Nikhila Ravi

speaker

227 appearances 1 recordings 1 series first heard Dec 2025 last heard 18 Dec

Nikhila Ravi’s voice in public audio — every appearance, attributed to the second.

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Recordings per month over the last 12 months — 1 in all, peaking in Dec 2025 with 1.

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Latent Space: The AI Engineer Podcast · SAM 3: The Eyes for AI — Nikhila & Pengchuan (Meta Superintelligence), ft. Joseph Nelson (Roboflow) · 18 Dec 2025 podcast

So SAM3 is a model that can detect, segment, and track objects in images and videos using what we call concept prompts.

So I'm gonna start with a simple

image example and then we'll show you a video example.

So a concept can be anything that is a short text phrase.

So here for example we can use something like watering can and you can see the model predicts a mask for the watering can.

You can also then refine the prompts using clicks or additional visual exemplars, which I'll show you in a different image.

But essentially, idea of a concept prompt opens up the ability to find all instances of an object category without having to manually click on every single instance, as you would have had to do if you were using SAM2.

or Sam One.

Now if the model misses any of the instances, you can add visual exemplars.

So a visual exemplar is also a way to describe a concept to the model.

So here I can add a positive box here.

And show the model that you know this is also an instance of a flower that we want to detect.

So this is just an images.

But what's really cool is you can now also do this in video.

And so here I'll show you an example.

Um maybe this is a football match.

You want to track all the players in white, for example.

red jersey or white jersey, you can provide a concept prompt and the model find the objects in the first frame and then track and d detect the new instances that appear later on in the video.

So it's not just detecting on the first frame, but both tracking those detections and finding new instances that appear throughout the video.

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