How can I save a NumPy array as an image without using PIL?

Saving a Numpy Array as an Image

Saving a matrix in the form of a NumPy array as an image can be achieved using various methods. While the provided solution utilizes PIL (Python Imaging Library), there are alternative approaches that bypass the PIL dependency.

One such approach involves using OpenCV (Open Source Computer Vision Library):

import cv2

# Load the NumPy array
array = cv2.imread('path/to/input.npy')

# Save the array as an image
cv2.imwrite('path/to/output.png', array)

This method offers flexibility in choosing the image format (e.g., PNG, JPEG, BMP) and provides efficient image processing capabilities.

Another option is scikit-image, a powerful image processing library:

from skimage import io

# Load the NumPy array
array = io.imread('path/to/input.npy')

# Save the array as an image
io.imsave('path/to/output.png', array)

Scikit-image handles image I/O with plugins, enabling support for various file formats.

It's essential to note that the specific image format supported will depend on the chosen library and its dependencies. Consulting the documentation for these libraries is recommended to determine their respective image format capabilities.

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