NPnprateem·Feb 10, 2025
Click the about link:
https://ai.meta.com/sam2/
GH: https://github.com/facebookresearch/sam2
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sam2
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facebookresearch / sam2
sam2
The repository provides code for running inference with the Meta Segment Anything Model 2 (SAM 2), links for downloading the trained model checkpoints, and example notebooks that show how to use the model.
4Distinct people
4Mentions
0Explicit recommenders
20.1KGitHub stars
What to know before exploring
What it is
The repository provides code for running inference with the Meta Segment Anything Model 2 (SAM 2), links for downloading the trained model checkpoints, and example notebooks that show how to use the model.
GitHub
Where it is used
No documented product use has been verified yet.
What people are saying
No recommendation phrase was found in the indexed comments.
No classified warning is attached to this page. Read the discussions before treating silence as approval.
Also in these discussions
No other repository is repeatedly linked in the same discussions.
This week on Hacker News
Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 3:03:16 PM UTC.
No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.
Mentions over time
HN mentions by week4 dated mentions
Observed mentions: 2024-07-29 22:52:56 UTC to 2025-02-10 07:24:44 UTC. Weeks start Monday, UTC.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| Jul 29 | 2024-07-29 00:00:00 UTC | 2024-08-05 00:00:00 UTC | 3 | 1 | 2 |
| Aug 5 | 2024-08-05 00:00:00 UTC | 2024-08-12 00:00:00 UTC | 0 | 0 | 0 |
| Aug 12 | 2024-08-12 00:00:00 UTC | 2024-08-19 00:00:00 UTC | 0 | 0 | 0 |
| Aug 19 | 2024-08-19 00:00:00 UTC | 2024-08-26 00:00:00 UTC | 0 | 0 | 0 |
| Aug 26 | 2024-08-26 00:00:00 UTC | 2024-09-02 00:00:00 UTC | 0 | 0 | 0 |
| Sep 2 | 2024-09-02 00:00:00 UTC | 2024-09-09 00:00:00 UTC | 0 | 0 | 0 |
| Sep 9 | 2024-09-09 00:00:00 UTC | 2024-09-16 00:00:00 UTC | 0 | 0 | 0 |
| Sep 16 | 2024-09-16 00:00:00 UTC | 2024-09-23 00:00:00 UTC | 0 | 0 | 0 |
| Sep 23 | 2024-09-23 00:00:00 UTC | 2024-09-30 00:00:00 UTC | 0 | 0 | 0 |
| Sep 30 | 2024-09-30 00:00:00 UTC | 2024-10-07 00:00:00 UTC | 0 | 0 | 0 |
| Oct 7 | 2024-10-07 00:00:00 UTC | 2024-10-14 00:00:00 UTC | 0 | 0 | 0 |
| Oct 14 | 2024-10-14 00:00:00 UTC | 2024-10-21 00:00:00 UTC | 0 | 0 | 0 |
| Oct 21 | 2024-10-21 00:00:00 UTC | 2024-10-28 00:00:00 UTC | 0 | 0 | 0 |
| Oct 28 | 2024-10-28 00:00:00 UTC | 2024-11-04 00:00:00 UTC | 0 | 0 | 0 |
| Nov 4 | 2024-11-04 00:00:00 UTC | 2024-11-11 00:00:00 UTC | 0 | 0 | 0 |
| Nov 11 | 2024-11-11 00:00:00 UTC | 2024-11-18 00:00:00 UTC | 0 | 0 | 0 |
| Nov 18 | 2024-11-18 00:00:00 UTC | 2024-11-25 00:00:00 UTC | 0 | 0 | 0 |
| Nov 25 | 2024-11-25 00:00:00 UTC | 2024-12-02 00:00:00 UTC | 0 | 0 | 0 |
| Dec 2 | 2024-12-02 00:00:00 UTC | 2024-12-09 00:00:00 UTC | 0 | 0 | 0 |
| Dec 9 | 2024-12-09 00:00:00 UTC | 2024-12-16 00:00:00 UTC | 0 | 0 | 0 |
| Dec 16 | 2024-12-16 00:00:00 UTC | 2024-12-23 00:00:00 UTC | 0 | 0 | 0 |
| Dec 23 | 2024-12-23 00:00:00 UTC | 2024-12-30 00:00:00 UTC | 0 | 0 | 0 |
| Dec 30 | 2024-12-30 00:00:00 UTC | 2025-01-06 00:00:00 UTC | 0 | 0 | 0 |
| Jan 6 | 2025-01-06 00:00:00 UTC | 2025-01-13 00:00:00 UTC | 0 | 0 | 0 |
| Jan 13 | 2025-01-13 00:00:00 UTC | 2025-01-20 00:00:00 UTC | 0 | 0 | 0 |
| Jan 20 | 2025-01-20 00:00:00 UTC | 2025-01-27 00:00:00 UTC | 0 | 0 | 0 |
| Jan 27 | 2025-01-27 00:00:00 UTC | 2025-02-03 00:00:00 UTC | 0 | 0 | 0 |
| Feb 3 | 2025-02-03 00:00:00 UTC | 2025-02-10 00:00:00 UTC | 0 | 0 | 0 |
| Feb 10 | 2025-02-10 00:00:00 UTC | 2025-02-17 00:00:00 UTC | 1 | 0 | 1 |
What Hacker News says
4 sourcesI think that repository is what they are talking when they say "releasing a pretrained Segment Anything 2 model, [...] and code": https://github.com/facebookresearch/segment-anything-2
In Meta introduces Segment Anything Model 2Yes I did give it a glance, polite and clever HN member, it showed an object in a sequence of images extracted from video, and evidently followed the object from sequence.
Perhaps however my interpretation of what happens here is way off, which is why I asked in an obviously incorrect and stupid way that you have pointed out to me without clarifying exactly why it was incorrect and stupid.
So anyway there is the extraction of the object I referred to, but also seeming to follow the object through sequence of scenes?
https://github.com/facebookresearch/segment-anything-2/raw/m...
So it seems to me that they identify the object and follow it for a contiguous sequence. Img1, img2, img3, img4, is my interpretation incorrect here?
But what I am wondering is - what happens if the object is not in img3 - like perhaps two people talking and shift
Read the rest
ing viewpoint from person talking to person listening. Person talking is in img1, img2, img4. Can you get that sequence or is it just img1, img2 the sequence.
It says "We extend SAM to video by considering images as a video with a single frame." which I don't know what that means, does it mean that they concatenated all the video frames into a single image and identified the object in them, in which case their example still shows contiguous images without the object ever disappearing so my question still pertains.
So anyway my conclusion is what said when addressing me was wrong, to quote: "what SAM does is immediately apparent when you view the home page" because I (the you addressed) viewed the homepage I wondered about some things? Obviously wrong things that you have identified as being wrong.
And thus my question is: If what SAM does is immediately apparent when you view the home page can you point out where my understanding has failed?
On edit: grammar fixes for last paragraph / question.
SAM 2: Segment Anything in Images and Videos
824 points · Open discussion