EasyHDR is a
High Dynamic Range
High dynamic range (HDR) is a dynamic range higher than usual, synonyms are wide dynamic range, extended dynamic range, expanded dynamic range.
The term is often used in discussing the dynamic range of various signals such as images, videos, ...
(HDR) image processing software that merges differently exposed photographs into HDR radiance map and
tone maps them. With a single photograph, easyHDR can be used to increase contrast and refresh colors (LDR enhancement mode).
Functionality
EasyHDR is designed for use under
macOS
macOS (; previously OS X and originally Mac OS X) is a Unix operating system developed and marketed by Apple Inc. since 2001. It is the primary operating system for Apple's Mac (computer), Mac computers. Within the market of ...
and
Microsoft Windows. It works on Linux under
Wine
Wine is an alcoholic drink typically made from fermented grapes. Yeast consumes the sugar in the grapes and converts it to ethanol and carbon dioxide, releasing heat in the process. Different varieties of grapes and strains of yeasts are ...
.
Via
dcraw and
LibRaw, easyHDR supports the handling of
raw image files. Lens correction (
distortion
In signal processing, distortion is the alteration of the original shape (or other characteristic) of a signal. In communications and electronics it means the alteration of the waveform of an information-bearing signal, such as an audio s ...
and
chromatic aberration
In optics, chromatic aberration (CA), also called chromatic distortion and spherochromatism, is a failure of a lens to focus all colors to the same point. It is caused by dispersion: the refractive index of the lens elements varies with the ...
) is addressed based on the
LensFun database.
EasyHDR allows for batch processing. To this end, the user may save custom presets for tone mapping.
HDR image processing
The functionality of easyHDR with respect to HDR image processing includes
* image alignment (manual and automatic), compensating for shift, rotation, scale and perspective,
* HDR ghost effect removal,
* noise filtering,
* layers (masking with brushes and gradient tool).
LDR enhancement
In case of a single low-dynamic-range (LDR) photograph, which often is missing details in highlights or shadows, the tone mapping of easyHDR may be used to increase contrast and refresh colors. This is in particular the case when developing
raw images.
file:Eschborn, Versatzstück.JPG, JPG image, as downloaded from the camera
file:Eschborn, Versatzstück easyHDR Standard.jpg, Image generated by ''easyHDR'' (mode "LDR enhancement", preset "standard")
file:Moenchbruchallee Bruecke 0950.JPG, JPG image, as downloaded from the camera
file:Moenchbruchallee Bruecke 0950 easyHDR.jpg, Image generated by ''easyHDR'' from the corresponding RAW file (mode "LDR enhancement", preset "standard")
Lightroom plug-in
EasyHDR is shipped with a plug-in for
Adobe Lightroom that allows exporting photos (original or pre-processed) from Lightroom to easyHDR for processing and finally storing the output results into the Lightroom catalog.
Making-of
EasyHDR was developed by Bartłomiej Okonek in 2006, then studying at
Wrocław University of Science and Technology
Wrocław University of Science and Technology ( pl, Politechnika Wrocławska, founded as german: link=no, Technische Hochschule Breslau) is a technological university in Wrocław, Poland. With buildings and infrastructures dispersed throughout t ...
, Poland, in particular for use in
astrophotography
Astrophotography, also known as astronomical imaging, is the photography or imaging of astronomical objects, celestial events, or areas of the night sky. The first photograph of an astronomical object (the Moon) was taken in 1840, but it w ...
.
The HDR generation and tone mapping algorithm is also used by
FARO Scene LT point cloud viewing software.
References
External links
*
* {{Official website, www.easyhdr.com
Partner Site Softfamous
Photo software
Raster graphics editors
HDR tone mapping software