← Back to Patent Explorer
EP0920221A3 Expired / Lapsed EP ⏱️ 0.0 years remaining

Image processing apparatus and method

Assignee: Seiko Epson Corp
•
Filing: 1998-11-23
•
Granted: —
•
Expires: 2018-11-23
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract Conventionally, in image processing using a smoothing filter, the large amount of calculation for 25 × the number of pixels takes much processing time. A computer 21 as the nucleus of image processing determines whether or not a pixel of interest is a color blur pixel, based on the intensity of a low-density element color, at steps S130 and S140. If the pixel is a color blur pixel, the computer 21 determines whether or not the color blur pixel is an edge pixel at step S150. If the pixel is not an edge pixel, the computer 21 uses a smoothing filter at step S152, while if the pixel is an edge pixel, the computer 21 uses a median filter at step S154, in image processing to reduce the color blur. This reduces the amount of calculation and realizes high-speed image processing.

Inventors

  • 👤 Naoki Kuwata
  • 👤 Yoshihiro Nakami

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-23 19:06
CPC Classifications
H; H04; H04N; H04N23/00; H04N23/80; H04N23/84; H04N23/843; H04N25/00; H04N25/10; H04N25/11; H04N25/13; H04N25/134; H04N2209/00; H04N2209/04; H04N2209/041; H04N2209/042; H04N2209/045; H04N2209/046

Claims Analysis

Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.

References Cited (Backward Citations)

US5396441A Cited
US5614947A Cited
US5552827A Cited
WO1997034423A1 Cited

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag