48 citations · 85 across the 10 of their papers we have counts for
12 papers
Blind as a bat: audible echolocation on small robots
Frederike Dümbgen, Adrien Hoffet, Mihailo Kolundžija +2
For safe and efficient operation, mobile robots need to perceive their environment, and in particular, perform tasks such as obstacle detection, localization, and mapping. Although…
Lippmann Photography: A Signal Processing Perspective
Gilles Baechler, Michalina Pacholska, Arnaud Latty +2
Lippmann (or interferential) photography is the first and only analog photography method that can capture the full color spectrum of a scene in a single take. This technique, inven…
How Asynchronous Events Encode Video
Karen Adam, Adam Scholefield, Martin Vetterli
As event-based sensing gains in popularity, theoretical understanding is needed to harness this technology's potential. Instead of recording video by capturing frames, event-based…
Asynchrony Increases Efficiency: Time Encoding of Videos and Low-Rank Signals
Karen Adam, Adam Scholefield, Martin Vetterli
In event-based sensing, many sensors independently and asynchronously emit events when there is a change in their input. Event-based sensing can present significant improvements in…
Realizability of Planar Point Embeddings from Angle Measurements
Frederike Dümbgen, Majed El Helou, Adam Scholefield
Localization of a set of nodes is an important and a thoroughly researched problem in robotics and sensor networks. This paper is concerned with the theory of localization from inn…
Matrix recovery from bilinear and quadratic measurements
Michalina Pacholska, Karen Adam, Adam Scholefield +1
Matrix (or operator) recovery from linear measurements is a well-studied problem. However, there are situations where only bilinear or quadratic measurements are available. A bilin…
Encoding and Decoding Mixed Bandlimited Signals using Spiking Integrate-and-Fire Neurons
Karen Adam, Adam Scholefield, Martin Vetterli
Conventional sampling focuses on encoding and decoding bandlimited signals by recording signal amplitudes at known time points. Alternately, sampling can be approached using biolog…
Sampling and Reconstruction of Bandlimited Signals with Multi-Channel Time Encoding
Karen Adam, Adam Scholefield, Martin Vetterli
Sampling is classically performed by recording the amplitude of an input signal at given time instants; however, sampling and reconstructing a signal using multiple devices in para…
Embedded polarizing filters to separate diffuse and specular reflection
Laurent Valentin Jospin, Gilles Baechler, Adam Scholefield
Polarizing filters provide a powerful way to separate diffuse and specular reflection; however, traditional methods rely on several captures and require proper alignment of the fil…
Bound and Conquer: Improving Triangulation by Enforcing Consistency
Adam Scholefield, Alireza Ghasemi, Martin Vetterli
We study the accuracy of triangulation in multi-camera systems with respect to the number of cameras. We show that, under certain conditions, the optimal achievable reconstruction…
On the Accuracy of Point Localisation in a Circular Camera-Array
Alireza Ghasemi, Adam Scholefield, Martin Vetterli
Although many advances have been made in light-field and camera-array image processing, there is still a lack of thorough analysis of the localisation accuracy of different multi-c…
SHAPE: Linear-Time Camera Pose Estimation With Quadratic Error-Decay
Alireza Ghasemi, Adam Scholefield, Martin Vetterli
We propose a novel camera pose estimation or perspective-n-point (PnP) algorithm, based on the idea of consistency regions and half-space intersections. Our algorithm has linear ti…