Images And Noise

A. E. Anderson

doi:10.1117/12.954041

1 February 1975 Images And Noise

A. E. Anderson

Proceedings Volume 0047, Application of Optical Instrumentation in Medicine III; (1975) https://doi.org/10.1117/12.954041
Event: Application of Optical Instrumentation in Medicine III, 1974, Kansas City, United States

Abstract

The ability of the eye to perceive detail in images is a complex function of image contrast, brightness and noise. Image amplifiers can remove the brightness limitation but noise sets the final limit on performance which can be obtained with weak signals. The manner in which weak signal noise limits the performance of imaging systems is reviewed. Image amplifier gains required to remove the masking effect of additive amplifier noise is calculated as function of image contrast. Finally, the limitations of finite system aperture response on overall performance is described. It is concluded that increased resolution capability and displays having greater dynamic range are needed to improve the ability to see fine image detail at low contrast in characteristically noisy x-ray images.

Citation Download Citation

A. E. Anderson "Images And Noise", Proc. SPIE 0047, Application of Optical Instrumentation in Medicine III, (1 February 1975); https://doi.org/10.1117/12.954041

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