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Chris Offner

@chrisoffner3d • 3,973 subscribers

3D computer vision, spatial AI, and synthetic data @Google XR. visual computing, machine learning, robot perception

Shorts

"Sora is a data-driven physics engine."

"Sora is a data-driven physics engine."

1,742,967 次观看

Doesn't look like the super low-res depth maps from the iPhone Pro's LiDAR sensor would be too useful as supervision (or sanity check) for recent monocular depth estimators.

Doesn't look like the super low-res depth maps from the iPhone Pro's LiDAR sensor would be too useful as supervision (or sanity check) for recent monocular depth estimators.

66,034 次观看

Here's a comparison of Depth Pro [arXiv:2410.02073], Marigold-E2E [arXiv:2409.11355], and Metric3D v2 [arXiv:2404.15506]. Looks like Marigold is attempting to look through the glass while the two metric models aren't. Dmytro Mishkin 🇺🇦

Here's a comparison of Depth Pro [arXiv:2410.02073], Marigold-E2E [arXiv:2409.11355], and Metric3D v2 [arXiv:2404.15506]. Looks like Marigold is attempting to look through the glass while the two metric models aren't. Dmytro Mishkin 🇺🇦

56,386 次观看

Is there an existing iPhone Pro app that simultaneously records the LiDAR stream and a standard RGB video? Apps like Record3D App seem to only store RGB for the points in the LiDAR point cloud but without recording a standard RGB video.

Is there an existing iPhone Pro app that simultaneously records the LiDAR stream and a standard RGB video? Apps like Record3D App seem to only store RGB for the points in the LiDAR point cloud but without recording a standard RGB video.

20,411 次观看

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Most non-technical people around me are extremely wary of robots, having been conditioned by decades of dystopian sci-fi to see them as threats to people and their humanity. Showing them THE LINE's "Dear Alice" animation often helps them see a more hopeful vision.

Most non-technical people around me are extremely wary of robots, having been conditioned by decades of dystopian sci-fi to see them as threats to people and their humanity. Showing them THE LINE's "Dear Alice" animation often helps them see a more hopeful vision.

4,468,017 次观看 • 1 年前

"Sora is a data-driven physics engine."

"Sora is a data-driven physics engine."

1,742,967 次观看 • 1 年前

Christian Rupprecht explains their interpretability research in 3D computer vision, testing if (and where in the model) multi-view transformers like VGGT, DepthAnything 3, and DUSt3R use point/patch correspondences to make sense of 3D scene geometry.

Christian Rupprecht explains their interpretability research in 3D computer vision, testing if (and where in the model) multi-view transformers like VGGT, DepthAnything 3, and DUSt3R use point/patch correspondences to make sense of 3D scene geometry.

73,983 次观看 • 2 个月前

"Society should get to a place where we feel like an equitable solution has been found and a bunch of AI companies taking all the money is not really a very acceptable version of that, but that's what's happening right now." – Casey Muratori

"Society should get to a place where we feel like an equitable solution has been found and a bunch of AI companies taking all the money is not really a very acceptable version of that, but that's what's happening right now." – Casey Muratori

49,027 次观看 • 5 个月前

I just tried out playing Counter-Strike in a neural network on my MacBook. In my first run, it diverged into mush pretty quickly. The recording is sped up 5x.

I just tried out playing Counter-Strike in a neural network on my MacBook. In my first run, it diverged into mush pretty quickly. The recording is sped up 5x.

135,857 次观看 • 1 年前

"As roboticists and computer vision people [outside of big tech], do we just wait for the next foundation model?" I share the frustration. It's disempowering when most major progress recently is downstream of "foundation models" that you don't have the compute or data to train.

"As roboticists and computer vision people [outside of big tech], do we just wait for the next foundation model?" I share the frustration. It's disempowering when most major progress recently is downstream of "foundation models" that you don't have the compute or data to train.

68,702 次观看 • 9 个月前

Good luck 3D-reconstructing this one.

Good luck 3D-reconstructing this one.

77,011 次观看 • 1 年前

The iPhone LiDAR depth is pretty stable but low-res and low detail. Monodepth is highly detailed but unstable ("depth flickering"). For more stable and detailed metric depth, I solve for the per-frame affine transform that optimally "anchors" the monodepth to the LiDAR.

The iPhone LiDAR depth is pretty stable but low-res and low detail. Monodepth is highly detailed but unstable ("depth flickering"). For more stable and detailed metric depth, I solve for the per-frame affine transform that optimally "anchors" the monodepth to the LiDAR.

43,116 次观看 • 1 年前

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