Leping Qiu

Take hand-written notes in mixed reality! Our #CHI2025 paper "MaRginalia" explores how mixed reality can better support university students’ note-taking during in-person lectures. Students can stay engaged without needing to look down at their devices. #HCI #XR 🧵 (1/8)

Leping Qiu reposted

Esther Lin

@estheroate.bsky.social

9 Sept 2025

Every lens leaves a blur signature—a hidden fingerprint in every photo. In our new #TPAMI paper, we show how to learn it fast (5 mins of capture!) with Lens Blur Fields ✨ With it, we can tell apart ‘identical’ phones by their optics, deblur images, and render realistic blurs.

28 Apr 2025

This is happening today at 2:10 PM during the Classroom Technology Session in G302! Come check out how mixed reality supports note-taking and facilitates engagement! #CHI2025

Leping Qiu@lepingqiu.com

MaRginalia introduces a new way to take notes and opens up further research for leveraging mixed reality for productivity and learning. 📄 Paper: arxiv.org/pdf/2501.16010 🎥 Video (4min): youtu.be/RBWh2WZriDY 🎙️ Talk (10min): youtu.be/EycV33cabZ0 👇 (7/8)

Huge thanks to my amazing collaborators: Erin Kim, Sangho Suh, Ludwig Sidenmark, and Tovi Grossman. I'll present MaRginalia as my first CHI paper in the "Classroom Technology" session on Tuesday at 2:10PM-3:40PM in Room G302. If you are a note-taker, come check out our work and chat with us! 😉 (8/8)

We introduced a Gaze+Pen interaction that operates similarly to a Wacom tablet. 👁️ Gaze is used as the initial cursor position. ✍️ Pen is used for adjusting the cursor, pushing buttons, and handwriting.👇 (5/8)

We conducted an exploratory user study with 12 participants to understand the system's usability and usefulness. Results found MaRginalia supports diverse workflows, has "good" usability on the System Usability Scale, and helps students stay engaged.👇 (6/8)

During the lecture, Marginalia automatically creates 📸 snapshots of slides and transcripts. When the user sees something important, they can directly annotate, and the content is seamlessly added to their notes.👇 (3/8)

If the user misses something, they can quickly flip through prior slides and transcripts to catch up and see their annotations.👇 (4/8)

Let us follow a user to see MaRginalia in action! The user can take handwritten notes on the tablet like they usually do, or take notes with mixed reality so that they can look at the lecture and stay engaged.👇 (2/8)

buff.lyT-Mobile’s parent company is making an ‘AI Phone’ with Perplexity AssistantIt’s the “app-less” phone.

3 Mar 2025

Is this going to be the phone to realize the a-world-without-apps vision? Curious of how they will market this to people walking into a T-Mobile store looking to replace their broken iPhone 👀

The Verge@theverge.com

T-Mobile’s parent company is making an ‘AI Phone’ with Perplexity Assistant