Crop the image to get rid of e.g. a table the sheet was lying on.

It should be possible to e.g. convert an Image of a blackboard to a white background black foreground image

TODOS:

• Carefully think about what kind of requirements we need
• Implement it in the main.py file

Some sample requirements are:

• Converting multiple images
• Converting folders with images
• Converting images with background colors
• Converting images for blackboard
• ...

EDIT:
Bestes Pattern:
https://en.wikipedia.org/wiki/Command_pattern

Commands:

- whitebrush [options...] <files...>
Default command. Converts the given files and folders (with 1 deepness) and generates files appends _brushed before the extension.
- whitebrush --recursive (-r)
Converts the given files and folders (with endless deepness).
- whitebrush --convert (-c)
Replaces all files instead of adding the default _brushed name.
-whitebrush --mask (-m) <{name}mybrushedimage{extension}>
Changes the default added _brushed to the given text which isn't the placeholder {name} and extension.
-whitebrush --background(-b) < HTML ColorCode>
Converts the background to the given color code.
-whitebrush --forground(-f) < HTML ColorCode>
Converts the forground to the given color code.
-whitebrush --template (-t) <blackboard/whiteboard/note>
Converts the forground and background to the color code templates.
whitebrush --help (-h)
Displays the help page.

Requirements:

• All options should be specifiable in one command
• When using background or forground changes the last specified parameter should be used

Calculate representative colors from set of foreground pixels. Convert each pixel to its representative color.

Create a method to extract the background in an Image and to calculate one clear background color.
Make sure this works for:

• white background
• blackboards
• Post-Its in different colors
• notebooks
• Different light conditions
  • everything in light / shadows
  • mixed conditions

Create a setup.py script in order to allow system wide installation of the module

python setup.py build && python setup.py install should install the module

Also include an entry_point for white_brush, so that you can just run white_brush ... on the command line instead of python -m white_brush

the install requires dependencies should be read from the Pipfile if possible

Via the CLI the user should be able to specify colors either by hex code or by name
What we need is a method parse_color, which works like this:

>>> parse_color("#ff0000")
(255, 0, 0)
>>> parse_color("Red") # should be case insensitive
(255, 0, 0)

The webcolor project already contains functionality to convert color names to rgb values and also to parse hex color codes, so the easiest approach would probably be to integrate that.

parse_color should probably be best placed in a new utils.py module in white_brush.colors

Replace the "No description, website, or topics provided." with the actual project description.

"Erstellen sie einen Projektabschlussbericht der auf ca. 8-10
Seiten mindestens folgendes enthält:
‣Team und Thema (Titelblatt ist nicht notwendig)
‣Projektbeschreibung
‣Überblick über ihre Entwicklung (Diagramme, Screenshots, etc)
‣Beschreibung der realisierten Funktionen gerne in technischen Details
‣Mind. drei Quellen / Links die ihre Kollegen als Startpunkte für ähnliche
Projekte verwenden können"

Convert the foreground colours to more vibrant, clearer colours.
The has two main benefits: less different colours in the result and better readability from the user.

Create an entry for the context menu on (Image) Files in Windows Explorer. It should work similar to PeaZip, 7Zip, see the attached image:

Add travis build file and automatically execute the python tests on the build server.

Extract all foreground colors.
Foreground are the actual handwritten notes.
Related to #4 (Everything that is not a background is foreground)

Sometimes the test test_choose_representative_colors_different_values (in tests/test_calc_colors.py) passes, sometimes it fails.

If you add another test method running that test often:

def test_choose_representative_colors_different_values_often(self):
    for i in range(100):
        self.test_choose_representative_colors_different_values()

it will never pass

@p-hofer please take a look