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US 2013/0156342 A1Published application
No-Reference Spatial Aliasing Measure for Digital Image Resizing
AssigneeAT&T Intellectual Property I, L.P.
InventorAmy Ruth Reibman
Life of this patent
Estimating the term…
Abstract
A method includes identifying an area in an image that is associated with strong directional energy. The method further includes determining a first estimate of signal energy for the area and a second estimate of aliasing energy for the area. The method further includes estimating a severity of an aliasing error of the image based on the first estimate and the second estimate.
Claims20
A method comprising:
- identifying an area in an image, wherein the area is associated with strong directional energy;
- determining a first estimate of signal energy for the area and a second estimate of aliasing energy for the area;
- and
- estimating a severity of an aliasing error of the image based on the first estimate.
1 more element
A method comprising:
- identifying a plurality of areas in an image, the plurality of areas associated with strong directional energy, wherein the strong direction energy is determined based on a particular amount of contrast variance;
- selecting a particular area of the plurality of areas, based at least in part on a particular contrast variance;
- and
- determining a patch image based on selecting a particular set of the plurality of areas in the image that are associated with the strong directional energy, wherein the particular set excludes the particular area, and wherein the particular set includes at least one of the plurality of areas.
1 more element
A method comprising:
- identifying a plurality of areas in an image, the plurality of areas associated with strong directional energy, wherein the strong direction energy is determined based on a particular amount of contrast variance;
- reducing boundary effects of the image based at least in part on application of a Blackman-Harris window function to each of the plurality of areas;
- applying one or more directional masks based on Bresenham lines to one or more directions of the strong directional energy to identify one or more particular areas of the plurality of areas;
- and
- applying an aliasing mask to the one or more particular areas.
2 more elements
Dependencies are inferred from the claim text.