To reduce effects of undesired infrared light in an imaging system using an infrared light source.
The desired infrared light source is activated and a first set of imaging data is captured during a first image capture interval. The desired infrared light source is then deactivated, and a second set of image data is captured during a second image capture interval. A composite set of image data is then generated by subtracting from first values in the first set of image data corresponding second values in the second set of image data. The composite set of image data thus includes a set of images in which all infrared signals are collected, including both signals resulting from the IR source and other IR signals from subtracted images in which no signals result from the IR light path, excluding data containing signals resulting only from the IR source.
| JPH11224160A | 1999-08-17 | |||
| JPH10177449A | 1998-06-30 | |||
| JPH05249043A | 1993-09-28 | |||
| JP2004134861A | 2004-04-30 |
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Tadashi Ueda