Colorize and Breathe Life into Old Black-and-White Photos (Get started for free)

How can I batch convert images in a folder from color to black and white and then back to color

mogrify path/to/folder -colorspace gray jpg

This will create a new directory called grayscale with grayscale versions of all the JPEGs in the original directory. To convert the images back to color, you can use the same command with the -colorspace option set to sRGB instead of gray:

mogrify path/to/folder -colorspace sRGB jpg

Alternatively, you can use Python and OpenCV to batch convert images. First, install OpenCV and import the necessary modules:

import cv2

import numpy as np

Then, use the following code to read and write image files:

for file in files:

img = cv2.imread(file)

cv2.imwrite(grayscale/ + file, cv2.cvtColor(img, cv2.COLOR_BGR2GRAY))

This code reads each image file in the current directory, converts it to grayscale using the cvtColor function, and writes the grayscale version to a new file in a grayscale directory. To convert the images back to color, you can modify the code to use the cvtColor function with the COLOR_GRAY2BGR flag instead:

for file in files:

img = cv2.imread(file)

cv2.imwrite(color/ + file, cv2.cvtColor(img, cv2.COLOR_GRAY2BGR))

Note that these commands assume that the images are stored in the current directory and that you want to create a new directory called grayscale or color to hold the converted images. You'll need to modify the code or commands accordingly if your images are stored in a different location or if you want to use different output directories.

Colorize and Breathe Life into Old Black-and-White Photos (Get started for free)