How to Save a Numpy Array as an Image Without PIL?

Saving a Numpy Array as an Image Without PIL

Storing Numpy arrays as images is a common requirement in various image processing applications. While PIL (Python Imaging Library) is a popular option for this task, it may not always be available or desired. Here, we'll explore alternative methods to save Numpy arrays as images without using PIL:

Method 1: OpenCV

1. Install OpenCV:

pip install opencv-python

2. Convert Numpy Array to Image:

import cv2

array = ...  # Your Numpy array
image = cv2.cvtColor(array, cv2.COLOR_BGR2RGB)

3. Save Image:

cv2.imwrite("output.jpg", image)

Method 2: Matplotlib

1. Install Matplotlib:

pip install matplotlib

2. Convert Numpy Array to Image:

import matplotlib.pyplot as plt

array = ...  # Your Numpy array
plt.imshow(array)

3. Save Image:

plt.savefig("output.png")

Method 3: Numpy's Imageio

1. Install Imageio:

pip install imageio

2. Save Image:

import imageio

array = ...  # Your Numpy array
imageio.imwrite("output.jpg", array)

These methods provide efficient ways to save Numpy arrays as images without the need for PIL. Select the most suitable approach based on the requirements and available resources in your environment.

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