Image processing apparatus, image processing method, and camera module
AssigneeKabushiki Kaisha Toshiba
InventorsShiroshi Kanemitsu, Kazuhiro Tabuchi, Takaaki Kawakami
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Abstract
In an image processing apparatus according to one embodiment, an edge correcting unit replaces a signal level of a target pixel with a maximum value of signal levels of a plurality of peripheral pixels when a sum of the signal level of the target pixel and the edge information is more than the maximum value, and the edge correcting unit replaces the signal level of the target pixel with a minimum value of the signal levels of the plurality of peripheral pixels when a sum of the signal level of the target pixel and the edge information is less than the minimum value.
Claims15
An image processing apparatus comprising:
- an edge information extracting unit that extracts edge information from an image signal that has not yet subjected to an interpolation process;
- and
- an edge correcting unit that performs edge correction on the basis of the edge information extracted by the edge information extracting unit,
- wherein the edge correcting unit performs the edge correction in which a signal level of a target pixel is replaced with a maximum value of signal levels of a plurality of peripheral pixels positioned on a periphery of the target pixel when a sum of the signal level of the target pixel and the edge information is more than the maximum value, and
- wherein the edge correcting unit performs the edge correction in which the signal level of the target pixel is replaced with a minimum value of the signal levels of the plurality of peripheral pixels when a sum of the signal level of the target pixel and the edge information is less than the minimum value.
An image processing method comprising:
- extracting edge information from an image signal that has not yet subjected to an interpolation process;
- performing an edge correction in which a signal level of a target pixel is replaced with a maximum value of signal levels of a plurality of peripheral pixels positioned on a periphery of the target pixel when a sum of the signal level of the target pixel and the edge information is more than the maximum value based on the extracted edge information;
- and
- performing an edge correction in which the signal level of the target pixel is replaced with a minimum value of the signal levels of the plurality of peripheral pixels when a sum of the signal level of the target pixel and the edge information is less than the minimum value based on the extracted edge information.
A camera module comprising:
- a lens unit that receives in light from a subject;
- an image sensor that generates an image signal according to the light received by the lens unit;
- and
- an image processing apparatus that performs image processing on the image signal transmitted from the image sensor,
- wherein the image processing apparatus comprises:
- an edge information extracting unit that extracts edge information from an image signal that has not yet subjected to an interpolation process;
- and
- an edge correcting unit that performs edge correction on the basis of the edge information extracted by the edge information extracting unit, and
- wherein the edge correcting unit performs the edge correction in which a signal level of a target pixel is replaced with a maximum value of signal levels of a plurality of peripheral pixels positioned on a periphery of the target pixel when a sum of the signal level of the target pixel and the edge information is more than the maximum value, and
- wherein the edge correcting unit performs the edge correction in which the signal level of the target pixel is replaced with a minimum value of the signal levels of the plurality of peripheral pixels when a sum of the signal level of the target pixel and the edge information is less than the minimum value.
Dependencies are inferred from the claim text.