CA2319911A1 - Apparatus and method for segmenting and classifying image data - Google Patents

Apparatus and method for segmenting and classifying image data Download PDF

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Publication number
CA2319911A1
CA2319911A1 CA002319911A CA2319911A CA2319911A1 CA 2319911 A1 CA2319911 A1 CA 2319911A1 CA 002319911 A CA002319911 A CA 002319911A CA 2319911 A CA2319911 A CA 2319911A CA 2319911 A1 CA2319911 A1 CA 2319911A1
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Canada
Prior art keywords
image
image data
windows
runs
segmenting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002319911A
Other languages
French (fr)
Other versions
CA2319911C (en
Inventor
Zhigang Fan
Kathleen Ryall
Jeng-Nan Shiau
Shriram Revankar
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xerox Corp
Original Assignee
Zhigang Fan
Xerox Corporation
Kathleen Ryall
Jeng-Nan Shiau
Shriram Revankar
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US08/686,803 external-priority patent/US5850474A/en
Application filed by Zhigang Fan, Xerox Corporation, Kathleen Ryall, Jeng-Nan Shiau, Shriram Revankar filed Critical Zhigang Fan
Publication of CA2319911A1 publication Critical patent/CA2319911A1/en
Application granted granted Critical
Publication of CA2319911C publication Critical patent/CA2319911C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

A method and apparatus for segmenting image data into windows and for classifying the windows as typical image types includes making two passes through the image data. The method includes a step of making a first pass through the image data to identify windows and to record the beginning points and image types of each of the windows, and a step of making a second pass through the image data to label each of the pixels as a particular image type. The invention also includes a macro-detection method and apparatus for separating a scanline of image data into edges and image runs and for classifying each of the edges and image runs as standard image types. In the macro-detection method, image runs and edges are classified based on micro-detection results and based on image types of adjacent image runs.
CA002319911A 1996-07-26 1997-05-21 Apparatus and method for segmenting and classifying image data Expired - Fee Related CA2319911C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/686,803 US5850474A (en) 1996-07-26 1996-07-26 Apparatus and method for segmenting and classifying image data
US08/686,803 1996-07-26
CA002205764A CA2205764C (en) 1996-07-26 1997-05-21 Apparatus and method for segmenting and classifying image data

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA002205764A Division CA2205764C (en) 1996-07-26 1997-05-21 Apparatus and method for segmenting and classifying image data

Publications (2)

Publication Number Publication Date
CA2319911A1 true CA2319911A1 (en) 1998-01-26
CA2319911C CA2319911C (en) 2005-05-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA002319911A Expired - Fee Related CA2319911C (en) 1996-07-26 1997-05-21 Apparatus and method for segmenting and classifying image data

Country Status (1)

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CA (1) CA2319911C (en)

Also Published As

Publication number Publication date
CA2319911C (en) 2005-05-03

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