Jenkin, Robin B. and Jacobson, Ralph E. and Richardson, Mark A. (2005) Errors due to quantization in MTF determination using sinusoidal targets. Imaging Science Journal, 53 (3). pp. 140-148. ISSN 1368-2199
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Official URL: http://dx.doi.org/10.1179/136821905X50325
A theoretical treatment of the effect of quantization upon the determination of modulation transfer functions (MTF) of digital acquisition devices is initially developed for a noiseless system, when using sinusoidal targets. The analytical work shows that a component due to quantization exists in the measured MTF which increases as the bitdepth of the quantization and the amplitude of the input signal decrease. An expression to estimate this component from parameters describing the input signal and quantizer is derived. Modifications are made to account for quantization and input signal noise, yielding new estimates of the component for single measurements. The estimates were experimentally tested using an analogue-to-digital converter (ADC).
|Additional Information:||Online ISSN 1743-131X|
|Uncontrolled Keywords:||MTF, quantization, digital errors, sine wave|
|Research Community:||University of Westminster > Electronics and Computer Science, School of|
|Deposited On:||05 Mar 2007|
|Last Modified:||07 Jun 2010 14:29|
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