Patent ID: 8717421

Claim:
A system for automatic calibration of a pair of cameras to a robot arm, comprising: a computing device with a microprocessor, wherein the microprocessor is programmed to calibrate the cameras with respect to the robot arm with a light source attached to one end by: moving the robot arm to a position where the light source on the robot arm is visible to both cameras; taking digital pictures with both cameras when the light source is on, the digital pictures including the end of the robot arm and the light source, and transferring the pictures to the computing device; without moving the robot arm, turning the light source off and taking digital pictures with both cameras, the digital pictures including the end of the robot arm and the light source, and transferring the pictures to the computing device; subtracting the pictures with the light source off from the pictures with the light source on to get an image of the light produced by the light source alone; and repeating the above steps for a plurality of different positions of the robot arm.