Invention Grant
US06771835B2 Two-dimensional non-linear interpolation system based on edge information and two-dimensional mixing interpolation system using the same 有权
基于边缘信息的二维非线性插值系统和使用相同的二维混合插值系统

  • Patent Title: Two-dimensional non-linear interpolation system based on edge information and two-dimensional mixing interpolation system using the same
  • Patent Title (中): 基于边缘信息的二维非线性插值系统和使用相同的二维混合插值系统
  • Application No.: US09846759
    Application Date: 2001-05-01
  • Publication No.: US06771835B2
    Publication Date: 2004-08-03
  • Inventor: Yong In HanHweihn Chung
  • Applicant: Yong In HanHweihn Chung
  • Priority: KR00-32101 20000612; KR00-37964 20000704
  • Main IPC: G06K940
  • IPC: G06K940
Two-dimensional non-linear interpolation system based on edge information and two-dimensional mixing interpolation system using the same
Abstract:
A 2-dimensional non-linear interpolation system and method based on edge information includes an edge detector, an edge direction modifier, a near-edge coefficient generator, a filter coefficient generator and a non-linear interpolation unit. The edge detector detects edge information among pixels from a video signal applied through an input terminal. The edge direction modifier converts the edge information detected by the edge detector on the basis of a center point among peripheral pixels of an interpolation position and outputs modified edge information. The near-edge coefficient generator converts the coordinates of the interpolation position based on the modified edge information to generate a converted interpolation position, generates edge patterns corresponding to the converted interpolation position, and generates a plurality of 2-dimensional interpolation coefficients in response to predetermined one-dimensional non-linear interpolation filter coefficients. The filter coefficient generator generates the one-dimensional non-linear interpolation filter coefficients in response to the coordinates of the converted interpolation position, the edge patterns and predetermined one-dimensional filter coefficients. The non-linear interpolation unit multiplies data values associated with the peripheral pixels by the plurality of 2-dimensional non-linear interpolation coefficients to perform non-linear interpolation. Accordingly, even when a video image is magnified using non-linear interpolation, the resolution of a text or graphic image can be maintained without distortion of edges and aliasing.
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