Image analysis – Applications – Manufacturing or product inspection
Patent
1995-10-31
1998-05-19
Boudreau, Leo
Image analysis
Applications
Manufacturing or product inspection
382216, 382146, 348 95, G06K 900
Patent
active
057546797
ABSTRACT:
A machine vision system for identifying the locations of bonding pads on an integrated circuit mounted in a lead frame. The system involves rotating the image of the die to produce an image of the die unrotated with respect to the lead frame (the "counter-rotated image"). The counter-rotated image is searched with corner templates of the bonding pad. A set of possible candidate bonding pads is created from the location of corner templates found during the search. The set is then scored utilizing matching criteria. The best candidate is selected from the set based upon the candidates' scores. The location of the bonding pad is then generated from the best candidate's corner template locations. The invention can be beneficially applied to locate bonding pads during wire bonding, as well as other machine vision applications.
REFERENCES:
patent: 3936800 (1976-02-01), Ejiri et al.
patent: 4115702 (1978-09-01), Nopper
patent: 4115762 (1978-09-01), Akiyama et al.
patent: 4200861 (1980-04-01), Hubach et al.
patent: 4441206 (1984-04-01), Kuniyoshi et al.
patent: 4688088 (1987-08-01), Hamazaki et al.
patent: 4736437 (1988-04-01), Sacks et al.
patent: 4783826 (1988-11-01), Koso
patent: 4860374 (1989-08-01), Murakami et al.
patent: 4876728 (1989-10-01), Roth
patent: 4922543 (1990-05-01), Ahlbom et al.
patent: 4955062 (1990-09-01), Terui
patent: 4959898 (1990-10-01), Landman et al.
patent: 4962423 (1990-10-01), Yamada et al.
patent: 5073958 (1991-12-01), Imme
patent: 5081656 (1992-01-01), Baker et al.
patent: 5086478 (1992-02-01), Kelly-Mahaffey et al.
patent: 5113565 (1992-05-01), Cipolla et al.
patent: 5133022 (1992-07-01), Weideman
patent: 5134575 (1992-07-01), Takagi
patent: 5206820 (1993-04-01), Ammann et al.
patent: 5265173 (1993-11-01), Griffin et al.
patent: 5371690 (1994-12-01), Engel et al.
patent: 5475766 (1995-12-01), Tsuchiya et al.
patent: 5495537 (1996-02-01), Bedrosian et al.
patent: 5532739 (1996-07-01), Garakani et al.
patent: 5566877 (1996-10-01), McCormack
patent: 5602937 (1997-02-01), Bedrosian et al.
Koljonen Juha
Michael David
Tosa Yasunari
Boudreau Leo
Cognex Corp.
Mehta Bhavesh
Powsner David J.
LandOfFree
Image rotating method for locating bond pads in an image does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Image rotating method for locating bond pads in an image, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image rotating method for locating bond pads in an image will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1861492