Converting an OpenCV Image to Black and White

Question

How do you convert a grayscale OpenCV image to black and white? I see a similar question has already been asked, but I\'m using OpenCV 2.3, and the proposed solution no long

Answer 1

Here's a two line code I found online that might be helpful for a beginner

# Absolute value of the 32/64
abs_image_in32_64 = np.absolute(image_in32_64)

image_8U = np.uint8(abs_image_in32_64)