This example demonstrates gamma correction — a nonlinear operation used to encode and decode the luminance of each image pixel. See https://en.wikipedia.org/wiki/Gamma_correction for more information.

The example creates a fractal image in memory and performs gamma correction on it. The output of the example application is a BMP image with corrected luminance.

This example uses C++11 lambda expressions. Specifying a compiler option such as -std=c++11 or similar might be necessary in order to build the example. For more information, please refer to the documentation for the compiler you use.

System Requirements

For the most up-to-date system requirements, see the release notes.

Files
gamma_correction.cpp
Implementation of the gamma correction algorithm based on Parallel STL.
utils.cpp
Utility code (class image) to write an image to disk as a BMP file.
utils.h
Declaration of the image class.
Makefile
Makefile for building the example.
Directories
msvs
Contains a Microsoft* Visual Studio* IDE workspace for building and running the example (Windows* OS systems only).
xcode
Contains a Xcode* IDE workspace for building and running the example (macOS* systems only).
Build instructions

Read Getting Started with Parallel STL for general instructions on setting up and using Parallel STL.

Use the Makefile to build the example on the command line.

Use the msvs/gamma_correction.sln project file to build the example in the Microsoft* Visual Studio* IDE (Windows* systems only).

Usage
gamma_correction or gamma_correction.exe
Outputs the original fractal image image_1.bmp and the fractal image with corrected luminance image_1_gamma.bmp

Legal Information

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