JPS6418004A - Center tracking of slit light - Google Patents

Center tracking of slit light

Info

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
Application number
JP62175224A
Other languages
Japanese (ja)
Inventor
Nobuaki Kakimori
Shunei Morimoto
Makoto Kishimoto
Sachikuni Takahashi
Morihide Osaki
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.)
Sharp Corp
Original Assignee
Sharp Corp
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
Application filed by Sharp Corp filed Critical Sharp Corp
Priority to JP62175224A priority Critical patent/JPS6418004A/en
Priority to US07/218,311 priority patent/US4978224A/en
Publication of JPS6418004A publication Critical patent/JPS6418004A/en
Pending legal-status Critical Current

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.
JP62175224A 1987-07-14 1987-07-14 Center tracking of slit light Pending JPS6418004A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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