TY - JOUR
AU - Mitani, Kohji
AB - The authors propose a technique for performing real-time correction of the gain nonuniformity at output taps in an area-parallel-type frame transfer CCD (FT-CCD) by incorporating a reference optical signal. This technique activates a reference light source every vertical blanking (V-blanking) period, during which time the image sensor is shielded from incident light, and uses that output signal level to automatically adjust the gain of each block. For this method, a color-separation prism with reference light sources has been developed. In addition, to obtain a reference signal from the reference light source emitting for about 11&percent; of the V-blanking period, a new method of accumulating the electron signal generated by the reference light source is described for the CCD. The results of a camera experiment using an 8-million-pixel CCD are described, and the compensation accuracy of this method is discussed.
TI - Real-time gain correction method using a reference light for an area-parallel-type frame-transfer charge-coupled device with multi-output taps
JO - Journal of Electronic Imaging
DO - 10.1117/1.2155338
DA - 2006-01-01
UR - https://www.deepdyve.com/lp/spie/real-time-gain-correction-method-using-a-reference-light-for-an-area-egfWr2vt06
SP - 013001
EP - 013001-8
VL - 15
IS - 1
DP - DeepDyve
ER -