pborsutzki / hdrv

HDR Viewer

HDR Viewer

GUI which displays HDR images, no bullshit.

Features

• Opens popular HDR image formats: Radiance PIC (*.pic, *.hdr), PFM (*.pfm, *.ppm), OpenEXR (*.exr)
• Exports images in Radiance PIC or PFM format
• Fast zoom, pan and brightness control
• Manage multiple image documents in tabs
• Compare opened images (absolute difference or side-by-side)

Build

The only prerequisite is that Qt 5.5 or newer is installed on the system.

Checkout

git clone https://github.com/Acly/hdrv.git hdrv
cd hdrv
git submodule update --init
mkdir build
cd build   

Updating submodules will download the required boost modules. You can skip this step and use an existing boost installation by passing "BOOST_ROOT=/path/to/boost/include" to qmake in the next step.

Windows - VC14

qmake -tp vc -r ../hdrv.pro

This generates a Visual Studio solution which can be used to build the application. After building, runtime libraries can be copied with windeployqt --qmldir ../viewer/view viewer/release/hdrv.exe.

Tested using Visual Studio 2015 Update 2 x64.

Linux

Building requires a C++14 compiler and OpenEXR 2.2.0 to be installed. Most distributions have precompiled packages available. To build run:

qmake .. && make

Tested using GCC 5.

Use

Load images by supplying them as arguments to the hdrv executable, drag-and-drop them into the viewer or use the Open image button in the tab bar.

Mouse controls

• [ Pan ] Hold the left mouse button to view different regions of the image if it does not fit on the screen.
• [ Zoom ] Use the mouse wheel to scale the image.
• [ Compare ] Hold the right mouse button in comparison mode to move the image comparison separator.

Keybaord shortcuts

• [ +/- ] Increase / decrease the image brightness.
• [ Left/Right ] Iterate through images in the current folder.
• [ 1/2/3/... ] Switch to image tab 1, 2, 3, ...
• [ S ] Toggle between the last two image tabs.
• [ C ] Open comparison mode for the last two images.
• [ R ] Reset positioning and scaling of the image.

TODO

• Show more stats (average / maximum / minimum color)
• High quality tone mapping
• Better support for existing formats (encodings, layouts)