Image processing apparatus

Details Image processing apparatus Image processing apparatus

1993-01-26

1999-08-03

Mancuso, Joseph

Image analysis

Pattern recognition

Feature extraction

382199, 382266, G06K 948

Patent

active

059335289

ABSTRACT:
An image processing apparatus of this invention reads raster-scanning type binary image data, and causes an outline extraction unit to extract outline vectors of an image. When a white raster detection unit detects that one raster data consists of all white pixels, it supplies the detection result to the outline extraction unit. Upon reception of this detection result, the outline extraction unit outputs the outline vectors extracted so far as a group of data to an outline smoothing & enlarging/compressing unit as a processing unit for executing outline smoothing processing or enlarging/compressing processing. In this manner, since this invention processes an image as a group of data divided in units of white rasters, advantages such as a decrease in required memory capacity can be expected.

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patent: 4628532 (1986-12-01), Stone et al.
patent: 5007098 (1991-04-01), Kumagai
patent: 5093870 (1992-03-01), Watanabe
patent: 5197108 (1993-03-01), Watanabe
patent: 5214718 (1993-05-01), Khosla
Computer Vision, Graphics & Image Processing, vol. 28, No. 1, Oct. 1984, pp. 109-125, David Capson, "An Improved Algorithm For Sequential Extraction of Boundaries From a Raster Scan".
Computer Vision, Graphics & Image Processing, vol. 38, No. 3, Jun. 1987, pp. 229-257, Lunscher WHHJ & Beddoes MP, "Fast Binary--Image Boundary Extraction".

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