Patent ID: 9420205
Filing Date: 2016-08-16
CPC Classification: G06K,G06T,H04N

Claim Text:
1. A method of acquiring images of an object arranged on a supporting surface comprising: providing at least an optical image acquisition apparatus of said object having an optical axis; in a work step of said optical image acquisition apparatus processing an acquired image for correcting a possible perspective distortion of said image; extracting from said processed image at least a feature of said object; associating a known reference plane with said object and in a configuration step of said optical image acquisition apparatus preceding said work step, obtaining a relative inclination between said reference plane and said optical axis; said processing comprising identifying a preset processing mode as a function of said relative inclination and applying said preset processing mode for correcting said possible perspective distortion, wherein said obtaining a relative inclination comprises obtaining a respective inclination of said reference plane with respect to gravity and of said optical axis with respect to gravity and calculating said relative inclination from said respective inclinations, wherein said object is a box shaped body, provided with an upper face and side faces that are orthogonal to one another, said reference plane relative to a face of said box shaped body, wherein said identifying a preset processing mode comprises selecting a processing mode from a plurality of different processing modes and associating a different geometrical transformation with each processing mode, and wherein said supporting surface is horizontal, said relative inclination corresponds to said inclination of said optical axis with respect to gravity and in a Cartesian reference system said inclination is defined only by a preset angle between said optical axis and a vertical axis, and comprising applying a geometrical transformation relative to said preset angle for acquiring images of a lateral front face of the object, if said preset angle is less than a respective threshold value, in particular 45°.