Posts

August 05, 2014

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2:43 PM | The Visual Microphone: Passive Recovery of Sound from Video
The research that looks at tiny changes in imaging scenes is revealing to be richer in terms of providing information. Here is the latest paper that is making the rounds on the interwebs. Let us note that similar technology used to require interferometry but that, thanks to Moore 's law through the ever redundant supply of more imaging pixels, we can now use that redundant information for what we used to think as technologies that could not exist. Without futher ado: The Visual Microphone: […]
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7:54 AM | The Best SSD Today
If I bought a solid-state drive (SSD) today, I'd get the 512GB Crucial MX100 for about $220. It's not the fastest SSD you can get, but it's close. More importantly, it has the best combination of price, performance, and capacity. Additionally, Crucial makes its own NAND flash memory and its SSDs have a history of reliability. It's about $30 cheaper than the 500GB Samsung 840 EVO and has the best price per gigabyte of all those we looked at, so it's the best choice for most people who are […]
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7:03 AM | Tested Builds: LEGO Sandcrawler, Part 2
Tested Builds: LEGO Sandcrawler, Part 2
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7:00 AM | SDCC 2014: The Giant Creature Project
No summary available for this post.
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5:00 AM | Review: Low Complexity Regularization of Linear Inverse Problems
Here is a nice review: Low Complexity Regularization of Linear Inverse Problems by Samuel Vaiter, Gabriel Peyré, Jalal M. Fadili Inverse problems and regularization theory is a central theme in contemporary signal processing, where the goal is to reconstruct an unknown signal from partial indirect, and possibly noisy, measurements of it. A now standard method for recovering the unknown signal is to solve a convex optimization problem that enforces some prior knowledge […]

August 04, 2014

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9:26 PM | Photo Gallery: The Making of Adam Savage's Hellboy Mecha-Glove
As promised, here are Adam's in-progress photos from his journey replicating Rasputin's Mecha-Glove from Hellboy. Get an up close look at the individual components that make up the piece, along with measurements and notes from every part of the build.
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8:06 PM | Generating primes in LaTeX
Inspired by a recent discussion on the wonders of , I started thinking about how easy it would be to generate prime numbers in . Well, unsurprisingly, it was presented as an example by Knuth using trial division in The TeXbook (download) in 1984: You can also do it by sieving; check out the examples […]
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5:50 PM | Testing: Traveling Abroad without a Laptop
I just got back from a two-week trip to France to see my wife's extended family. This is only my fourth time leaving the country and I've been working on paring down my travel gear to the essentials. The only thing worse than not having what you need is having a bunch of stuff you don't. This year I tried to travel as light as possible. I knew I should spend most of my time visiting family, not staring at a screen, but I also knew that two weeks without doing any sort of writing would drive me […]
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5:04 PM | SDCC 2014: Ghostbusters Terror Dog
No summary available for this post.
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5:02 PM | In Brief: The Average Price of a LEGO Brick
Since we're building LEGO on the site this week, it's a good time to revisit the economics of toy bricks. The price of a single LEGO brick is a topic that data nerds love to analyze. I've previously shared this in-depth statistical analysis of LEGO set pricing from early 2013, and Wired's wonderful Dot Physics blog tackles the topic again today. Wired's surveying of modern LEGO sets identifies an average price of about 10 center per piece--what LEGO fans and Brickset traders have known for a […]
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5:00 PM | The Best Android Smartphone for Your Network (July 2014)
You don't usually get do-overs after you choose a new phone. That privilege only comes along once every year or two, so you've got to make it count. It's getting hard to make a truly bad choice when it comes to Android phones, but why settle for good enough when you can have the best? It's time to check out the lineup on the big four US carriers and see which devices are worth your time and money.This month Samsung finally gets some serious competition from LG, and the Nexus continues to ride […]
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4:46 PM | In Brief: NASA Announces Marks 2020 Rover Payload
Last Thursday, NASA JPL announced the loadout for the still-as-yet unnamed Mars 2020 rover. The follow up to 2012's Curiosity will carry seven scientific instruments, selected from 58 proposals made by engineers and researchers worldwide. The 2020 rover is based on Curiosity's proven chassis and landing system design, with upgraded hardware to explore its surroundings. (A landing site has not yet been determined.) Among the new gear--which will be developed by partners at academic and private […]
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4:42 PM | The Paper Airplane Guy is on TV Tonight
No summary available for this post.
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11:33 AM | Engineering a waterpark
This weekend my family went to Schlitterbahn, a waterpark in New Braunfels, Texas. (The German-sounding name of the park and the city are evidence of the large number of Germans that settled in this part of Texas.) I thought about several engineering questions while we were there. Most of the rides involve sitting in an […]
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7:50 AM | Tested Builds: LEGO Sandcrawler, Part 1
Tested Builds: LEGO Sandcrawler, Part 1
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6:37 AM | Google Play App Roundup: Better Open With, Thomas Was Alone, and Solarmax 2
You can stop wading through the mess of new apps arriving in the Play Store. This is the Google Play App Roundup, your weekly source for all things new and cool on Android. Just hit the links to open the Play Store on your device. See? Isn't that easier?This week we've got a new way to open links, a game about shapes, and a game with strategic appeal.Better Open WithAndroid's "Complete action using" menu is used to choose specific apps to handle a type of link or file, but it can also set a […]
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6:30 AM | Show and Tell: The Curta Calculator
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5:00 AM | The application of Compressed Sensing for Longitudinal MRI / Multichannel Compressive Sensing MRI Using Noiselet Encoding
Performing some adpative sampling based on the fact that some initial MRI was taken earlier, this is what the first paper proposes. The second paper however is non adaptive but encodes noiselets in order to maximize incoherence.The application of Compressed Sensing for Longitudinal MRI by Lior Weizman, Yonina C. Eldar, Dafna Ben BashatPurpose: The mutual similarity of the follow-up scans in longitudinal studies is exploited on top of the well known sparse transform domains for rapid […]
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1:10 AM | Diagonalization Without Sets
Avoiding actual infinities Carl Gauss is of course beyond famous, but he had a view of infinity that was based on old ideas. He once wrote in a letter to Heinrich Schumacher in 1831: so protestiere ich zuvörderst gegen den Gebrauch einer unendlichen Größe als einer vollendeten, welcher in der Mathematik niemals erlaubt ist. Das […]

