STUFF BY KEVIN KWOK

Protobowl real time multiplayer quizbowl game. Protobowl is a real time website for competing with friends and strangers on trivia knowledge. It runs both online and offline, and includes a database of over 90,000 questions comprised of Quizbowl, Jeopardy, Science Bowl and Certamen questions. With over a thousand daily players each

staying for

ABOUT - ANTIMATTER15 Hi. I’m Kevin Kwok, and I’m currently a junior at MIT, and this is my obligatory online presence or whatever.. This is my little corner of the internet, where I talk about random projects and ideas and stuff. If you want to contact me or read obnoxiously nostalgic autobiographical trivia,

AJAX ANIMATOR

web based multimedia authoring platform. Created with Raphaël. 1

AJAX ANIMATOR

Ajax Animator for iPad Updates 17 June 2010. This isn’t really new, but I just remembered to write a post about it. Ajax Animator for iPad got a relatively minor, but certainly pretty important update.. The new update incorporates the TouchScroll javascript library to have nice flick-to-scroll-ness throughout native iPad apps.. The VectorEditor core had a few bug fixes, rotation now works OCRAD.JS - OPTICAL CHARACTER RECOGNITION IN JAVASCRIPT What about GOCR.js? If you stumbled upon that page first, you might have realized that this entire page is a heinous act of plagiarism probably worthy of academic suspension— if not for the fact that I made that other page as well. It turns out that porting things with Emscripten is just so gosh-darned easy and addictive (don't tell the DEA I don't have an permscription). STICK2 ΑQ - ANTIMATTER15TRANSLATE THIS PAGE Angle: ° Length: px Width: px Add new frame. WHAMMY - ANTIMATTER15 WebP is basically VP8's intraframe compression in an itsy-bitsy-yellow-polka-dot RIFF container. Thus it's possible to use native WebM video decoding support to polyfill support for viewing WebP images, as well as the inverse— using a browser's WHAMMY: A REAL TIME JAVASCRIPT WEBM ENCODER This is sort of a conceptual reversal (or not, this might just be making the description needlessly confusing) of one of my older projects,Weppy.First, what Weppy did was it added support for WebP in browsers which didn’t support it by converting it into a

single-frame video.

JAVASCRIPT TO (ANIMATED) GIF WEPPY: JAVASCRIPT SHIM FOR WEBP ON CHROME 6 AND FIREFOX 4 6 Responses. Stay in touch with the conversation, subscribe to the RSS feed for comments on this post.

STUFF BY KEVIN KWOK

Protobowl real time multiplayer quizbowl game. Protobowl is a real time website for competing with friends and strangers on trivia knowledge. It runs both online and offline, and includes a database of over 90,000 questions comprised of Quizbowl, Jeopardy, Science Bowl and Certamen questions. With over a thousand daily players each

staying for

ABOUT - ANTIMATTER15 Hi. I’m Kevin Kwok, and I’m currently a junior at MIT, and this is my obligatory online presence or whatever.. This is my little corner of the internet, where I talk about random projects and ideas and stuff. If you want to contact me or read obnoxiously nostalgic autobiographical trivia,

AJAX ANIMATOR

web based multimedia authoring platform. Created with Raphaël. 1

AJAX ANIMATOR

Ajax Animator for iPad Updates 17 June 2010. This isn’t really new, but I just remembered to write a post about it. Ajax Animator for iPad got a relatively minor, but certainly pretty important update.. The new update incorporates the TouchScroll javascript library to have nice flick-to-scroll-ness throughout native iPad apps.. The VectorEditor core had a few bug fixes, rotation now works OCRAD.JS - OPTICAL CHARACTER RECOGNITION IN JAVASCRIPT What about GOCR.js? If you stumbled upon that page first, you might have realized that this entire page is a heinous act of plagiarism probably worthy of academic suspension— if not for the fact that I made that other page as well. It turns out that porting things with Emscripten is just so gosh-darned easy and addictive (don't tell the DEA I don't have an permscription). STICK2 ΑQ - ANTIMATTER15TRANSLATE THIS PAGE Angle: ° Length: px Width: px Add new frame. WHAMMY - ANTIMATTER15 WebP is basically VP8's intraframe compression in an itsy-bitsy-yellow-polka-dot RIFF container. Thus it's possible to use native WebM video decoding support to polyfill support for viewing WebP images, as well as the inverse— using a browser's WHAMMY: A REAL TIME JAVASCRIPT WEBM ENCODER This is sort of a conceptual reversal (or not, this might just be making the description needlessly confusing) of one of my older projects,Weppy.First, what Weppy did was it added support for WebP in browsers which didn’t support it by converting it into a

single-frame video.

