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digital_image_processing/convert_to_negative (#1216)

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* digital_image_processing/convert_to_negative

* added doc

* added test code

* Update convert_to_negative.py
This commit is contained in:
Shoaib Asgar
2019-12-09 07:59:01 +05:30
committed by Christian Clauss
parent 02b717e364
commit 9316618611
2 changed files with 38 additions and 0 deletions
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digital_image_processing/test_digital_image_processing.py
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@ -8,6 +8,7 @@ import digital_image_processing.filters.median_filter as med
import digital_image_processing.filters.sobel_filter as sob
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
from cv2 import imread, cvtColor, COLOR_BGR2GRAY
from numpy import array, uint8
from PIL import Image
@ -15,6 +16,13 @@ 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)
# assert negative_img array for at least one True
assert negative_img.any()
# Test: change_contrast()
def test_change_contrast():
with Image.open("digital_image_processing/image_data/lena_small.jpg") as img: