Patent ID: 8501015
Filing Date: 2013-08-06
Classification: B04B,G01N,G06T,H04N

Abstract:
1. A method for controlling a density centrifuge blood processing system for separating fluid components and having a separation chamber rotating about a central rotation axis, comprising: illuminating an observation region on said density centrifuge blood processing system, thereby generating light transmitted, scattered or both from said observation region; collecting at least a portion of said light transmitted, scattered or both from said observation region into a two-dimensional detector as a field of pixels, each pixel having an intensity; and placing the two-dimensional detector to receive and detect said light transmitted, scattered or both from said observation region provided by said light collection element, as a field of pixels, each pixel having an intensity; processing, in a computational apparatus, for a particular image, a plurality of image processing procedures in series to distinguish one or more phase boundaries, said computational apparatus being programmed with a control program that causes said control apparatus to determine a set of gradients of said pixel intensities, and to assign a value representing a phase boundary to pixel locations for said gradients which exceed adjacent gradients in a selected direction and to assign an intensity representing a phase to pixel locations for said gradients which do not exceed adjacent gradients in said selected direction.