Apparatus and method of interpolating image using region segmentation
AssigneeSamsung Electronics Co., Ltd.
InventorIl Soon Lim
Life of this patent
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Abstract
An apparatus and a method of interpolating an image via a region division are provided. To improve an image quality artifact around an edge, the apparatus to interpolate the image may determine whether an inputted image corresponds to an edge after performing a thinning process with respect to a gradient value of the inputted image, and convert a resolution of the image using optimal location information via a region division and a pixel replacement according to an interpolation direction of the image.
Claims19
An apparatus to interpolate an image, the apparatus comprising:
- a gradient calculation unit calculating a gradient value of each pixel of an inputted image;
- an edge determination unit determining whether the pixel corresponds to an edge by using the gradient value;
- an interpolation direction determination unit determining an interpolation direction according to a location of a pixel to be interpolated within an interpolation window when a pixel corresponding to an edge is determined to exist in the interpolation window;
- a pixel replacement unit dividing the interpolation window according to the interpolation direction based on the pixel to be interpolated and replacing a pixel value within the divided interpolation window;
- and
- an interpolation performance unit interpolating the pixel to be interpolated using the replaced pixel value.
A method of interpolating an image, the method comprising:
- calculating a gradient value of each pixel of the inputted image;
- determining an interpolation direction according to a location of a pixel to be interpolated within an interpolation window when a pixel corresponding to an edge is determined to exist in the interpolation window, based on the calculated gradient value;
- dividing the interpolation window according to the interpolation direction based on the pixel to be interpolated, and replacing a pixel value within the interpolation window;
- and
- interpolating the pixel to be interpolated using the replaced pixel value.
Dependencies are inferred from the claim text.