Apparatus and method for interpolating and rendering image on mobile devices
AssigneeSamsung Electronics Co., Ltd.
InventorChunhui Mei
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Abstract
An apparatus and method for efficiently interpolating and rendering transformed images on mobile devices are provided. The method includes obtaining a plurality of super pixels by virtually increasing a resolution of the original image, determining a sampling position of a target image pixel under transformation, selecting the nearest super pixel from the plurality of super pixels for the target image pixel, and determining a characteristic of the selected nearest super pixel for the target image pixel. The apparatus and method render a transformed image having image quality comparable to that achieved by bilinear interpolation method while significantly reducing the necessary calculation cost.
Claims16
A method for transforming an original image into a target image by interpolation, the method comprising:
- obtaining a plurality of super pixels by virtually increasing a resolution of the original image;
- determining a sampling position of a target image pixel under transformation;
- selecting the nearest super pixel from the plurality of super pixels for the target image pixel;
- and
- determining a color of the selected nearest super pixel for the target image pixel by determining the color of at least one pixel of the original image that is adjacent to the selected nearest super pixel and applying a weighted average of the at least one pixel characteristic by parallel calculation of four color channels with one of Single Instruction Multiple Data (SIMD) integer instructions and no SIMD integer instructions.
An apparatus for efficiently interpolating and rendering a transformed image, the apparatus comprising:
- a control unit for obtaining a plurality of super pixels by virtually increasing a resolution of the original image, for determining a sampling position of a target image pixel under transformation, for selecting the nearest super pixel from the plurality of super pixels for the target image pixel, and for determining a color of the selected nearest super pixel for the target image pixel by determining the color of at least one pixel of the original image that is adjacent to the selected nearest super pixel and applying a weighted average of the at least one pixel characteristic by parallel calculation of four color channels with one of Single Instruction Multiple Data (SIMD) integer instructions and no SIMD integer instructions.
Dependencies are inferred from the claim text.