Patent ID: 8565487

Claim:
A system for determining a kinetic parameter of an object, the system comprises: a target, that comprises a calibration facilitating pattern and which is coupled to the object, so that a movement of the target correlates with a movement of the object; wherein the calibration facilitating pattern comprises multiple differently colored segments that are delimited by boundaries; an optical source, which is adapted to illuminate the target; an optical sensor, adapted to generate detection signals in response to light received from the target; wherein the detection signals form images of the target; and a processor, adapted to determine a calibration parameter and the kinetic parameter in response to the detection signals that are indicative of a shift of at least one boundary between different images of the target and to detection signals reference information; wherein the calibration parameter is a measure of an accumulative error which accrued during a span of a measurement of the kinetic parameter of the object.