#graphics #sort #jpeg #pixel #image

arko

A small library for pixel manipulation in images

6 releases

0.2.3 Aug 25, 2022
0.2.2 Aug 25, 2022
0.2.1 Apr 17, 2022
0.1.1 Jan 27, 2022

#85 in Images

23 downloads per month

Custom license

48KB
1K SLoC

Arko

Arko is a small library providing three pixel manipulation algorithms :

  • Brush : Create some kind of brush effect
  • Slim : Copy a pixel over a ramdom numbers of pixel on the same line or column
  • Sort : A classic pixel sorting

The library also contains a minimal image convertion tool (supporting png and jpg).

How to use it

All of the algorithms can be used in four directions :

  • bottom to top
  • left to right
  • right to left
  • top to bottom

For algorithms using colors here are the complete list of available colors : "white", "black", "grey", "red", "yellow", "green", "cyan", "blue", "magenta".

Brush

Params :

  • in_img(str) : path to the input image
  • out_img(ste) : path to the output image
  • force_ouput_overwrite(bool) : flag to allow overwriting of the output image if present
  • proba(i32) : the probability for the algorithm to have effect on a pixel
  • min(i32) : the minimum of pixel affected when the algorithm starts
  • max(i32) : the maximum of pixel affected when the algorithm starts

Examples :

arko::brush_bottom_to_top("input.png", "btt.png",true, 100, 4, 20);
arko::brush_left_to_right("input.png", "ltr.png",true, 100, 4, 20);
arko::brush_right_to_left("input.png", "rtl.png",true, 100, 4, 20);
arko::brush_top_to_bottom("input.png", "ttb.png",true, 100, 4, 20);

Slim

Probability global

When using these functions the probability is the same applyed to all colors.

Params :

  • in_img(str) : path to the input image
  • out_img(ste) : path to the output image
  • force_ouput_overwrite(bool) : flag to allow overwriting of the output image if present
  • proba(i32) : the probability for the algorithm to effect the next pixel when activated
  • colors(Vec) : the list of colors affect by the algorithm

Examples :

let colors = vec![Colors::Red, Colors::Yellow, Colors::Green];
arko::slim_bottom_to_top_global("input.png", "btt.png",true, 40, colors);
arko::slim_left_to_right_global("input.png", "ltr.png",true, 40, colors);
arko::slim_right_to_left_global("input.png", "rtl.png",true, 40, colors);
arko::slim_top_to_bottom_global("input.png", "ttb.png",true, 40, colors);

Probability per colors

When using these functions the probability is provided per color.

Params :

  • in_img(str) : path to the input image
  • out_img(ste) : path to the output image
  • force_ouput_overwrite(bool) : flag to allow overwriting of the output image if present
  • colors_proba(Vec<(Colors, i32)>) : affected colors with their probability

Examples :

arko::slim_bottom_to_top_per_color("input.png", "btt.png",true, vec![(Colors::Red, 20), (Colors::Yellow, 34), (Colors::Green, 56), (Colors::Cyan, 45), (Colors::Blue, 64), (Colors::Magenta, 23)]);
arko::slim_left_to_right_per_color("input.png", "ltr.png",true, vec![(Colors::Red, 20), (Colors::Yellow, 34), (Colors::Green, 56)]);
arko::slim_right_to_left_per_color("input.png", "rtl.png",true, vec![(Colors::Green, 56), (Colors::Cyan, 45), (Colors::Blue, 64)]);
arko::slim_top_to_bottom_per_color("input.png", "ttb.png",true, vec![(Colors::Cyan, 45), (Colors::Blue, 64), (Colors::Magenta, 23)]);

Sort

Brut

These functions will affect the entire image and sort pixels either horizontally either vertically.

Params :

  • in_img(str) : path to the input image
  • out_img(ste) : path to the output image
  • force_ouput_overwrite(bool) : flag to allow overwriting of the output image if present

Examples :

arko::sort_brut_bottom_to_top("input.png", "btt.png", true);
arko::sort_brut_left_to_right("input.png", "ltr.png", true);
arko::sort_brut_right_to_left("input.png", "rtl.png", true);
arko::sort_brut_top_to_bottom("input.png", "ttb.png", true);

Smart

Params :

  • in_img(str) : path to the input image
  • out_img(ste) : path to the output image
  • force_ouput_overwrite(bool) : flag to allow overwriting of the output image if present
  • detection_type(i32) :
    • 0 : detection by lightness
    • 1 : detection by color group
  • detection_min(i32) : the minimum of pixel affected when the algorithm starts (first range)
  • detection_max(i32) : the maximum of pixel affected when the algorithm starts (first range)
  • multiple_range(bool) : either use one or two ranges
  • detection_min_2(i32) : the minimum of pixel affected when the algorithm starts (second range)
  • detection_max_2(i32) : the maximum of pixel affected when the algorithm starts (second range)
  • sorting_by(i32) :
    • 0 : sorting by hue
    • 1 : sorting by saturation

Examples :

arko::sort_bottom_to_top("input.png", "btt.png", true, 0, 50, 360, false, 0, 0, 1);
arko::sort_left_to_right("input.png", "ltr.png", true, 0, 50, 360, false, 0, 0, 0);
arko::sort_right_to_left("input.png", "rtl.png", true, 0, 50, 60, true, 70, 80, 1);
arko::sort_top_to_bottom("input.png", "ttb.png", true, 0, 50, 60, true, 90, 100, 0);

Converter

Params :

  • in_img(str) : path to the input image
  • out_img(ste) : path to the output image
  • force_ouput_overwrite(bool) : flag to allow overwriting of the output image if present

Examples :

arko::convert("input.png", "output.jpg", true);

Dependencies

~14MB
~179K SLoC