imgsort

This is a pretty useless tool that sorts pixels in your images.

Syntax:

./imgsort input-image output-image

where ./imgsort is the executable, and input-image is an existing image file with extension, and output-image is the output image file with extension.

Dependencies

• OpenCV (sudo apt install libopencv-dev for Ubuntu. sudo pacman -S opencv for Arch Linux.)
• Your hands (probably)

Building (on Linux)

I made this thing in Eclipse, but if you want to compile it from the command line you can do this from within the project folder:
On Ubuntu systems, you can compile using the following command:

g++ -o "imgsort" ./src/imgsort.cpp -I/usr/include -lopencv_core -lopencv_highgui -lopencv_imgcodecs -O3

On Arch Linux systems, you can compile using the following command:

g++ -o "imgsort" ./src/imgsort.cpp -I/usr/include/opencv4 -lopencv_core -lopencv_highgui -lopencv_imgcodecs -O3

Other interesting stuff that might be interesting to know about

The commented code is for if you want to sort by VSH instead of RGB. (edit the for loop if you want to sort by HSV)

If you uncomment the code don't forget to compile with extra library: opencv_imgproc
Then you'd have to compile like this (if you're on command line on Linux):
Ubuntu:

g++ -o "imgsort" ./src/imgsort.cpp -I/usr/include -lopencv_core -lopencv_highgui -lopencv_imgcodecs -lopencv_imgproc -O3

Arch Linux:

g++ -o "imgsort" ./src/imgsort.cpp -I/usr/include/opencv4 -lopencv_core -lopencv_highgui -lopencv_imgcodecs -lopencv_imgproc -O3

Python remake

I was able to achieve a similar thing in Python. The results are slightly different to what you will get from C++ imgsort, though. Just install numpy and Pillow via pip. Put the following code in a Python file.

from PIL import Image
import numpy as np
import sys

input = np.array(Image.open(sys.argv[1]))
modified_input = np.sort(input, axis=1)
output = Image.fromarray(modified_input)
output.save(sys.argv[2])

arguments are the same as in the C++ imgsort.

Just run the python file via a terminal or command prompt using similar arguments as you would with the C++ imgsort.

Example: python3 pyimgsort.py input.png output.png for Linux, py pyimgsort.py input.png output.png for Windows