this post was submitted on 21 May 2025
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169
Color-correcting algorithm removes the effect of water in underwater scenes (techxplore.com)
submitted 2 days ago by [email protected] to c/[email protected]
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A team from MIT and the Woods Hole Oceanographic Institution (WHOI) has developed an image-analysis tool that cuts through the ocean's optical effects and generates images of underwater environments that look as if the water had been drained away, revealing an ocean scene's true colors. The team paired the color-correcting tool with a computational model that converts images of a scene into a three-dimensional underwater "world," that can then be explored virtually.

The researchers have dubbed the new tool SeaSplat, in reference to both its underwater application and a method known as 3D Gaussian splatting (3DGS), which takes images of a scene and stitches them together to generate a complete, three-dimensional representation that can be viewed in detail, from any perspective.

For now, the method requires hefty computing resources in the form of a desktop computer that would be too bulky to carry aboard an underwater robot. Still, SeaSplat could work for tethered operations, where a vehicle, tied to a ship, can explore and take images that can be sent up to a ship's computer.

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[–] [email protected] 7 points 2 days ago (2 children)

Can't wait to try this on my dive photos without red filters

[–] [email protected] 1 points 2 days ago (1 children)

I get the impression this is a video-only thing because you need multiple vantage points of the scene. You can still extract a single frame in the end of course (like the article itself does), but you'll need to shift around meaningful distances, like attack submarines do with Target Motion Analysis.

[–] [email protected] 3 points 1 day ago

Yep, since this is using Gaussian Splatting you'll need multiple camera views and an initial point cloud. You get both for free from video via COLMAP.