如何利用 Python 建立點陣圖 (廣東話)

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Published on October 14, 2021 2:02:03 AM ● Video Link: https://www.youtube.com/watch?v=eHNpl6BUbBI

Duration: 4:17

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Requirements:
Install Python, PyCharm
In PyCharm, install the modules opencv-python and numpy

Source codes:
# create a bitmap image with Python

import cv2
import numpy as np

# image height 300, width 400
img = np.zeros((300, 400, 3), np.uint8) # unsigned integer 8 bit (0-255)

print(img)

for row in img:
for pixel in row:
pixel[0] = 32 # blue
pixel[1] = 32 # green
pixel[2] = 32 # red

cv2.imshow("Image", img)
cv2.waitKey(0)