JAVASCRIPT TO (ANIMATED) GIF WEPPY: JAVASCRIPT SHIM FOR WEBP ON CHROME 6 AND FIREFOX 4 6 Responses. Stay in touch with the conversation, subscribe to the RSS feed for comments on this post. PLAYER - ANTIMATTER15 player. This used the new feature to load entire directories from the local computer. It uses FileReader and JSID3v2 in order to read song metadata. The interface is dominated by a gigantic search bar, and it has a fairly minimal interface for queuing songs. related. SHINYTOUCH - ANTIMATTER15 ShinyTouch. You can make any flat, semi-reflective surface into a multitouch tablet with nothing more than an ordinary webcam pointed at an angle. Critically, it's possible to extract 3D information from a scene captured by a 2D camera by measuring the distance between an object and its reflection about a known surface.

AJAX ANIMATOR

Ajax Animator for iPad Updates 17 June 2010. This isn’t really new, but I just remembered to write a post about it. Ajax Animator for iPad got a relatively minor, but certainly pretty important update.. The new update incorporates the TouchScroll javascript library to have nice flick-to-scroll-ness throughout native iPad apps.. The VectorEditor core had a few bug fixes, rotation now works GOCR.JS - ANTIMATTER15 Below is a simple demo, which should hopefully demonstrate the capabilities but will more likely show the substantial limitations of the library. Hit the buttons on the left to reset the canvas or to randomly put some text in a random font. You can also try to draw

something.

OFFLINE WIKI

Offline Wiki Redux 30 December 2011. Screenshot. There’s just something incredibly alluring about the concept of holding the sum of human knowledge with you at all times. While near-ubiquitous connectivity alleviates this to a certain extent, the momentary lapses of networking are incredibly corrosive to an information dependent

mentality.

PROTOBOWL - ANTIMATTER15.COM Protobowl was designed first with a flexible sync architecture. However, regrettably, it wasn’t designed with the idea of Offline-first. Don’t get me wrong, offline works great, but it’s implemented with a offline.coffee which is largely (I’d say 80%) a reimplementation of methods in web.coffee. EULERIAN VIDEO MAGNIFICATION IN THE BROWSER Welcome to the exciting June edition of Tales From The Backlog.This particular entry is from two semesters ago, when I took 6.819/6.869 Advances in Computer Vision taught by Professor Bill Freeman and Antonio Torralba.. For our final project, we had to reproduce some computer vision algorithm from a list. FORKSWIF - ANTIMATTER15 Hi. I’m Kevin Kwok, and I’m currently a junior at MIT, and this is my obligatory online presence or whatever.. This is my little corner of the internet, where I talk about random projects and ideas and stuff. If you want to contact me or read obnoxiously nostalgic autobiographical trivia, check out the about section. CLONING WORD LENS WITH OPENCV 3.0 Word Lens was launched nearly 5 years ago, but it still feels like a relic borrowed from the distant future.It understandably took the world by storm, and a few years later it was acquired by Google and folded into the Google Translate app.. Word Lens was an augmented reality translation app— it showed you the world as if through a camera viewfinder but miraculously substituted words written PURE JAVASCRIPT HTML5 TO (ANIMATED) GIF CONVERSION AS3GIF lets you play and encode animated GIF’s with ActionScript 3. Since web pages can usually natively play GIFs fine, it’s only a port of the GIFEncoder portions of the library. Basic Usage. Since it pretty much is GIFEncoder, you could consult the as3gif how-to page. But there are some differences so I’ll cover it here anyway. somewhere to talk about random ideas and projects like everyone else STUFF BY ANTIMATTER15 Hi. I’m KEVIN KWOK, and I’m currently a junior at MIT, and this is my obligatory online presence or whatever. This is my little corner of the internet, where I talk about random projects and ideas and stuff. If you want to contact me or read obnoxiously nostalgic autobiographical trivia, check out the about section.

