Charles N Harward

US Patent:

51651017, Nov 17, 1992

Filed:

May 6, 1991

Appl. No.:

7/696004

Inventors:

Kenneth A. Cox - Midlothian VA
Henry M. Dante - Midlothian VA
Charles N. Harward - Midlothian VA
Robert J. Maher - Midlothian VA

Assignee:

Philip Morris Incoporated - New York NY

International Classification:

G06K 900

US Classification:

382 8

Abstract:

The appearance of a product is determined to be acceptable or unacceptable by computing a discriminant function or image from a plurality of two-dimensional images of products of the kind to be inspected. A two-dimensional image of the product is then formed and processed using the discriminant image to produce an output value which can be compared to a predetermined value used in computing the discriminant image. If the output value deviates from the predetermined value by more than a predetermined amount, the product has been found to have an unacceptable appearance.

US Patent:

49281810, May 22, 1990

Filed:

Nov 21, 1988

Appl. No.:

7/274029

Inventors:

Charles N. Harward - Midlothian VA

Assignee:

Philip Morris Incorporated - New York NY

International Classification:

H04N 566

US Classification:

358230

Abstract:

Input image features of predetermined brightness are enhanced in an output image by processing the input image using a liquid crystal display in conjunction with specially oriented light polarizing devices.