Method, apparatus, and medium acquiring band-area height on the basis of transfer amount and transfer unit of partial image data of the band area

摘要

When processing image data by referring to at least one of reference image data and correction data, an image is processed in a unit of band area by dividing image data of a target image in a plurality of band areas. In this case, the minimum transfer unit of the image data is set. The minimum transfer unit of at least one of the reference image data and the correction data is obtained to process the image data in the minimum transfer unit. The transfer rate of the image data is determined so that the image data to be buffered fits in a capacity of a buffer available in image processing. The height of the band area to be created by division is determined based on the ratio of the transfer rate of the image data to the minimum transfer unit of the image data.

主权项

1. An image processing apparatus, comprising:
a holding unit configured to hold a height of each of a plurality of band areas into which image data is divided, wherein the height is obtained by a calculation device, wherein the calculation device acquires i) a first amount as a transfer amount of partial image data of the band area on the basis of the capacity of a buffer of the image processing apparatus and ii) a transfer unit of the partial image data so that data having the first amount being contained in the partial image data and data having a second amount being contained in reference data to be referred to for processing the data having the first amount can be buffered in the buffer, and acquires the height of the band area on the basis of the transfer amount and the transfer unit of the partial image data; a division unit configured to divide image data into a plurality of band areas; and an image processing unit configured to acquire partial image data of the band area divided by said division unit via the buffer and perform image processing with reference to the reference data.