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TAGS

3D actionscript ajax ajax animator api apple arduino

art awesome blog

browser bugfix canvas

change chrome code

color colors css design

doge elitist evil

experiment export extension

ExtJS fast features

firefox flash format

function future GAE

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progress prototype python raphael release rewrite school security shiny ShinyTouch simple site small speed SVG touch update upload user interface

vector vectoreditor

version video vision vp8 vX JS wave webcam wikify wikipedia wordpress RECOVERING DELETED DATA FROM LEVELDB LATEST HALF-DECENT BLOG POST, I

HOPE

It was 4am this morning, and I did something stupid. I was trying to write something which would automatically delete all empty documents. Within a few seconds of running it, all my precious data was

gone. Oops.

There’s probably some grander lesson to be learned about keeping routine backups and not being an idiot. But the strength of that parable is somewhat weakened because I did manage to get the

data back.

Read More ❯

-------------------------

posts

* 16 December 2015

METHODS AND FUNCTIONS something something functional programming

* 30 August 2015

$15 SMARTPHONE

Optimistically Buying an Excessive Number of LG Optimus Exceed 2

* 30 June 2015

INVISIBLE MOTION

Eulerian Video Magnification in the Browser

* 30 June 2015

6.115 FINAL PROJECT

Handwriting Recognition with Microcontrollers

* 30 May 2015

MINIFFT

Cooley-Tukey FFT + DCT + IDCT in under 1K of Javascript

* 11 April 2015

BLOG REBOOT

Hopefully this design will last another 7 years -------------------------

projects

PROJECT NAPTHA HIGHLIGHT, COPY AND TRANSLATE TEXT FROM ANY IMAGE Project Naptha started out as "Images as Text" the 2nd place winning entry to 2013's HackMIT Hackathon. It launched 5 months later, reaching 200,000 users in a week, and was featured on the front page of Hacker News, Reddit, Engadget, Lifehacker, The Verge, and PCWorld.

OCRAD.JS

optical character recognition in javascript with emscripten

INPAINT.JS

erase regions and objects from pictures in javascript

PHASH.JS

perceptual hashing for content-based image retrieval in javascript AJAX ANIMATOR CREATE AND SHARE ANIMATIONS IN THE BROWSER Ajax Animator was probably my first large project— I started it after I had exhausted all the free trials of Macromedia Flash for making silly cartoons in 5th grade. As my primary focus from the latter half of 6th grade until my early sophomore year of high school, it evolved through many different iterations and spun off several smaller projects. I started by downloading Mark Finkle's RichDraw SVG/VML drawing component and pasted code snippets from various DHTML widget sites until I had something that looked vaguely like the Flash I knew. Over the years, as I've learned more about programming, I've rewritten the app several times— going from raw HTML and docment.write to DHTMLSuite to YUI/Ext to Ext 2.0. Ajax Animator has been featured on MakeUseOf, InfoQ, and has its own

Wikipedia article.

SCRATCHPAD

simple cross browser scratchpad used by Khan Academy

STICK2

a simple skeleton based stop-motion stick figure animator

JSGIF

a port of AS3GIF to generate animated gifs entirely in the browser

JSVECTOREDITOR

cross browser vector graphics editor powered by RaphaelJS

FORKSWIF

a simple prototype of an swf authoring tool in C# based on swfmill

and svgpaint

SHINYTOUCH ZERO-COST OPTICAL TOUCHSCREEN RETROFIT You can make any flat, semi-reflective surface into a multitouch tablet with nothing more than an ordinary webcam pointed at an angle. Critically, it's possible to extract 3D information from a scene captured by a 2D camera by measuring the distance between an object and its reflection about a known surface. ShinyTouch won 1st place at the Fairfax County Regional Science and Engineering Fair, and competed at the Virginia State Science Fair. It was recognized by the Optical Society of America (where I recieved a book punnily titled _Optics Made Clear_), the US Patent Office and the

IEEE.

