RECOGNIZING APPARATUS - NTT DATA TSUSHIN KK

Title:

RECOGNIZING APPARATUS

Document Type and Number:

WIPO Patent Application WO/1990/012370

Kind Code:

A1

Abstract:

The apparatus of the invention is provided with a contour pick-up unit (16) that finds a coordinate value sequence of contour pixels by tracing the contour of a figure from pixel data obtained by scanning the figure stored in a first image memory (14), and a protuberance coefficient calculation unit (18) which converts the contour pixels into protuberance coefficients that represent protuberant condition from the coordinate value sequence of contour pixels found by the contour pick-up unit (16). A contour line discrimination unit (20) discriminates, based on the protuberance coefficients converted by the protuberance coefficient calculation unit (18), which one of the characteristic components consisting of linear component, curve component, connection component, complex component and tiny component forms the above contour pixels. This unit then stores the label ("1", "2", "3", "4", "5") indicating the characteristic components in an address corresponding to a contour pixel which is discriminated in a second image memory (22). A label propagation unit (24) determines a characteristic component of a pixel in the line surrounded by the label based on the label stored in the second image memory (22) and the pixel data stored in the first image memory (14), and stores the label indicating the characteristic component in the address corresponding to a pixel in the line that is determined in the second image memory (22). A coupling component separation unit (26) separates the labels stored in the second image memory (22) for each of the coupling components.

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Inventors:

OKADA MAMORU (JP)
ONO CHISATO (JP)

Application Number:

PCT/JP1990/000455

Publication Date:

October 18, 1990

Filing Date:

April 04, 1990

Export Citation:

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Assignee:

NTT DATA TSUSHIN KK (JP)

International Classes:

G06T7/00; G06T7/60; G06V10/46; (IPC1-7): G06F15/70

Foreign References:

JPS6376080A	1988-04-06
JPS60245087A	1985-12-04
JPS60132280A	1985-07-15

Other References: