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:
Sep. 11, 2001
Filed:
Aug. 07, 1998
Masaki Ishisaka, Himeji, JP;
Sysmex Corporation, Hyogo, JP;
Abstract
The boundary of an object is determined based on its optically captured image by: (a) converting a density data of each of a plurality of pixels forming the captured image into a binary signal; (b) converting the binary signal into a neighbor pixel state value so that only the pixels located on the boundary r in the interior of the object have a value corresponding to the binary signals of the surrounding pixels; (c) normalizing the neighbor pixel state value using an absolute chain direction value of a previous chain direction; (d) obtaining a relative chain direction value for a pixel located on the boundary of the object in the image relative to the direction from which the chain has proceeded, with reference to the neighbor pixel state value of the pixel; (e) calculating an absolute chain direction value of a next chain direction on the basis of the relative chain direction value; and (f) repeating the steps (c) to (e) for each pixel located on the boundary to trace the boundary of the object for determining the boundary.