Bilateral filter implementation in GLSL

Core implementation is written in fragment shader.

See fshader.frag for implementation detail.

Usage

• Install Qt Creator (free)
• Open BilatteralFiltering.pro
• Hit run

Note:

• This project is created using Qt 5.9.1
• This project's default setting requires OpenGL core profile version 4.50. Version setting can be changed to any version from 3.30. See Note on GLSL version for detail
• Tested in Ubuntu
• Execute BilatteralFiltering.exe directly in Window to run program without compiling (non tested)

Note on GLSL version

• This project uses GLSL version 4.50 by default.
• Current GLSL implementation requires OpenGL version from 3.30
• To configure GLSL version. For example, change from version 4.40 to 3.10. Update version setting in following files:
  • main.cpp: replace surfaceFormat.setMajorVersion(4); by surfaceFormat.setMajorVersion(3);
  • main.cpp: replace surfaceFormat.setMinorVersion(5); by surfaceFormat.setMinorVersion(1);
  • bilateralfilterwidget.h: replace #include <QOpenGLFunctions_4_5_Core> by #include <QOpenGLFunctions_3_1_Core>
  • vshader.vert: replace #version 450 by #version 310
  • fshader.frag: replace #version 450 by #version 310

Screenshots: