US 7,609,912 B2 · Image transforming device and method based on edges

Abstract

An image transforming apparatus and method include a linear interpolation block for generating linear interpolation information for a pixel to be interpolated between original pixels of a predetermined image; an edge information generating block for generating edge information and edge location information; a weight determining block for determining a weight for the linear interpolation information and the edge information of the interpolation pixel based on the edge location information; an interpolation information generating block for determining a pixel value of the interpolation pixel by reflecting the weight to the edge information and the linear interpolation information; and an interpolating block for generating the interpolation pixel based on the pixel value determined in the interpolation information generating block. Therefore, an image can be transformed into a high-resolution enlarged image with an edge area expressed clearly.

Claims16

Dependent claims

An apparatus for transforming an image, comprising:

a linear interpolation block for generating linear interpolation information for an interpolation pixel to be interpolated between original pixels of a predetermined image;
an edge information generating block for generating edge information which represents a pixel value of a pixel for indicating an edge and generating edge location information for indicating a location of an edge area of the image using two threshold values, within each of blocks consisting of the original pixel and interpolation pixel, respectively;
a weight determining block for determining a weight for the linear interpolation information and the edge information of the interpolation pixel based on the edge location information;
an interpolation information generating block for determining a pixel value of the interpolation pixel by reflecting the weight to the edge information and the linear interpolation information;
and
an interpolating block for generating the interpolation pixel based on the pixel value determined in the interpolation information generating block.

3 more elements

An image transforming method of an apparatus for transforming an image, comprising the steps of:

a) generating linear interpolation information for an interpolation pixel to be interpolated between original pixels of a predetermined image;
b) generating edge information which signifies a pixel value of a pixel for indicating an edge of the image and generating edge location information for indicating a location of an edge area of the image using two threshold values, within each of blocks consisting of the original pixel and interpolation pixel, respectively;
c) determining a weight for the linear interpolation information and the edge information of the interpolation pixel based on the edge location information;
d) determining a pixel value of the interpolation pixel by reflecting the weight to the edge information and the linear interpolation information;
and
e) generating the interpolation pixel based on the determined pixel value,
wherein the steps are preformed by the apparatus.

4 more elements

Dependencies are inferred from the claim text.

Image transforming device and method based on edges

Life of this patent

Image transforming device and method based on edges

Life of this patent

Abstract

Claims16