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Computation & Analysis

Deck the Halls: Tweet-a-Program Holiday Ornament Challenge

It's the holiday season, and Wolfram is gearing up for bright lights and winter weather by holding a new Tweet-a-Program challenge. To help us celebrate the holidays, tweet your best holiday ornament-themed lines of Wolfram Language code. As with our other challenges, we'll use the Wolfram Language to randomly select winning tweets (along with a few of our favorites) to pin, retweet, and share with our followers. If you're a lucky winner, we'll send you a free Wolfram T-shirt! If you need some help getting into the holiday spirit, check out these examples:
Products

Machine Gun Jetpack: The Real Physics of Improbable Flight

Explore the contents of this article with a free Wolfram SystemModeler trial. Could you fly using machine guns as the upward driving force? That's the question asked in Randall Munroe's What if? article, "Machine Gun Jetpack." It turns out you could, because some machine guns have enough thrust to lift their own weight, and then some. In this post, I'll explore the dynamics of shooting machine guns downward and study the actual forces, velocities, and heights that could be achieved. I'll also repeat the warning from the What if? post: Please do not try this at home. That's what we have modeling software for. Machine gun with a squirrel on top
Education & Academic

The Wolfram Language for the Hour of Code

Get ready, get set… code! It’s the time of year to get thinking about programming with the Hour of Code. For many years, Wolfram Research has promoted and supported initiatives that encourage computation, programming, and STEM education, and we are always thrilled when efforts are taken by others to do the same. Code.org, in conjunction with Computer Science Education Week, is sponsoring an event to encourage educators and organizations across the country to dedicate a single hour to coding. This hour gives kids (and adults, too!) a taste of what it means to study computer science---and how it can actually be a creative, fun, and fulfilling process. Millions of students participated in the Hour of Code in past years, and instructors are looking for more engaging activities for their students to try. Enter the Wolfram Language. Built into the Wolfram Language is the technology from Wolfram|Alpha that enables natural language input---and lets students create code just by writing English.
Best of Blog

Extending Van Gogh’s Starry Night with Inpainting

Can computers learn to paint like Van Gogh? To some extent---definitely yes! For that, akin to human imitation artists, an algorithm should first be fed the original artists' creations, and then it will be able to generate a machine take on them. How well? Please judge for yourself. Second prize in the ZEISS photography competition Recently the Department of Engineering at the University of Cambridge announced the winners of the annual photography competition, "The Art of Engineering: Images from the Frontiers of Technology." The second prize went to Yarin Gal, a PhD student in the Machine Learning group, for his extrapolation of Van Gogh's painting Starry Night, shown above. Readers can view this and similar computer-extended images at Gal's website Extrapolated Art. An inpainting algorithm called PatchMatch was used to create the machine art, and in this post I will show how one can obtain similar effects using the Wolfram Language.
Computation & Analysis

Benedict Cumberbatch Can Charm Humans, but Can He Fool a Computer?

The Imitation Game, a movie portraying Alan Turing’s life (who would have celebrated his 100th birthday on Mathematica's 23rd birthday---read our blog post), was released this week, which we've been looking forward to. Turing machines were one of the focal points of the movie, and we launched a prize in 2007 to determine whether the 2,3 Turing machine was universal. So of course, Cumberbatch's promotional video where he impersonates other beloved actors reached us as well, which got me wondering, could Mathematica's machine learning capabilities recognize his voice, or could he fool a computer too?
Education & Academic

Deck the Halls with Lines of Coding

Thanksgiving is just around the corner, and that means you only have five weeks left to knock out your holiday shopping. Never fear, Wolfram is delivering amazing deals to customers across the globe, including North and South America, Australia, and parts of Asia and Africa to inspire a whole new year of computational creativity.
Computation & Analysis

Removing Haze from a Color Photo Image Using the Near Infrared with the Wolfram Language

For most of us, taking bad pictures is incredibly easy. Band-Aid or remedy, digital post-processing can involve altering the photographed scene itself. Say you're trekking through the mountains taking photos of the horizon, or you're walking down the street and catch a beautiful perspective of the city, or it's finally the right time to put the new, expensive phone camera to good use and capture the magic of this riverside... Just why do all the pictures look so bad? They're all foggy! It's not that you're a bad photographer---OK, maybe you are---but that you've stumbled on a characteristic problem in outdoor photography: haze. What is haze? Technically, haze is scattered light, photons bumped around by the molecules in the air and deprived of their original color, which they got by bouncing off the objects you are trying to see. The problem gets worse with distance: the more the light has to travel, the more it gets scattered around, and the more the scene takes that foggy appearance. What can we do? What can possibly help our poor photographer? Science, of course. Wolfram recently attended and sponsored the 2014 IEEE International Conference on Image Processing (ICIP), which ended October 30 in Paris. It was a good occasion to review the previous years' best papers at the conference, and we noticed an interesting take on the haze problem proposed by Chen Feng, Shaojie Zhuo, Xiaopeng Zhang, Liang Shen, and Sabine Süsstrunk [1]. Let's give their method a try and implement their "dehazing" algorithm. The core idea behind the paper is to leverage the different susceptibilities of the light being scattered, which depend on the wavelength of the light. Light with a larger wavelength, such as red light, is more likely to travel around the dust, the smog, and all the other particles present in the air than shorter wavelength colors, like green or blue. Therefore, the red channel in an image carries better information about the non-hazy content of the scene. But what if we could go even further? What prevents us from using the part of the spectrum slightly beyond the visible light? Nothing really---save for the fact we need an infrared camera. Provided we are well equipped, we can then use the four channels of data (near infrared, red, green, and blue) to estimate the haze color and distribution and proceed to remove it from our image.
Announcements & Events

2014 Wolfram Innovator Award Winners

Now in its fourth year, the Wolfram Innovator Awards are an established tradition and one of our favorite parts of the annual Wolfram Technology Conference. This year, Stephen Wolfram presented seven individuals with the award. Join us in celebrating the innovative ways the winners are using Wolfram technologies to advance their industries and fields of research.
Computation & Analysis

Fractal Fun: Tweet-a-Program Mandelbrot Code Challenge

This week Wolfram will be celebrating Benoit Mandelbrot's birthday and his contributions to mathematics by holding a Tweet-a-Program challenge. In honor of Mandelbrot, tweet us your favorite fractal-themed lines of Wolfram Language code. Then, as with our other challenges, we'll use the Wolfram Language to randomly select winning tweets (along with a few of our favorites) to pin, retweet, and share with our followers. If you win, we'll send you a free Wolfram T-shirt! In Tweet-a-Program's first few exciting months, we've already seen a number of awesome fractal examples like these: