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Added Burkes dithering algorithm. (#1916)

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* Added Burkes dithering algorithm

* Added unit tests for burkes algorithm

* Fix burkes algorithm

* Added some additional information

* Fixed CI tests

* Update digital_image_processing/dithering/burkes.py

Co-Authored-By: Christian Clauss <cclauss@me.com>

* Update digital_image_processing/dithering/burkes.py

Co-Authored-By: Christian Clauss <cclauss@me.com>

* Update digital_image_processing/dithering/burkes.py

Co-Authored-By: Christian Clauss <cclauss@me.com>

* Propogate the += and add a doctest

* Fix doctest

* @staticmethod --> @ classmethod to ease testing

* def test_burkes(file_path):

* Fix for mypy checks

* Fix variable order in get_greyscale

* Fix get_greyscale method

* Fix get_greyscale method

* 3.753

Co-authored-by: Christian Clauss <cclauss@me.com>
This commit is contained in:
mateuszz0000
2020-04-30 11:54:20 +02:00
committed by GitHub
parent fbc038d532
commit 3d0680eddf
3 changed files with 95 additions and 0 deletions
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8
digital_image_processing/test_digital_image_processing.py
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@ -10,6 +10,7 @@ import digital_image_processing.filters.convolve as conv
import digital_image_processing.change_contrast as cc
import digital_image_processing.convert_to_negative as cn
import digital_image_processing.sepia as sp
import digital_image_processing.dithering.burkes as bs
from cv2 import imread, cvtColor, COLOR_BGR2GRAY
from numpy import array, uint8
from PIL import Image
@ -17,6 +18,7 @@ from PIL import Image
img = imread(r"digital_image_processing/image_data/lena_small.jpg")
gray = cvtColor(img, COLOR_BGR2GRAY)
# Test: convert_to_negative()
def test_convert_to_negative():
negative_img = cn.convert_to_negative(img)
@ -74,3 +76,9 @@ def test_sobel_filter():
def test_sepia():
sepia = sp.make_sepia(img, 20)
assert sepia.all()
def test_burkes(file_path: str="digital_image_processing/image_data/lena_small.jpg"):
burkes = bs.Burkes(imread(file_path, 1), 120)
burkes.process()
assert burkes.output_img.any()