Patent ID: 9626591
Date: 2017-04-18
CPC Classifications: G06F,G06K,G06T,H04N

Claim:
1. A method for analyzing captured images, the method comprising: capturing a first plurality of digital images of a field of view using a camera and at least one light source to illuminate the field of view at one or more illumination powers, the capturing of the first plurality of digital images including: capturing a first digital image when the at least one light source is at a first illumination power; capturing a second digital image when the at least one light source is at a second illumination power; and capturing a third digital image when the at least one light source is at the first illumination power; identifying pixels of the first plurality of digital images that correspond to an object rather than to a background, wherein the pixels corresponding to the object are identified based on a difference between the second digital image and the first digital image and a difference between the second digital image and the third digital image; and wherein the identifying of the pixels of the first plurality of digital images further comprises: forming a first difference image based upon the difference between the second digital image and the first digital image; forming a second difference image based upon the difference between the second digital image and the third digital image; and determining a third difference image, wherein each pixel of the third difference image comprises a pixel of a smaller pixel value between a corresponding pixel in the first difference image and a corresponding pixel in the second difference image and constructing a model of the object based on the identified pixels, the model including a position and a shape of the object.