RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-27 09:17:35 +00:00
Code Issues Activity Actions

PixelPaint: Add Median filter

Browse source 
The median filter replaces a pixel with the median of all pixels
(usually grey value is used) in a square neighborhood. This is a
standard image processing filter used for denoising, as despite its
simplicity it can e.g. retain edges quite well.

The first implementation is quite inefficient mostly to environmental
constraints. Due to how images are passed to the processing function,
two unnecessary copies happen. And because there's no fast sorting
algorithm for small arrays (insertion sort) yet, quick sort needs to be
used which is quite slow on this scale.
This commit is contained in:
kleines Filmröllchen 2022-08-12 22:59:03 +02:00 • committed by Linus Groh
parent 1712b6b3ed
commit ec52d16f7a
5 changed files with 113 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

3
Userland/Applications/PixelPaint/CMakeLists.txt
View file

@ -10,6 +10,7 @@ compile_gml(EditGuideDialog.gml EditGuideDialogGML.h edit_guide_dialog_gml)
compile_gml(FilterGallery.gml FilterGalleryGML.h filter_gallery_gml)
compile_gml(ResizeImageDialog.gml ResizeImageDialogGML.h resize_image_dialog_gml)
compile_gml(LevelsDialog.gml LevelsDialogGML.h levels_dialog_gml)
compile_gml(Filters/MedianSettings.gml Filters/MedianSettingsGML.h median_settings_gml)
set(SOURCES
CreateNewImageDialog.cpp
@ -31,6 +32,8 @@ set(SOURCES
Filters/Invert.cpp
Filters/LaplaceCardinal.cpp
Filters/LaplaceDiagonal.cpp
Filters/Median.cpp
Filters/MedianSettingsGML.h
Filters/Sepia.cpp
Filters/Sharpen.cpp
HistogramWidget.cpp