Image processing apparatus and method of controlling the same

摘要

In an image processing apparatus for encoding image data and a method of controlling the same, whether an attribute of each of a plurality of areas in image data corresponds to an edge in an image based on the image data is determined, and one of a plurality of sub-sampling processes is selected according to the determination for each of the plurality of areas. Note that the plurality of sub-sampling processes can sub-sample color difference components of each of the plurality of areas by different processes. By the sub-sampling process selected as that corresponding to each of the plurality of areas, each of the plurality of areas is sub-sampled to encode the image data.

主权项

1. An apparatus comprising:
a determination unit configured to determine whether an attribute of each of a plurality of areas in image data corresponds to an edge in an image based on the image data; a sub-sampling unit configured to sub-sample color difference components of each of the plurality of areas by a plurality of different processes; a selection unit configured to select a sub-sampling process corresponding to each of the plurality of areas from the plurality of processes configured to be executed by the sub-sampling unit in accordance with the determination for each of the plurality of areas by the determination unit; and an encoder configured to encode image data, each of the plurality of areas of which is sub-sampled by the sub-sampling process corresponding to each of the plurality of areas selected by the selection unit.