mirror of
https://github.com/TheAlgorithms/Python.git
synced 2024-11-23 21:11:08 +00:00
bc8df6de31
* [pre-commit.ci] pre-commit autoupdate updates: - [github.com/astral-sh/ruff-pre-commit: v0.2.2 → v0.3.2](https://github.com/astral-sh/ruff-pre-commit/compare/v0.2.2...v0.3.2) - [github.com/pre-commit/mirrors-mypy: v1.8.0 → v1.9.0](https://github.com/pre-commit/mirrors-mypy/compare/v1.8.0...v1.9.0) * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci --------- Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
31 lines
734 B
Python
31 lines
734 B
Python
"""
|
|
Implemented an algorithm using opencv to convert a colored image into its negative
|
|
"""
|
|
|
|
from cv2 import destroyAllWindows, imread, imshow, waitKey
|
|
|
|
|
|
def convert_to_negative(img):
|
|
# getting number of pixels in the image
|
|
pixel_h, pixel_v = img.shape[0], img.shape[1]
|
|
|
|
# converting each pixel's color to its negative
|
|
for i in range(pixel_h):
|
|
for j in range(pixel_v):
|
|
img[i][j] = [255, 255, 255] - img[i][j]
|
|
|
|
return img
|
|
|
|
|
|
if __name__ == "__main__":
|
|
# read original image
|
|
img = imread("image_data/lena.jpg", 1)
|
|
|
|
# convert to its negative
|
|
neg = convert_to_negative(img)
|
|
|
|
# show result image
|
|
imshow("negative of original image", img)
|
|
waitKey(0)
|
|
destroyAllWindows()
|