Fiber color grading system

Details Fiber color grading system Fiber color grading system

1998-08-05

2000-03-21

Font, Frank G.

Optics: measuring and testing

Inspection of flaws or impurities

Textile inspection

209509, G01N 2100

Patent

active

060409053

ABSTRACT:
A fiber classing device having a sample window for viewing a fiber sample. A light source provides light that is directed toward and reflected by the fiber sample, producing reflected light. A photo sensitive detector is positioned to receive the reflected light, and it detects lightness, redness, and yellowness of the fiber sample. Processing means assign a preliminary grade to the fiber sample based at least in part on the lightness and yellowness of the fiber sample. The processing means also selectively adjust the preliminary grade to a final grade based at least in part on the redness of the fiber sample. The photo sensitive detector has one or more of a spectrometer, a camera, or a set of three photo diodes. A first photo diode detects light with a wavelength of between about 505 nanometers and about 605 nanometers, corresponding to the lightness of the fiber sample. A second photo diode detects light with a wavelength of between about 430 nanometers and about 530 nanometers, corresponding to the yellowness of the fiber sample. The third photo diode detects light with a wavelength of between about 550 nanometers and about 650 nanometers, corresponding to the redness of the fiber sample. The processing means analyzes the information from the photo sensitive detector to determine the mean redness, variance in lightness, variance in redness, variance in yellowness, contrast in lightness, percent of yellow spots, and contrast in yellowness of the fiber sample. The selective adjustment from the preliminary grade to the final grade is based at least in part on these parameters.

REFERENCES:
patent: 5813542 (1998-09-01), Cohn
Duckett, Cheng, Zapletalova, Watson, Ghorashi, Additional Factors for HVI Color Grading, 1198 Proceedings of the Beltwide Cotton Conference, Jan. 5, 1998.
Duckett, Cheng, Color Grading, Tenth Annual Engineered Fiber Selection System Conference, May 12-14, 1997.
B. Xu, C. Fang, and M.D. Watson, Chromatic Image Analysis for Cotton Trash and Color Measurements, Cotton Quality Measurements Conference, pp. 532-540, 1997.
Zellweger Uster, Uster HVI 900 brochure, date unknown.
Zellweger Uster, Uster LVI brochure, date unknown.

Affiliated with

Also associated with

Rating

Fiber color grading system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fiber color grading system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fiber color grading system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-734852