File:Hemispherical photography-methodological paper.pdf
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Summary[edit]
| Description |
English: This contribution provides a literature overview concerning minimising the two main error sources at shooting
and evaluating hemispherical photographs with the aid of the software Gap Light Analyser 2.0. It deals with materialisation of the process in which these phenomena arise. The point is at determining the exposure time and thresholding (determining the optimum brightness value for the pixel as the threshold for distinguishing between the foliage and the sky patches on a hemispherical photograph).Slovenčina: Príspevok uvádza literárne poznatky o minimalizovaní dvoch hlavných zdrojov chýb pri zachytávaní a
vyhodnocovaní hemisférických snímok využitím počítačového softvéru Gap Light Analyser 2.0, respektíve o zobjektivizovaní procesu, pri ktorom vznikajú. Jedná sa o určenie expozičného času a „tresholding" (stanovení optimálnej hodnoty jasu obrazového bodu – pixelu ako hranice za účelom odlíšenia olistenia od častí oblohy na hemisférickej fotografii). Objektívny spôsob určenia hodnoty „treshold" ponúka program SideLook 1.1. Za najvhodnejší spôsob na určenie hodnoty expozičného času, ktorá maximalizuje kontrast medzi oblohou a olistením je jeho zvýšenie oproti hodnote zmeranej z nezakrytej oblohy o dva kroky (pri nezmenenej hodnote clony). |
| Date | |
| Source | Own work |
| Author | Benjamín Jarčuška |
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Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License. |
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| current | 14:21, 8 October 2008 |  | 1,239 × 1,752, 4 pages (397 KB) | Benjamín Jarčuška (talk | contribs) | {{Information |Description={{en|1=This contribution provides a literature overview concerning minimising the two main error sources at shooting and evaluating hemispherical photographs with the aid of the software Gap Light Analyser 2.0. It deals with mat |
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