JPS6418004A - Center tracking of slit light - Google Patents
Center tracking of slit lightInfo
- Publication number
- JPS6418004A JPS6418004A JP62175224A JP17522487A JPS6418004A JP S6418004 A JPS6418004 A JP S6418004A JP 62175224 A JP62175224 A JP 62175224A JP 17522487 A JP17522487 A JP 17522487A JP S6418004 A JPS6418004 A JP S6418004A
- Authority
- JP
- Japan
- Prior art keywords
- image
- slit light
- density data
- center
- slit
- 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
Abstract
PURPOSE:To obtain the art of executing the tracking of a slit light with a high reliability, by taking an image obtained with an ITV camera once into a RAM memory of an image processor being converted to a density data to perform the processing of the data. CONSTITUTION:The center of an image of a slit light as irradiated onto an object from a slit light source 1 is tracked. A density data of an image obtained with an ITV camera 2 is stored into a RAM memory within an image processor 8 to set a window for inspection (size: mXn pixel) based on the results with the center S0 thereof as starting point. At the same time, the threshold of the density data is determined and the density data at points P0n and Pmn at the right end of the window 5 is judged by the threshold to detect the final end of an image of the slit light. This enables fast and highly accurate processing even for a slit image with a large unevenness in the brightness.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62175224A JPS6418004A (en) | 1987-07-14 | 1987-07-14 | Center tracking of slit light |
US07/218,311 US4978224A (en) | 1987-07-14 | 1988-07-12 | Method of and apparatus for inspecting mounting of chip components |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62175224A JPS6418004A (en) | 1987-07-14 | 1987-07-14 | Center tracking of slit light |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6418004A true JPS6418004A (en) | 1989-01-20 |
Family
ID=15992457
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62175224A Pending JPS6418004A (en) | 1987-07-14 | 1987-07-14 | Center tracking of slit light |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6418004A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014057580A1 (en) * | 2012-10-12 | 2014-04-17 | 株式会社ニレコ | Shape measuring method and shape measuring device |
-
1987
- 1987-07-14 JP JP62175224A patent/JPS6418004A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014057580A1 (en) * | 2012-10-12 | 2014-04-17 | 株式会社ニレコ | Shape measuring method and shape measuring device |
JP5832520B2 (en) * | 2012-10-12 | 2015-12-16 | 株式会社ニレコ | Shape measuring method and shape measuring apparatus |
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