How to Read and Set Pixel RGB Values in Python?

Reading and Setting Pixel RGB Values in Python

Question:

How can you determine the RGB values of a specific pixel in an image using Python's built-in libraries? Conversely, how can you modify the RGB values of a pixel in a blank image?

Answer:

While the Python Image Library (PIL) offers a comprehensive solution for this task, it requires additional installation. To avoid such dependency, you can utilize the built-in Image module.

Reading Pixel Values:

<code class="python">from PIL import Image

im = Image.open('image.jpg')
pix = im.load()
print(pix[x, y])  # Get the RGB tuple for pixel at coordinates (x, y)</code>

Setting Pixel Values:

<code class="python">pix[x, y] = (red, green, blue, alpha)  # Set the RGB and alpha values for pixel (x, y)
im.save('modified_image.png')  # Save the edited pixels</code>

This provides a basic method for modifying individual pixels within an image without external dependencies.

The above is the detailed content of How to Read and Set Pixel RGB Values in Python?. For more information, please follow other related articles on the PHP Chinese website!