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US 9,313,358 B2Granted
Image processing apparatus
AssigneeCanon Kabushiki Kaisha
InventorSoichiro Suzuki
Life of this patent
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Abstract
This invention improves the image processing speed by implementing efficient access to a buffer memory while suppressing the access count. For this purpose, when transferring ith partial image data obtained from a first signal processing unit to a buffer memory, a data-transfer controlling unit transfers data out of the ith partial image data except the data of a region overlapping an immediately preceding (i−1)th partial image data to the buffer memory, and transfers the ith partial image data including the data of the overlap region to a subsequent second signal processing unit.
Claims11
An image processing apparatus comprising:
- a plurality of image processing units each configured to process image data including a plurality of portions,
- the plurality of portions including regions overlapping each other,
- said plurality of image processing units including a first image processing unit configured to perform first image processing using the portion as a unit, and a second image processing unit configured to perform second image processing using the portion as a unit for the image data processed by said first image processing unit, and
- the plurality of portions including a first portion and a second portion to be processed next to the first portion;
- a memory;
- and
- a controller configured to write the image data processed by said first image processing unit in said memory, and read out the image data stored in said memory and transfer the image data to said second image processing unit,
- said controller writing, out of the image data of the second portion output from said first image processing unit, the image data of a region other than a region overlapping the first portion at an address that continues from the address of the image data of the overlap region in the image data of the first portion output from said first image processing unit, and reading out the image data of the second portion including the image data of the overlap region from said memory and transferring the image data to said second image processing unit.
5 more elements
Dependencies are inferred from the claim text.