Capturing a scan line with two colors

摘要

A scanner is disclosed. The scanner has three lights with three different colors. The scanner uses only two of the three lights when capturing each scan line. The scanner does this by alternating the use of two of the three colors every other scan line.

主权项

1. A scanner, comprising:
a broadband sensor to sense light from an object to be scanned; three lights to direct light onto the object to be scanned, each light producing light of a different color; a controller to control the scanner, the controller coupled to the three lights and the broadband sensor, the controller to capture a plurality of scan lines from the object to be scanned; the controller using a first color of light to capture each of the plurality of scan lines; the controller alternating between a second color of light and a third color of light to capture the plurality of scan lines, such that each of the plurality of scan lines has been captured using only two of the three different colors of lights, wherein each of the plurality of scan lines comprises pixel values for the two colors used to illuminate the scan line, and where the controller reconstructs pixel values for a third color for each scan line, wherein the third color is the color of light that was not used to illuminate that scan line.