Image Gradation, Graininess and Sharpness in Television and Motion-Picture Systems

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: The theory of image formation and analysis is formulated in Section A as an “aperture theory” applied to optical and electrical image-forming systems. It is shown that the properties and combination of “apertures” (point-images) can be described in the space domain by transmittance functions and in the frequency domain by their Fourier spectra (sine-wave response). The mathematical formulation demonstrates that the basic operation of image formation and analysis is a successive integration of the products of two functions, letting one function “scan” the other function, mathematically termed “convolution.” The equivalent passband N<inf>6</inf> of an aperture or system emerges again as a significant and convenient parameter for specifying their characteristics by a single number.
Publication Date: 1955-11-01
DOI: 10.5594/J17018
Link: https://doi.org/10.5594/J17018
Author(s): Otto H. Schade

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Otto H. Schade; Image Gradation, Graininess and Sharpness in Television and Motion-Picture Systems, SMPTE Journal ( Volume: 64, Issue: 11, November 1955); SMPTE, 1955. Available at https://doi.org/10.5594/J17018

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Otto H. Schade; Image Gradation, Graininess and Sharpness in Television and Motion-Picture Systems, SMPTE Journal ( Volume: 64, Issue: 11, November 1955); SMPTE, 1955. Available at https://doi.org/10.5594/J17018

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<span class="citation">Otto H. Schade; <cite>Image Gradation, Graininess and Sharpness in Television and Motion-Picture Systems</cite>, SMPTE Journal ( Volume: 64, Issue: 11, November 1955); SMPTE, 1955. Available at <a href="https://doi.org/10.5594/J17018" target="_blank" rel="noopener">https://doi.org/10.5594/J17018</a></span>

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Otto H. Schade; Image Gradation, Graininess and Sharpness in Television and Motion-Picture Systems, SMPTE Journal ( Volume: 64, Issue: 11, November 1955); SMPTE, 1955
doi: 10.5594/J17018
url: https://doi.org/10.5594/J17018

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<li>
Otto H. Schade; <cite id="bib-10-5594-j17018">Image Gradation, Graininess and Sharpness in Television and Motion-Picture Systems</cite>, SMPTE Journal ( Volume: 64, Issue: 11, November 1955); SMPTE, 1955
<span class="doi">10.5594/J17018</span>
</li>