Patent ID: 9117293
Filing Date: 2015-08-25
Classification: G06T

Abstract:
1. An image processing apparatus, comprising: a processor; and a memory, the memory storing program code executable by the processor to perform operations comprising: high-pass filtering to extract a high-frequency component of an input image; edge judgment to judge whether there is an edge in the input image based on the high-frequency component of the input image extracted by the high-pass filtering and estimate an edge position when there is an edge; coordinate conversion to obtain an edge position in an enlarged image obtained by enlarging the input image, the edge position corresponding to the edge position estimated by the edge judgment; interpolation to obtain, regarding a position where an edge position of the high-frequency component of the input image and the edge position of the enlarged image overlap, a pixel value at each pixel position of an edge circumference of the enlarged image using a pixel value of the high-frequency component of the input image; first enlargement processing to generate the enlarged image by enlarging the input image by a desired enlargement factor; and synthesis to synthesize the interpolated pixel value of the high-frequency component of the edge circumference and the pixel value of the pixel of the enlarged image.