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!!Con 2017: HDR Photography in Microsoft Excel?! by Kevin Chen

Confreaks · 119.2K views · 2017-05-18 · 11:47

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Overview

A short conference talk from !!Con 2017 in which Kevin Chen explains the HDR imaging algorithm from a foundational paper, framing it as a system of linear equations, and implements it in a Microsoft Excel spreadsheet. No prior image processing knowledge is needed.

On Hacker News

HN commenters recommend it as a fun, short talk that shows how HDR photography actually works through an absurdly playful implementation.

Recommended by 4 HN people across 4 months · HN mentions 2017–2025

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What people said

asafira · 2025-05 · Strong recommendation

I did my PhD in Atomic, Molecular, and Optical (AMO) physics, and despite "optical" being part of that I realized midway that I didn't know enough about how regular cameras worked! It didn't take very long to learn, and it turned out to be extremely important in the work I did during the early days at Waymo and later at Motional. I wanted to pass along this fun video from several years ago that discusses HDR: [VIDEO] . It's short and fun, I recommend it to all HN readers. Separately, if you want a more serious introduction to digital photography, I recommend the lectures by Marc Levoy from his Stanford course: [LINK] . I believe he runs his own group at Adobe now after leading a successful effort at Google making their pixel cameras the best in the industry for a couple of years. (And then everyone more-or-less caught up, just like with most tech improvements in the history of smartphones).

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levthedev · 2017-08 · Strong recommendation

You should definitely check out !!con. They have really fascinating and weird talks about all sorts of interesting CS and design topics. Plus, it's pay what you can and is located in New York, so there's lots of interesting stuff to do nearby. My favorite talk from this year was about implementing an algorithm for HDR photography purely in Microsoft Excel - [VIDEO]

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Mister_Snuggles · 2019-06 · Recommendation

My favourite (ab)use of Excel, which is already on your list, is using it for HDR photography[0]. While I'd never use it for day-to-day anything, things like this are a really interesting way to show how things like HDR photography actually work. Excel can be very approachable for stuff like this. [0] [VIDEO]

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Sources

Video by Confreaks, played through YouTube.

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