Yujia Chen retweeted
1/8 BudgetPix: one model, any compute budget.
Our pixel-space image generator adapts computation to image content at inference time. Same prompt, same noise, from 100% down to just 10% of the tokens.
→ Project Webpage: karaozgur.com/BudgetPix
Yujia Chen retweeted
One pattern I find useful for working with LLMs is a nice long ramble session. Sometimes the LLM needs more bits to understand what you're trying to achieve, but you're too lazy to type them. In these cases I like to lean back, switch to /voice and just ramble for like 10 minutes, total mess, anything goes, full stream of consciousness. Sometimes I declare it up top, something like "switching to speech recognition sorry for any typos...". Sometimes I turn it into a small interview of a few turns. But I find that the LLMs are somehow very good at reconstructing long incoherent rambles and often their echo of your own tangle of thoughts comes out quite a bit cleaner than what you started with. The result is that you improve the mind meld and have to correct things less from that point on.
Yujia Chen retweeted
We suspected last week's cyberattack might have come from a frontier lab, given the sophistication of the agent. Turns out it did!
We've spent the past 24 hours working closely with the @OpenAI team (thanks!), and we strongly believe there was no malicious intent on their part. It's quite mind-blowing that all of this happened autonomously!
The investigation is ongoing, and we'll share more learnings from what might be the first incident of its kind!
we had a significant security incident during evaluation of our models. we are sharing what we have learned so far. thanks to @huggingface for the partnership on this.
openai.com/index/hugging-fac…
Insert a video into a video with motion and identity awareness. Proud of this work! Split-then-Merge is a cool step forward for video composition. Great teamwork Ozgur!
🎥 Introducing Split-then-Merge: A new video composition framework!
This approach enables the composition of any foreground video with any background video.
Unlike conventional methods that rely on annotated datasets or handcrafted rules, Split-then-Merge (StM) splits a large unlabeled corpus of videos into dynamic foreground and background layers, then merges them to learn how dynamic subjects interact with diverse scenes.
Work done in collaboration with team members at @Google: Du Tran (@dutran) , Yujia Chen (@IssacCyj) , Prof. Ming-Hsuan Yang (@MingHsuanYang), Vincent Chu: and my advisor at UIUC (@siebelschool): Prof. James M. Rehg (@RehgJim).
I will be attending NeurIPS, San Diego and would be happy to chat more!
🔗Project Webpage: split-then-merge.github.io/
📄Paper: arxiv.org/abs/2511.20809
Yujia Chen retweeted
today we are releasing new research at Google. we tackle the previously unsolved task of editing motion in an existing video. it's called MotionV2V. with it you can move objects in videos, move the camera, and other unprecedented edits in user-provided video
This is crazy
ChatGPT's new Image Generation dropped less than 24 hours ago
Here are 15 great examples of what you can do now, some limitations—and a hidden trick to get instant access if you're still waiting!
1. Life-like photos:

ALT Prompt: A lifelike gym photo showing Albert Einstein lifting dumbbells, wearing a tank top and gym shorts. Sweat glistens naturally on his forehead. The lighting comes from overhead fluorescents, casting real shadows. The background includes blurred gym equipment. The photo has a raw and authentic vibe, like a candid shot during a real workout session.
Like the idea
📍 𝗖𝗮𝗻 𝗔𝗜 𝗡𝗮𝘃𝗶𝗴𝗮𝘁𝗲 𝗠𝗮𝗽𝘀 𝗟𝗶𝗸𝗲 𝗛𝘂𝗺𝗮𝗻𝘀 𝗗𝗼? 𝗜𝗻𝘁𝗿𝗼𝗱𝘂𝗰𝗶𝗻𝗴 𝗠𝗮𝗽𝗕𝗲𝗻𝗰𝗵! 🗺️🤖
𝘙𝘦𝘢𝘥𝘪𝘯𝘨 𝘮𝘢𝘱𝘴, like Google Maps and Theme Park Maps, is second nature for humans. It is a highly challenging task that requires visual understanding, spatial reasoning, and long-horizon planning. We're curious - 𝗖𝗮𝗻 𝗟𝗮𝗿𝗴𝗲 𝗩𝗶𝘀𝗶𝗼𝗻-𝗟𝗮𝗻𝗴𝘂𝗮𝗴𝗲 𝗠𝗼𝗱𝗲𝗹𝘀 (𝗟𝗩𝗟𝗠𝘀) 𝗱𝗼 𝗶𝘁 𝘁𝗼𝗼? 🤔
We’re excited to share 𝗠𝗮𝗽𝗕𝗲𝗻𝗰𝗵, the first-ever dataset and benchmark specifically designed for evaluating how well LVLMs perform on pixel-based map navigation tasks! 🚀
🔑 𝗪𝗵𝘆 𝗠𝗮𝗽𝗕𝗲𝗻𝗰𝗵 𝗶𝘀 𝗮 𝗚𝗮𝗺𝗲-𝗖𝗵𝗮𝗻𝗴𝗲𝗿:
• 📌 1600+ Complex Pathfinding Queries from 100 uniquely challenging map scenarios (urban areas, theme parks, universities, malls, and more).
