https://wiki.panotools.org/api.php?action=feedcontributions&user=Eduardo+Hutter&feedformat=atomPanoTools.org Wiki - User contributions [en]2024-03-28T22:52:43ZUser contributionsMediaWiki 1.35.3https://wiki.panotools.org/index.php?title=Historical:SoC2007_Supporters&diff=7878Historical:SoC2007 Supporters2007-03-06T17:29:42Z<p>Eduardo Hutter: /* Individuals */</p>
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<div>'''instructions'''<br />
* if you don't have one yet, [http://wiki.panoramatools.org/Special:Userlogin open a Panotools wiki account]<br />
* Log in with your Panotools wiki account<br />
* find below which category better fits you<br />
* click on the edit link next to the category title<br />
* add your entry as a bullet point at the end of the page (see the examples above you)<br />
* enter your name, place and role in the panoramic community<br />
* if possible, add a link to some relevant panoramic work next to your name<br />
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==The following organizations and users support the Open Source developers in their efforts to become a mentoring organization for Google's Summer of Code 2007:==<br />
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===Organizations===<br />
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===Individuals===<br />
* Yuval Levy, Québec, Canada, photographer [http://www.photopla.net/060825montpellier/]<br />
* Bruno Postle, UK. Designer/engineer, user of [[panotools]] and [[hugin]]. Panotools wiki contributor [http://www.bruno.postle.net/panorama/].<br />
* Roger Williams, Japan. Photographer [http://www.usefilm.com/member/roger/], user of [[panotools]].<br />
* Jeffrey Martin, Czech Republic. Photographer, user of [[panotools]] and [[hugin]]. [http://www.prague360.com]<br />
* Ken Turkowski, United States, scientist and developer of panorama software, including [[QuickTime VR]] and [[DeFish]]. [http://www.worldserver.com/turk], [http://www.realitypixel.com]<br />
* Mark Fink, United States, photographer [http://northernlight.net], Universal pano head developer [http://pinnacle-vr.com]<br />
* Toni Garbasso, Roma, Italy, photographer [http://www.studioargento.com/]<br />
* Pip Price, Photographer, UK, [http://pipsqueakmedia.biz], creator of Peak District View [http://peakdistrictview.com]<br />
* Claudio Lanconelli, Ravenna, Italy, photographer, user of [[hugin]] [http://www.viaggioinromagna.it]<br />
* Jim Watters, Canada, Photographer [http://photocreations.ca] and software developer and contributer to [[panotools]]<br />
* Luis Roberto De León, Monterrey, Mexico. photographer and multimedia creator (www.solucionesvisuales.com)<br />
* Milko Amorth, Vancouver, Canada, VR Photography [http://www.vrcanada.ca/]<br />
* Pierre Converset, Séné, France, peintre et photographe.<br />
* Geoffrey Morelle, Tourcoing, France, Photographer [http://www.geoffreymorelle.com/]<br />
* John J Housser, Canada, VR Photographer [http://housser.ca/], User of [[panotools]] and [[hugin]] in panoramic photography workshops using open-source software [http://housser.ca/?content=view_vr&id=152]<br />
* Waleed Nassar, Cairo, Egypt, VR Photographer [http://www.madeena360.com/]<br />
* Jérôme Muffat-Méridol, Paris, France, Photographer [http://www.webphotomag.com/]<br />
* Luca Zampieri, Roma, Italy, photographer [http://www.studiothema.it/]<br />
* Uri Cogan, Salt Spring Island, BC, Canada, Artist [http://www.uricogan.com/]<br />
* Vincent Massy, Grimentz, Suisse, utilisateur panotools<br />
* Sebastian Nowozin, Germany. Author of autopano-sift [http://cs.tu-berlin.de/~nowozin/autopano-sift/]<br />
* Eric Verdier, Zacatecas, Mexico, architecte photographer,[http://www.ledetour.com/]<br />
* Eduardo Hutter, Montreal, Quebec, Canada. Panotools user</div>Eduardo Hutterhttps://wiki.panotools.org/index.php?title=Contrast_Blending&diff=6369Contrast Blending2005-10-15T02:43:18Z<p>Eduardo Hutter: </p>
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<div>We refer to contrast blending as a technique to blend several differently exposed (exposure bracketed) images in order to achieve a higher [[Dynamic range]].<br />
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There are several more or less automatic approaches realized in commercial programs or plugins like [http://www.hdrsoft.com Photomatix] and Fred Miranda's [http://www.fredmiranda.com/DRI/ DRI] or the free photoshop actions from [[Contrast Blending Actions|Erik Krause]].<br />
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Another way to use bracketed exposures is to assemble them into a single [[HDR]] image. This can be done with free [http://projects.ict.usc.edu/graphics/HDRShop/ HDRShop] or new [[Photoshop]] CS2. The problem here is that the HDR image must be compressed to reveal the complete contrast range on a computer monitor. <br />
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This was a major problem for HDRShop since only gamma adjustment or (later) the Reinhard tonemapping plugin existed. It is still a problem for Photoshop CS2, but here the HDR images can at least be converted to 16 bit per channel images with more possibilities. Brian Greenstone wrote a nice tutorial about that: [http://www.panomundo.com/panos/howto/workflow_expbracketing.html]<br />
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There are several tools that can handle HDR images: [[enblend]], [[Hugin]] and [[Nona]] can work with HDR images of different flavours. [[PTViewer]] 3.1 can display HDR images with adaptive dynamic range directly. For Linux there are several open source command line tools available that implement different tone mapping algorithms: [http://www.mpi-sb.mpg.de/resources/pfstools/]<br />
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However, contrast blending can be done completely 'by hand' as described on Michael Reichmann's site - http://www.luminous-landscape.com/tutorials/digital-blending.shtml<br />
or like described in [[A simple approach to HDR-blending]]<br />
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Here is a user comment on Michael's technique:<br />
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"I use the second technique, the Layer Mask approach, and have found that it works quickly and easily, while still leaving much room for tweaking as necessary. The only change I've made in my approach is at the end where I work in Levels instead of curves. I find that sliding the mid-tones to the right helps make the resulting image look more realistic. In some cases, you just have to play around with all three sliders until you get a good blend. I also will reduce the opacity of the top layer down to about 85% as well."<br />
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Mark Fink [http://www.northernlight.net www.northernlight.net]</div>Eduardo Hutter