JPS5595188A - Pattern processor - Google Patents
Pattern processorInfo
- Publication number
- JPS5595188A JPS5595188A JP357979A JP357979A JPS5595188A JP S5595188 A JPS5595188 A JP S5595188A JP 357979 A JP357979 A JP 357979A JP 357979 A JP357979 A JP 357979A JP S5595188 A JPS5595188 A JP S5595188A
- Authority
- JP
- Japan
- Prior art keywords
- contour
- circuit
- pattern
- access
- tracing
- 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.)
- Pending
Links
Landscapes
- Image Processing (AREA)
- Image Analysis (AREA)
Abstract
PURPOSE:To quicken processing by suppressing a frequency of access to white picture element which are originally unneeded to attain access to, by tracing the contour of a pattern. CONSTITUTION:Scanner circuit 4 searches for a pattern stored in memory circuit 1, contour tracing circuit 5 traces the contour of the above-mentioned pattern, and table circuit 6 memorizes the position of the contour of the pattern. Then, discrimination circuit 7 discriminates whether contour picture elements can be erased or not and rewrites the contents of memory circuit 1 according to results of the discrimination. In this circuit constitution, a raster scan on the entire screen is done only once in the 1st-stage operation and in the 2nd-stage operation, the raster scan on the entire screen is not done and a raster scan for the detection of a random contour and contour tracing only are required. As a result, the number of times of access to unneeded white picture elements can greatly be reduced, so that a thinned pattern can be obtained at a high speed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP357979A JPS5595188A (en) | 1979-01-16 | 1979-01-16 | Pattern processor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP357979A JPS5595188A (en) | 1979-01-16 | 1979-01-16 | Pattern processor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5595188A true JPS5595188A (en) | 1980-07-19 |
Family
ID=11561355
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP357979A Pending JPS5595188A (en) | 1979-01-16 | 1979-01-16 | Pattern processor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5595188A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61267880A (en) * | 1985-05-22 | 1986-11-27 | Tech Res & Dev Inst Of Japan Def Agency | Measuring device for feature of picture |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4925825A (en) * | 1972-05-22 | 1974-03-07 |
-
1979
- 1979-01-16 JP JP357979A patent/JPS5595188A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4925825A (en) * | 1972-05-22 | 1974-03-07 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61267880A (en) * | 1985-05-22 | 1986-11-27 | Tech Res & Dev Inst Of Japan Def Agency | Measuring device for feature of picture |
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