• 📌 Introduces Map Space Scene Graph (MSSG): a novel data structure for mapping visual landmarks and spatial relationships to structured navigation tasks.
• 📌 Evaluates state-of-the-art LVLMs like GPT-4o, Llama-3.2, and Qwen-2-VL under zero-shot and Chain-of-Thought (CoT) reasoning methods, revealing key insights into their spatial reasoning and navigation abilities.
🚩 𝗞𝗲𝘆 𝗜𝗻𝘀𝗶𝗴𝗵𝘁𝘀:
• Despite their impressive capabilities, current LVLMs struggle significantly with spatial reasoning and structured decision-making.
• CoT prompting boosts spatial reasoning performance but sometimes introduces redundant details.
👀 𝗖𝗵𝗲𝗰𝗸 𝗼𝘂𝘁 𝗼𝘂𝗿 𝗳𝗶𝗻𝗱𝗶𝗻𝗴𝘀, 𝗱𝗮𝘁𝗮𝘀𝗲𝘁, 𝗮𝗻𝗱 𝗰𝗼𝗱𝗲 𝗵𝗲𝗿𝗲:
🔗 Arxiv: lnkd.in/gBv-sFJ3
Huge thanks to our incredible collaborators for making this happen, from @TAMU, @UCBerkeley, @mbzuai, @UMich, and @UCRiverside! 🎉
Let’s continue to bridge the gap between human intuition and AI navigation! 🗺️💡
Yujia Chen retweeted
Some papers rejected due to "incremental novelty" 🫠
We as a community should emphasize less on being novel and more on being simple, interesting, and useful.
Yujia Chen retweeted
This is interesting as a first large diffusion-based LLM.
Most of the LLMs you've been seeing are ~clones as far as the core modeling approach goes. They're all trained "autoregressively", i.e. predicting tokens from left to right. Diffusion is different - it doesn't go left to right, but all at once. You start with noise and gradually denoise into a token stream.
Most of the image / video generation AI tools actually work this way and use Diffusion, not Autoregression. It's only text (and sometimes audio!) that have resisted. So it's been a bit of a mystery to me and many others why, for some reason, text prefers Autoregression, but images/videos prefer Diffusion. This turns out to be a fairly deep rabbit hole that has to do with the distribution of information and noise and our own perception of them, in these domains. If you look close enough, a lot of interesting connections emerge between the two as well.
All that to say that this model has the potential to be different, and possibly showcase new, unique psychology, or new strengths and weaknesses. I encourage people to try it out!
Yujia Chen retweeted
It’s live! After some final tweaks ASCII converter is officially ready. Turn any image into ASCII art instantly
codepen.io/Mikhail-Bespalov/…
Yujia Chen retweeted
o3-mini might be the best LLM for real-world physics.
Prompt: "write a python script of a ball bouncing inside a tesseract"
Yujia Chen retweeted
Today, we’re announcing Veo 2: our state-of-the-art video generation model which produces realistic, high-quality clips from text or image prompts. 🎥
We’re also releasing an improved version of our text-to-image model, Imagen 3 - available to use in ImageFX through @LabsDotGoogle. → goo.gle/veo-2-imagen-3
Now you can RF-Inversion your personalized GIF in any way you want! 🔥
github.com/LituRout/RF-Inver…
Yujia Chen retweeted
Using @logtdx implementation of RF-Inversion by @Google and @litu_rout_ and @natanielruizg I think there may be a method here for consistent stylized animation frames.
If we could somehow just align these grids it would be very powerful
Grid in the second tweet
Thanks for the superrr quick reproduction!
I'll be posting more of my implementations and experiments on here from now on
For now, implementation of RF-Inversion for unsampling and editing images using Flux
github.com/logtd/ComfyUI-Flu…
!
RF Inversion reimplemented in <24 hours with some super nice results - I love this community
github.com/logtd/ComfyUI-Flu…
Look how much we can do with such simple yet efficient techniques! Sometimes you just need a clean theory with solid proofs! Great work team!

























