Patent ID: 7233346
Filing Date: 2007-06-19
Classification: G01N,H04N

Abstract:
1. A method of generating a differential image of an object in a light scattering medium, comprising the steps of: illuminating a portion of said light scattering medium with a single burst of illuminating light to generate reflected light therefrom; providing a charge generating photosensitive device in the path of said reflected light; activating said charge generating photsensitive device for a period of time during which a portion of said reflected light is collected by said charge generating photosensitive device in the form of a generated charge that is indicative of an image each instant of time during said period of time; providing a first charge storing device and a second charge storing device, each of which is independently operatively coupled to said charge generating photosensitive device; storing, on said first charge storing device, said generated charge present on said charge generating photosensitive device during a first part of said period of time wherein a first image is defined; storing, on said second charge storing device, said generated charge present on said charge generating photosensitive device during a remaining part of said period of time wherein a second image is defined; and generating a difference between (i) said generated charge associated with said first part of said period of time and (ii) said generated charge associated with said remaining part of said period of time.