Citations.txt

Citations:

Pygame - handling images: https://www.pygame.org/docs/
    Most used class: pygame.Surface 

RGB to HSV Coversion: https://www.rapidtables.com/convert/color/rgb-to-hsv.html

Box Blur: https://en.wikipedia.org/wiki/Box_blur

Note: Some of the filters without citations were implemented by creating
mapping functions or through trial and error. Google's Color Picker, which can 
be found here (https://g.co/kgs/q6WcLX), was sometimes used to assess which 
values needed mapping functions.

See comment on lines 61-66 of the filters.py function for further explanation
on how the filters work.  

In the filters.py file, someone helped to outline the implementation of 
the Filter class, the SaturateFilter class, and the DesaturateFilter class.

Read the cmu_graphic.py file and used callUserFn function to add a call to the 
drawImage function to the customredrawAll function. customRedrawAll in 
image_display_fix.py is a modified version of the redrawAll function in
cmu_graphics.py 

Read the RGB class in the shape_logic.py file to create the convertCMUToPG method.

Flood Fill: https://www.geeksforgeeks.org/flood-fill-algorithm/

See comment on lines 313-319 of the toolbars.py function for further explanation
on how the lasso tool was used to make the layer.  

Enumerate method: https://docs.python.org/3/library/functions.html#enumerate

Finding neigherbors: https://en.wikipedia.org/wiki/Moore_neighborhood

Images Citations:

Birds: https://www.scientificamerican.com/article/silent-skies-billions-of-north-american-birds-have-vanished

Eiffel Tower: https://engineering.purdue.edu/MSE/aboutus/gotmaterials/Buildings/patel.html

Food 1: https://www.pexels.com/photo/flat-lay-photography-of-vegetable-salad-on-plate-1640777

Food 2: https://www.bonappetit.com/recipe/vegan-pasta-alla-vodka

Food 3: https://viva.org.uk/health/berries

Italy: https://www.britannica.com/place/Italy/Land

Peppers: https://www.jessicagavin.com/types-of-peppers

Ship: https://www.businessinsider.com/cruise-ship-workers-reveal-what-life-is-like-sea-2019-4

Transparent Rubber Duck: https://www.bubsngrubs.com.au/safety-1st-rubber-ducky-temp-guard.html

Yosemite: https://www.nps.gov/yose/planyourvisit/yv.htm