http://de.evo-art.org/index.php?action=history&feed=atom&title=Amplitude_spectra_of_natural_images 2026-05-01T01:50:08Z Versionsgeschichte dieser Seite in de_evolutionary_art_org MediaWiki 1.27.4 http://de.evo-art.org/index.php?title=Amplitude_spectra_of_natural_images&diff=1328&oldid=prev 2014-11-15T12:05:24Z

<p></p> <table class="diff diff-contentalign-left" data-mw="interface"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr style='vertical-align: top;' lang='de'> <td colspan='2' style="background-color: white; color:black; text-align: center;">← Nächstältere Version</td> <td colspan='2' style="background-color: white; color:black; text-align: center;">Version vom 15. November 2014, 12:05 Uhr</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Zeile 1:</td> <td colspan="2" class="diff-lineno">Zeile 1:</td></tr> <tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">Tolhurst, D., Tadmor, Y., Chao, T. (1992). Amplitude spectra of natural images. Ophthalmic &amp; Physiological Optics, 12(2): 229–232. http://onlinelibrary.wiley.com/store/10.1111/j.1475-1313.1992.tb00296.x/asset/j.1475-1313.1992.tb00296.x.pdf?v=1&amp;t=i1tknrpu&amp;s=57ff3ed2aef3ae75e0964d2c4e95d18f51303c5e</del></div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>&#160;</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>== Reference ==</div></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>== Reference ==</div></td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">Tolhurst, D., Tadmor, Y., Chao, T. (1992). Amplitude spectra of natural images. Ophthalmic &amp; Physiological Optics, 12(2): 229–232. </ins></div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>== DOI ==</div></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>== DOI ==</div></td></tr> </table>

Gbachelier http://de.evo-art.org/index.php?title=Amplitude_spectra_of_natural_images&diff=1327&oldid=prev 2014-11-15T12:04:37Z

<p>‎<span dir="auto"><span class="autocomment">Links</span></span></p> <table class="diff diff-contentalign-left" data-mw="interface"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr style='vertical-align: top;' lang='de'> <td colspan='2' style="background-color: white; color:black; text-align: center;">← Nächstältere Version</td> <td colspan='2' style="background-color: white; color:black; text-align: center;">Version vom 15. November 2014, 12:04 Uhr</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l68" >Zeile 68:</td> <td colspan="2" class="diff-lineno">Zeile 68:</td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>== Links ==</div></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>== Links ==</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>=== Full Text === &#160;</div></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>=== Full Text === &#160;</div></td></tr> <tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">[extern file]</del></div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">http://onlinelibrary.wiley.com/doi/10.1111/j.1475-1313.1992.tb00296.x/pdf</ins></div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[intern file]]</div></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[intern file]]</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>=== Sonstige Links ===</div></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>=== Sonstige Links ===</div></td></tr> </table>

Gbachelier http://de.evo-art.org/index.php?title=Amplitude_spectra_of_natural_images&diff=1326&oldid=prev 2014-11-15T12:04:01Z

<p>Die Seite wurde neu angelegt: „Tolhurst, D., Tadmor, Y., Chao, T. (1992). Amplitude spectra of natural images. Ophthalmic &amp; Physiological Optics, 12(2): 229–232. http://onlinelibrary.wiley…“</p> <p><b>Neue Seite</b></p><div>Tolhurst, D., Tadmor, Y., Chao, T. (1992). Amplitude spectra of natural images. Ophthalmic &amp; Physiological Optics, 12(2): 229–232. http://onlinelibrary.wiley.com/store/10.1111/j.1475-1313.1992.tb00296.x/asset/j.1475-1313.1992.tb00296.x.pdf?v=1&amp;t=i1tknrpu&amp;s=57ff3ed2aef3ae75e0964d2c4e95d18f51303c5e<br /> <br /> == Reference ==<br /> <br /> == DOI ==<br /> http://dx.doi.org/10.1111/j.1475-1313.1992.tb00296.x <br /> <br /> == Abstract ==<br /> Several studies have suggested that the amplitude spectra of photographs of tiatural scenes are remarkably<br /> similar and have the form:<br /> <br /> amplitude spatial frequency^(-1.0)<br /> <br /> This is, of course, a straight line with slope of —1.0 when plotted on double logarithmic coordinates. We<br /> have examined the amplitude spectra of 135 digitized photographs of natural scenes and have found that<br /> relatively few images conform exactly to the suggestion. About 25yi&gt; of the images in our sample have<br /> spectra which show significant curvature when plotted on log-log coordinates. The best-fitting regression<br /> lines have slopes that range from —0.8 to —1.5; the average slope is - 1.2, rather steeper than previously<br /> suggested.<br /> <br /> == Extended Abstract ==<br /> <br /> == Bibtex == <br /> <br /> == Used References ==<br /> 1. Carlson. C. R. Thresholds for perceived image sharpness. Photog.<br /> Sci. Kngng. 22,69-71 (1978)<br /> <br /> 2. Burton. G. J. and Moorhcad, 1, R. Color and spatial structure<br /> in natural scenes. AppL Opt. 26, 157-170 (1987|.<br /> <br /> 3. Field, D. J. Relations between the statistics of natural images and<br /> the response properties of cortical cells. J. Opt. Soc. Am. A 4,<br /> 2379 2394(1987).<br /> <br /> 4. Blakemore. C. and Campbell, F. W. On the existence of neurones<br /> in the human vi.sual system seleetively sensitive to the orientation<br /> and size of retina! images. J. Physioi 203. 237-260 (1969).<br /> <br /> 5. Field. D. J. What the statistics of natural images tell us about<br /> visual coding. SPtE 1077.269-276(1989).<br /> <br /> 6. Kni!!, D. C , Field, D. J. and Kersten. D. Human discrimination<br /> of fractal images. J. Opt. Soc. Am. A 1, 1113-1123(1990).<br /> <br /> 7. Tadmor, Y. and Tolhurst, D. J. Is the human visual system<br /> optimized for processing natural images? Perception 19, 398A<br /> (1990).<br /> <br /> 8. Tadmor. Y. and Tolhurst, D. J. The amplitude speelra of natural<br /> images (Abstract). Ophthal. Physiol. Opt. \1. 97 (1992).<br /> <br /> 9. Oppenheim, A. V. and Lim, J. S. The importance of phase in<br /> signals. Proc. IEEE. 69. 529-541 (1981|.<br /> <br /> 10. Piotrowski, L. N. and Campbell, F. W. A demonstration of the<br /> visual importance and flexibility of spatial-frequency amplitude<br /> and phase. Perception II, 337-346(1982).<br /> <br /> 11. Morgan, M. J., Ross. J. and Hayes, A. The relative imporlance of<br /> local phase and local amplitude in patchwise image reconstruction.<br /> Bml. Cyhern. 65, 113-119(1991).<br /> <br /> 12. Brettel, H., Caelli, T., Hilz, R. and Rentschler, I. Modelling<br /> perceptual distortion: amplitude and phase transmission in the<br /> human visual system. Human Neurohiol. 1, 61-67 (1982).<br /> <br /> == Links ==<br /> === Full Text === <br /> [extern file]<br /> <br /> [[intern file]]<br /> <br /> === Sonstige Links ===</div>

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