Luminous Landscape Forum
Raw & Post Processing, Printing => Digital Image Processing => Topic started by: Guillermo Luijk on May 22, 2021, 08:19:09 am
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Another synthetic RAW creation exercise: I have decimated (subsampled) several RAW files to build a RAW contact sheet with thumbnails of all of them. The nice thing is that they keep all RAW properties (exposure correction, white balance, colour management, tone mapping,...).
Two different decimation strategies are tested:
(https://1.bp.blogspot.com/-q-2JZ_yL-ZU/YKjqde37thI/AAAAAAAAKk4/wHRmOJkJ0F03J7DEcRS05gb85KHUPpIxgCLcBGAsYHQ/s16000/decimation.gif)
This is how they compare (spatial uniform distribution works best as expected):
(https://1.bp.blogspot.com/-cPOCnYGCqZ4/YKjnYwsewmI/AAAAAAAAKkc/QvDVJfrPPL40aywPSXnikqmxlaEesnJUgCLcBGAsYHQ/s16000/decimation2.png)
The result:
(https://1.bp.blogspot.com/-ZCpYsIw4Uu0/YKjlkdPQ47I/AAAAAAAAKkQ/c1z8MGwpZH4Yc5oln8XiWiTivCGQQL8vQCLcBGAsYHQ/s16000/contactsheet512.jpg) (http://guillermoluijk.com/datosimagensonido/contactsheet1920.jpg)
RAW file for download:
http://guillermoluijk.com/datosimagensonido/rawcontactsheet.dng (http://guillermoluijk.com/datosimagensonido/rawcontactsheet.dng)
Complete article giving more detail: 'CREATING A CONTACT SHEET IN RAW' (https://www.overfitting.net/2021/05/creando-una-hoja-de-contactos-en-raw.html)
Other similar synthetic RAW exercises: 'GENERATING A DNG RAW FILE FROM TIFF' (https://www.overfitting.net/2021/04/generando-un-raw-en-formato-dng-partir.html)
Regards