Patent ID: 9412025
Filing Date: 2016-08-09
CPC Classification: G06K

Claim Text:
1. A method for classifying differently shaped objects in an image of a scene, wherein a processor can access a background model of the scene, comprising: providing to the processor image data of an object in the scene of at least a section of an airport; the processor determining a foreground mask of the object separate from the background model by combining foreground pixel clusters that are connected, including determining a size of an area occupied by pixels in the foreground mask; the processor determining a single convex hull of the object from the foreground mask and that surrounds the foreground mask, including a size of an area determined by the single convex hull; and the processor classifying the object in the image as being an airplane or not an airplane based on a ratio between the size of the area occupied by pixels in the foreground mask and the size of the area determined by the single convex hull by comparing the ratio with a threshold value and the processor classifying the object as not being an airplane if the ratio is greater than 0.75.