The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 29, 2002
Filed:
Apr. 20, 2000
Thomas A. Albert, Pittsfort, NY (US);
Frederick N. Miller, Louisville, KY (US);
Abstract
A time-varying image of a circulating venue containing a flow of particles is generated by imaging using a video camera and a digital frame grabber. Spatio-temporal intensity gradients within each of the images are generated. Particles are then identified within the images. A particle is matched with a corresponding identical particle from other images using, for example, a heuristic equation that measures similarity of shape, size, and position. The distance of translation of the matched particle from one image to another is determined. Leukocyte velocity is determined by dividing the translation distance by the time differential between the images. The first five statistical moments of frequency distribution of the velocity may also be determined.