August 03, 2014

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9:00 PM | Tested Mailbag: Thanks, Elon!
No summary available for this post.
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5:00 AM | Kernel nonnegative matrix factorization without the curse of the pre-image
Kernel nonnegative matrix factorization without the curse of the pre-image by Fei Zhu, Paul Honeine, Maya KallasThe nonnegative matrix factorization (NMF) is widely used in signal and image processing, including bio-informatics, blind source separation and hyperspectral image analysis in remote sensing. A great challenge arises when dealing with a nonlinear formulation of the NMF. Within the framework of kernel machines, the models suggested in the literature do not allow the representation of […]

August 02, 2014

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11:51 PM | Sunday Morning Insight: Physics Driven Sensor Design ?
If you read this Sunday Morning Insight entry two years ago entitled "The Linear Boltzmann Equation and Co-Sparsity" you may remember that the analysis approach as used in compressive sensing (the TV norm minimization falls in that category) is nothing less than an attempt at putting some of the physics back into a signal processing problem. Co-sparsity is really a statement of how a specific operator describes field equations in homogenous media. Boundary conditions between homogenous […]

August 01, 2014

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6:17 PM | SDCC 2014: Prop Store's Screen-Used Movie Props
No summary available for this post.
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6:00 PM | Tested Builds: Quadcopter Drone, Part 5
Tested Builds: Quadcopter Drone, Part 5
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3:14 PM | January-July 2014: Seven Months of Reproducible Research
Summer generally allows for some downtime at which point I can update other pages such as the Reproducible Research ( implementations ) page, the Big Picture in Compressive Sensing or the Advanced Matrix Factorization Jungle page. Here are the implementations I will add shortly to these pages. They include all implementations listed here on the Nuit Blanche in Review starting January 2014 till yesterday's entry:Compressive SensingAdaptive-Rate Compressive […]
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3:00 PM | MakerBot Mystery Build: You'll Never Guess
No summary available for this post.
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3:11 AM | The Cantor-Bernstein-Schröder Theorem
And whose theorem is it anyway? Georg Cantor, Felix Bernstein, and Ernst Schröder are each famous for many things. But together they are famous for stating, trying to prove, and proving, a basic theorem about the cardinality of sets. Actually the first person to prove it was none of them. Cantor had stated it in […]

July 31, 2014

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11:23 PM | Episode 266 - The Green Bathmat - 7/31/2014
This week, Will, Norm, and Jeremy discuss game subscriptions, Uber ratings, octocopters, 3D printing, the Oculus DK2, and Amazon's terrible Fire phone. Enjoy!
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9:22 PM | Goldilocks software
Aaron Evans condensed a good deal of software engineering experience down to less than 140 characters: It’s amazing how much cleaner your code looks the third time writing it. First time, hack; Second over-engineer; Third = goldilocks.
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9:20 PM | Origins of category theory terms
From Saunders MacLane: Now the discovery of ideas as general as these is chiefly the willingness to make a brash or speculative abstraction, in this case supported by the pleasure of purloining words from the philosophers: “Category” from Aristotle and Kant, “Functor’ from Carnap …, and “natural transformation” from the current informal parlance.
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