SCIEN Talk

High-quality 3D object recognition is an important component of many vision and robotics systems. We tackle the object recognition problem using two data representations: Volumetric representation, where the 3D object is discretized spatially as binary voxels - 1 if the voxel is occupied and 0 otherwise. Pixel representation where the 3D object is represented as a set of projected 2D pixel images. At the time of submission, we obtained leading results on the Princeton ModelNet challenge. Some of the best deep learning architectures for classifying 3D CAD models use Convolutional Neural Networks (CNNs) on pixel representation, as seen on the ModelNet leaderboard. Diverging from this trend, we combine both the above representations and exploit them to learn new features. This approach yields a significantly better classifier than using either of the representations in isolation. To do this, we introduce new Volumetric CNN (V-CNN) architectures.

Polarization interferometers are interferometers that utilize birefringent crystals in order to generate an optical path delay between two polarizations of light. In this talk I will describe how I have employed polarization interferometry to make two kinds of Fourier imaging spectrometers; in one case, by temporally scanning the optical path delay with a liquid crystal cell, and in the other, utilizing relative motion between scene and detector to spatially scan the optical path delay through a position-dependent wave plate.

Modern systems-on-a-chip (SoC) have many different types of processors that could be used in computational imaging. Unfortunately, they all have different programming models, and are thus difficult to optimize as a system. In this talk we discuss various standards (OpenCL, OpenVX) and domain-specific programming languages (Halide, Proximal) that make it easier to accelerate processing for computational imaging.

Deep learning has driven huge progress in visual object recognition in the last five years, but this is one aspect of its application to imaging. This talk will provided a brief overview deep learning and artificial neural networks in computer vision, before delving into wide range of application Google has pursued in this area. Topics will include image summarization, image augmentation, artistic style transfer, and medical diagnostics.

In my childhood I invented a new kind of lock-in amplifier and used it as the basis for the world's first wearable augmented reality computer (http://wearcam.org/par). This allowed me to see radio waves, sound waves, and electrical signals inside the human body, all aligned perfectly with the physical space in which they were present. I built this equipment into special electric eyeglasses that automatically adjusted their convergence and focus to match their surroundings. By shearing the spacetime continuum one sees a stroboscopic vision in coordinates in which the speed of light, sound, or wave propagation is exactly zero (http://wearcam.org/kineveillance.pdf), or slowed down, making these signals visible to radio engineers, sound engineers, neurosurgeons, and the like. See the attached picture of a violin attached to the desk in my office at Meta, where we're creating the future of computing based on Human-in-the-Loop Intelligence (https://en.wikipedia.org/wiki/Humanistic_intelligence).

More Information: http://weartech.com/bio.htm

Imaging has become an essential part of how we communicate with each other, how autonomous agents sense the world and act independently, and how we research chemical reactions and biological processes. Today's imaging and computer vision systems, however, often fail in critical scenarios, for example in low light or in fog. This is due to ambiguity in the captured images, introduced partly by imperfect capture systems, such as cellphone optics and sensors, and partly present in the signal before measuring, such as photon shot noise. This ambiguity makes imaging with conventional cameras challenging, e.g. low-light cellphone imaging, and it makes high-level computer vision tasks difficult, such as scene segmentation and understanding.

In this talk, I will present several examples of algorithms that computationally resolve this ambiguity and make sensing and vision systems robust. These methods rely on three key ingredients: accurate probabilistic forward models, learned priors, and efficient large-scale optimization methods. In particular, I will show how to achieve better low-light imaging using cell-phones (beating Google's HDR+), and how to classify images at 3 lux (substantially outperforming very deep convolutional networks, such as the Inception-v4 architecture). Using a similar methodology, I will discuss ways to miniaturize existing camera systems by designing ultra-thin, focus-tunable diffractive optics. Finally, I will present new exotic imaging modalities which enable new applications at the forefront of vision and imaging, such as seeing through scattering media and imaging objects outside direct line of sight.

This workshop will bring together scientists and engineers who are advancing sensor technologies, computer vision, machine learning, head-mounted displays and our understanding of human vision, and developers who are creating new and novel applications for augmented and mixed reality in retail, education, science and medicine.

Cruise is developing and testing a fleet of self driving cars on the streets of San Francisco. Getting these cars to drive is a hard engineering and science problem - this talk explains roughly how self driving cars work and how computer vision, from camera hardware to deep learning, helps make a self driving car go.

More Information: https://www.getcruise.com/
see also http://www.theverge.com/2017/1/19/14327954/gm-self-driving-car-cruise-chevy-bolt-video

Lab experiments have long played an important role in behavioral science, in part because they allow for carefully designed tests of theory, and in part because randomized assignment facilitates identification of causal effects. At the same time, lab experiments have traditionally suffered from numerous constraints (e.g. short duration, small-scale, unrepresentative subjects, simplistic design, etc.) that limit their external validity. In this talk I describe how the web in general—and crowdsourcing sites like Amazon's Mechanical Turk in particular—allow researchers to create "virtual labs" in which they can conduct behavioral experiments of a scale, duration, and realism that far exceed what is possible in physical labs. To illustrate, I describe some recent experiments that showcase the advantages of virtual labs, as well as some of the limitations. I then discuss how this relatively new experimental capability may unfold in the future, along with some implications for social and behavioral science.

The continuous increase in performance and the versatility of ARRI´s digital motion picture camera systems led to our development of the first fully digital stereoscopic operating microscope, the ARRISCOPE. For the last 18 months' multiple units have been used in clinical trials at renowned clinics in the field of Otology in Germany.
During our presentation we will cover the obstacles, initial applications and future potentials of 3D camera based surgical microscopes and give an insight into the technical preconditions and advantages of the digital imaging chain. In conclusion of the presentation, examples of different surgical procedures recorded with the ARRISCOPE and near future augmented and virtual reality 3D applications will be demonstrated.

More Information: http://www.arrimedical.com/