Imaging tagged posts

MAS September Meeting

There’s an App for That? Astronomy Software for the Amateur Astronomer

September MAS Presentation by Jeffrey Shokler

Is it going to be clear tonight? What’s the moon’s phase and what will I be able to see along the terminator? How bad is the smoke going to impact transparency for imaging tomorrow? Which moon of Jupiter just snuck out from behind the limb of the planet? How should I best orient my camera field of view to frame the DSO I want to shoot tonight? I haven’t seen the sky in months, what’s going to be up there this weekend when it is supposed to clear out?

Any of these questions sound familiar? If so, join Jeff as he shares his favorite “go-to” mobile, laptop, and browser-based applications and software for amateur astronomy...

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MAS February Monthly Meeting

How to See Around Corners

The light collected by a camera consists of multiple components: The direct component of light that traveled directly from a surface in the scene to the camera and many multibounce components made up of light that has been reflected more than once within the scene. The direct component carries the information about things in the line of sight of the camera. It is used to form a normal camera image. The multibounce components contain additional information about other objects that the light reflected off on it’s path from a light source to the camera.

Non-Line-of-Sight (NLOS) Imaging systems reconstruct images of scenes using this indirect light from reflections off a diffuse relay surface, like a wall or the ground...

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MAS June Monthly Meeting

Computational Imaging, One Photon at a Time

Dr. Mohit Gupta

Single-photon avalanche diodes (SPADs) are an emerging sensor technology capable of detecting and time-tagging individual photons with picosecond precision. Despite (or perhaps, due to) these capabilities, SPADs are considered specialized devices suitable only for photon-starved scenarios, and restricted to a limited set of niche applications. This raises the following questions: Can SPADs operate not just in low light, but in bright scenes as well? Can SPADs be used not just with precisely controlled active light sources such as pulsed lasers, but under passive, uncontrolled illumination like cellphone or machine vision cameras?

I will describe our recent work on designing computational imaging techniques that (a) enable single-photon...

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