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Image processing apparatus and method that avoid generation of moire

  • US 20030122825A1
  • Filed: 11/27/2002
  • Published: 07/03/2003
  • Est. Priority Date: 11/30/2001
  • Status: Active Grant
First Claim
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1. An image processing apparatus, comprising a spatial filtering unit which applies spatial filtering to input image data to generate filtered image data such that said spatial filtering provides a broader dynamic range for outputs than for inputs;

  • and a high-resolution conversion unit which interpolates the filtered image data in a first direction by an average of values of two pixels adjacent in the first direction, in a second direction perpendicular to the first direction by an average of values of two pixels adjacent in the second direction, and in a direction diagonal to the first and second directions by an average of four pixels surrounding a pixel of interest, thereby converting the filtered image data into high-resolution image data.

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