System and method for evaluating a machined surface of a...

Details System and method for evaluating a machined surface of a... System and method for evaluating a machined surface of a...

2005-09-02

2009-08-04

Mariam, Daniel G (Department: 2624)

Image analysis

Applications

Manufacturing or product inspection

C382S108000, C382S194000, C382S218000, C382S308000, C348S086000, C348S092000, C348S128000

Reexamination Certificate

active

07570794

ABSTRACT:
A method and system are provided for non-contact evaluation of a machined surface of a cast-metal part, including a vision-based porosity inspection station. A digital image of the machined surface is acquired, oriented and scaled to an XY coordinate system, filtered, and inverted. A second image is generated with known design surface features eliminated. Each pixel of the inverted digital image is XOR-compared with a corresponding pixel of the second image. Identified common surface features common to both images is analyzed statistically for conformance to a threshold. A defect is identified as any identified surface feature common to both images which exceeds the threshold. The system moves the part for further processing if a statistical analysis of defects indicates an acceptable component, and alternatively, removes the part from further processing if the analysis indicates a flawed component.

REFERENCES:
patent: 4519041 (1985-05-01), Fant et al.
patent: 4555798 (1985-11-01), Broadbent et al.
patent: 4616603 (1986-10-01), Kubis et al.
patent: 4845558 (1989-07-01), Tsai et al.
patent: 4926452 (1990-05-01), Baker et al.
patent: 5081656 (1992-01-01), Baker et al.
patent: 5850466 (1998-12-01), Schott
patent: 6157736 (2000-12-01), Jodoin et al.
patent: 6839457 (2005-01-01), Azuma et al.
patent: 2002/0088952 (2002-07-01), Rao et al.
patent: 2005/0220335 (2005-10-01), Budd

Affiliated with

Also associated with

Rating

System and method for evaluating a machined surface of a... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System and method for evaluating a machined surface of a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for evaluating a machined surface of a... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4062667