing delay amounts between a plurality of process tasks in the source program on the basis of processing states of pieces of data processed by the process tasks. The compiling device also includes a line memory amount calculator configured to calculate respective line memory sizes required for each of the process tasks on the basis of an access range of a frame memory from which the process task reads data and an instruction code converter configured to convert the plurality of process tasks to instruction codes executable in a pipeline on the basis of the processing delay amounts and the line memory sizes.
摘要:
According to one embodiment, an image processing apparatus connectable to a main memory in which a plurality of pixel values of unconverted image is stored and a cache memory including a plurality of cache blocks. The apparatus includes a counter, a coordinate determination module, a memory controller, a cache access module, a pixel value calculator, and an output module. The counter determines a coordinate within converted image according to a predetermined execution sequence. The coordinate determination module determines a plurality of coordinates within unconverted image of the pixel values of unconverted image necessary to calculate a pixel value of converted image corresponding to the coordinate within converted image. The memory controller transfers the pixel values of unconverted image stored in the main memory to the cache blocks corresponding to each of the coordinates within unconverted image. The cache access module reads out all the pixel values of unconverted image necessary to calculate the pixel value of converted image from the cache blocks. The pixel value calculator calculates the pixel value of converted image by referring to the pixel values of unconverted image read out by the cache access module. The output module outputs the pixel value of converted image.