Patent ID: 6310964
Filing Date: 2001-10-30
Classification: G01B,G01G,G06T,G07G

Abstract:
A method for characterizing size features of a commodity, said method comprising the steps of:scanning at least one target object illuminated with a light of a first brightness to acquire a first image and scanning said at least one target object illuminated with a light of a second brightness different from said first brightness to acquire a second image, said target objects being produce of a same variety or type and at a same position when said first and second images are acquired, wherein a visual input device is used for receiving a scanned scene image, the scene image including the image of the at least one target object and a background image;scanning at least one target object taking a first digitized image of the at least one target object illuminated at a higher level and taking a second digitized image of the at least one target object illuminated at a lower level;identifying visual characteristics by segmenting the at least one target object from the background image using a processed scene image generated from a combination of the first and second digitized images;identifying visual characteristics associated with said first and second images of the at least one target object in the scene image;segmenting the at least one target image from the background image by comparing said first and second images; andprocessing the segmented target image and classifying said at least one target object, by size, using the identified visual characteristics.