JPS5582379A - Edge processing method in picture processing - Google Patents
Edge processing method in picture processingInfo
- Publication number
- JPS5582379A JPS5582379A JP15592878A JP15592878A JPS5582379A JP S5582379 A JPS5582379 A JP S5582379A JP 15592878 A JP15592878 A JP 15592878A JP 15592878 A JP15592878 A JP 15592878A JP S5582379 A JPS5582379 A JP S5582379A
- Authority
- JP
- Japan
- Prior art keywords
- level
- picture
- rom
- data
- input
- 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
- 238000003672 processing method Methods 0.000 title 1
- 238000000605 extraction Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000001360 synchronised effect Effects 0.000 abstract 1
Landscapes
- Image Processing (AREA)
Abstract
PURPOSE: To make edge emphasis and edge extraction easy by using an ROM having N-number addresses to convert picture data, which can be expressed with N- number gradations, to one output of the half-tone level.
CONSTITUTION: Input data of N-level digitized picture densities from a scanner are applied to one ROM as addresses A0WA3, and data transfer clock RD synchronized with input data is used as a strobe to read data D0WD3 from the ROM. In case of input data of a picture expressed with 16 gradations, contents of the ROM are as shown in figure 4 for the edge processing where levels 0W5, levels 12W15 and levels 6W11 are a low level, a high level and a half tone respectively. By this method, input of picture data of level 5 is converted to the output of level 0 by reading contents of address 5 immediately, and similarly, input of level 7 is converted to the output of level 1.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15592878A JPS5582379A (en) | 1978-12-18 | 1978-12-18 | Edge processing method in picture processing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15592878A JPS5582379A (en) | 1978-12-18 | 1978-12-18 | Edge processing method in picture processing |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5582379A true JPS5582379A (en) | 1980-06-21 |
Family
ID=15616569
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15592878A Pending JPS5582379A (en) | 1978-12-18 | 1978-12-18 | Edge processing method in picture processing |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5582379A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06266826A (en) * | 1992-07-31 | 1994-09-22 | E I Du Pont De Nemours & Co | Raster picture processing method and device having picture element mapping enabling picture border density distribution |
-
1978
- 1978-12-18 JP JP15592878A patent/JPS5582379A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06266826A (en) * | 1992-07-31 | 1994-09-22 | E I Du Pont De Nemours & Co | Raster picture processing method and device having picture element mapping enabling picture border density distribution |
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