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Who knew A.I. colorized photos were accurate?

last month

I thought this was interesting. I recently had a lot of old black & white photos colorized with Grok Ai. One of them, a beach scene, was originally in color, but the years had taken a toll. The color was fading, and the resolution was poor. I wanted to see if Ai would fix these things, but it accepts only black & white photos. So I converted the photo to B&W and submitted it. Success! But when I saw the new version I was amazed to find all the colors of the original were replicated. All the people had their bathing suits restored to them! I looked into it, and learned the explanation is in the greyscale:

"Luminance Mapping (Grayscale to Color): The Ai does not just guess colors based on textures. It looks at the specific shade of grey in an object. Because different colors have different luminosity values, the AI's training allows it to map a specific gray tone back to the most probable original color."

This resonated with me because when I was a kid I'd look at my dad's B&W photos and try to guess the colors of the women's dresses, etc.

Here's an example: my mom with her mother-in-law. I'd been thinking Grok made a nice choice of the blue dress for my grandmother. But as it turns out, she probably made that choice herself.

I think we can interpret this to mean ALL the colorized images are fairly accurate. I hope so, anyway. This gives new meaning to “bringing the past to life.”




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