TY - GEN
T1 - Research on the digital test of TV camera's signal to noise ratio
AU - Chen, Lingfeng
AU - Wang, Yue
AU - Zhang, Xiaodi
AU - Lin, Jiaming
PY - 2007
Y1 - 2007
N2 - This paper presents a quick and objective signal-to-noise ratio (SNR) digital test method for TV camera. Through imaging an overall white transparent test chart with high evenness illumination, the fluctuation of the output video signal reveals the existence of the noise. Using the frame grabber to digitalize the analogue video signal to digital image, the noise can be separated and stood out by digital high pass filter and its amplitude is calculated as root-mean-square (RMS) value. Because the frame grabber introduces additional quantization noise to the digital image, the SNR of the original video signal can be calculated after correcting the quantized noise. The SNR digital test system can get an objective measurement as well as high repeatability, and the results obtained are consistent with those produced by industry standard instrument, so it can be used as a replaceable method for camera's SNR testing.
AB - This paper presents a quick and objective signal-to-noise ratio (SNR) digital test method for TV camera. Through imaging an overall white transparent test chart with high evenness illumination, the fluctuation of the output video signal reveals the existence of the noise. Using the frame grabber to digitalize the analogue video signal to digital image, the noise can be separated and stood out by digital high pass filter and its amplitude is calculated as root-mean-square (RMS) value. Because the frame grabber introduces additional quantization noise to the digital image, the SNR of the original video signal can be calculated after correcting the quantized noise. The SNR digital test system can get an objective measurement as well as high repeatability, and the results obtained are consistent with those produced by industry standard instrument, so it can be used as a replaceable method for camera's SNR testing.
KW - Digital test
KW - Signal to noise ratio
KW - TV camera
UR - http://www.scopus.com/inward/record.url?scp=51349107455&partnerID=8YFLogxK
U2 - 10.1109/ICEMI.2007.4351055
DO - 10.1109/ICEMI.2007.4351055
M3 - Conference contribution
AN - SCOPUS:51349107455
SN - 1424411351
SN - 9781424411351
T3 - 2007 8th International Conference on Electronic Measurement and Instruments, ICEMI
SP - 3866
EP - 3869
BT - 2007 8th International Conference on Electronic Measurement and Instruments, ICEMI
T2 - 2007 8th International Conference on Electronic Measurement and Instruments, ICEMI
Y2 - 16 August 2007 through 18 August 2007
ER -
