Articulated arm coordinate measuring machine having a color laser line probe

A portable articulated arm coordinate measuring machine (AACMM) for measuring the coordinates of an object in space, comprising:

• a base;
• a manually positionable arm portion coupled to the base and having an end opposite the base;
• a measurement device coupled to the end;
• an electronic circuit that is operable to determine a position of the measurement device relative to a frame of reference;
• a laser line probe operably coupled to the end, the laser line probe having a projector and a camera, the projector being operable to project a line of light at one or more predetermined wavelengths, the camera having a lens assembly optically coupled to a sensor assembly, the sensor assembly having a photosensitive array and a filter disposed between the photosensitive array and the lens assembly, the filter having a plurality of red, green and blue pixels in a predetermined arrangement;
• and
• a controller operably coupled to the laser line probe, the controller being operable to cause the camera to acquire a metrology image and a color image, wherein the controller and the electronic circuit cooperate to determine the three-dimensional coordinates of points on a surface based at least in part on the metrology image and to assign a color to the points based at least in part on the color image;
• wherein the photosensitive array includes a plurality of photosensitive array pixels, each of the plurality of photosensitive array pixels being aligned with one of the filter elements;
• the controller is further operable to receive pixel values from a first portion of the plurality of photosensitive array pixels and interpolate pixel values to a second portion of the plurality of photosensitive array pixels;
• and
• the controller is further operable to determine center of gravity locations based at least in part on the pixel values of the first portion and the second portion of the plurality of photosensitive array pixels.