Acta Optica Sinica, Volume. 25, Issue 7, 918(2005)
Method for Modulation Transfer Function Measurement of Linear Sampled Imaging System Using Random Bar Targets
The measurement of modulation transfer function (MTF) of the sampled imaging opto-electronic system is rather complex and irrepeatable for their shift-variant characteristics. Based on the theory of statistical optics and stochastic process, the correlation relationship of spatially discrete random signal pattern and its correspoding image through a linear optical imaging system are analyzed. A method using random bar pattern for modulation transfer function measurement is proposed, and the emulational experimental result is demonstrated. The random bar pattern test method reduces the effect of sample-scene phasing of sampled imaging device in statistical sense. This method is also adapted to the MTF measurement of commonly shift-invariant optical system and is expected to greatly improve the flexibilities and automation degree of MTF testing.
Get Citation
Copy Citation Text
[in Chinese], [in Chinese]. Method for Modulation Transfer Function Measurement of Linear Sampled Imaging System Using Random Bar Targets[J]. Acta Optica Sinica, 2005, 25(7): 918