Patent ID: 7933465
Filing Date: 2011-04-26
Classification: G06T

Abstract:
1. A processing data supply method when performing an arithmetic processing on unprocessed image data composed of a plurality of lines, each line containing a plurality of pieces of unit data of a prescribed size arranged sequentially in a main scanning direction, with a use of target unit data and reference unit data located in close proximity to the target unit data, as predetermined by the arithmetic processing, the method comprising: placing intermediate storage units of a number corresponding to a number of lines required for the arithmetic processing, each intermediate storage unit including a plurality of storage regions of the prescribed size arranged sequentially from one end to another end and having a capacity smaller than a size of each line and equal to or larger than a size required for the arithmetic processing in the main scanning direction; performing, in each arithmetic processing, an input process of inputting unit data one piece by one piece from each line of the unprocessed image data to a storage region at the one end as an input end of an intermediate storage unit corresponding to the line, and an output process of reading unit data stored in a storage region at each position determined according to a positional relationship between target unit data and reference unit data of the target unit data from each intermediate storage unit and supplying the unit data for the arithmetic processing; and performing data shifting of each intermediate storage unit by one storage region from the one end to the other end each time the arithmetic processing is performed in each line.