PROTOBOWL REAL TIME MULTIPLAYER QUIZBOWL GAME Protobowl is a real time website for competing with friends and strangers on trivia knowledge. It runs both online and offline, and includes a database of over 90,000 questions comprised of Quizbowl, Jeopardy, Science Bowl and Certamen questions. With over a thousand daily players each staying for half hour on average, it eats a month of humanity every day. Skynet would be proud. CLOUD SAVE ONE CLICK SAVE TO ANY CLOUD STORAGE LOCKER Cloud Save featured on Lifehacker, MakeUseOf, TheNextWeb, GHacks.net, HowToGeek, MacWorld, ComputerWorld, ITWorld. Surplus featured on Business Insider, Lifehacker, TheNextWeb,

MakeUseOf.

Drag2Up featured on Techcrunch, CNet, Lifehacker.

SURPLUS

Google+ notifications integration with Google Chrome

DRAG2UP

drag and drop files from your desktop onto any text field to automatically upload and share

CLOUDFALL

sublime-like text editor with dropbox sync OFFLINE WIKI BROWSE THE FULL TEXT OF WIKIPEDIA OFFLINE In middle school, I had an iPhone— but it didn't actually have cell service, which led to more than a few expeditions for the fabled WiFi. My favorite app was Patrick Collison's Encyclopedia

,

which contained the full compressed contents of the English Wikipedia. It left a powerful impression on me— I felt the true power of a real-life Hitchhiker's Guide.

PROJECT WIKIFY

edit any website and share changes

OFFLINE DICTIONARY

look up words and definitions on Wiktionary

BZIP2.JS

a port of some bzip2 decompressor to javascript ICOSAHEDRON CONTRARY TO POPULAR BELIEF, THIS IS IN FACT NOT A

DODECAHEDRON

DORM WEATHER

the art of collecting data and totally forgetting about it

DROSTE DORM

a poster on my wall, of my wall, featuring a particular poster WHAMMY A REAL TIME INTRAFRAME WEBM ENCODER IN JAVASCRIPT WebP is basically VP8's intraframe compression in an itsy-bitsy-yellow-polka-dot RIFF container. Thus it's possible to use native WebM video decoding support to polyfill support for viewing WebP images, as well as the inverse— using a browser's WebP encoding capability to generate WebM videos.

H.264 VS VP8

the (mostly wrong) ambiguity of "open" and video codecs

WEPPY

lightweight polyfill for WebP images in modern browsers today

CHROMECORDER

create screencasts and export them as WebM or a single compressed PNG MUSICALPHA REVERSE-ENGINEERED GOOGLE MUSIC UPLOADER For a long time, Google Music could only upload songs with a proprietary uploader that only ran on Mac OS and Windows. With a bit (literally) of IDA Pro twiddling, it's possible to dump and reverse-engineer the protobufs that get sent to the server to negotiate file uploading. MusicAlpha is a prototype of a cross-platform implementation of the uploader as a Chrome app.

PLAYER

probably the first browser based mp3 player which could load local

files

EXFM EXTRAS

an extension to an extension to read ID3v2 metadata when importing

music

JS ID3V2

a javascript library for reading ID3 tags from MP3 files MICROWAVE MOBILE-FRIENDLY GOOGLE WAVE CLIENT I spent the first year of high school mildly obsessed with Google Wave. To be fair, I still think it's pretty cool— but apparently that opinion was a minority one. One problem was that they had tried to replace everything— email, instant messaging, google docs, mailing lists and web pages— severing their ties with the outside world. Everything was contained within a bloated operating-system of a web app. Microwave was the first real third party Google Wave client. Wave Reader uses Microwave's core (magnetron?) to to publish waves as plain

web pages.

WAVE READER

publish waves to the web with anonymous commenting and embedded

gadgets

WORD ASSOCIATION

a simple wave gadget for collaboratively building simple mindmaps

AWESOMENESS

a prototype of a federated real-time hierarchical messaging system

COMET RPG

an online multiplayer rpg from middle school FACEBOOK CLOCK VISUALIZING WHEN FRIENDS ARE ACTIVE ON FACEBOOK Everyone has a bit of a daily rhythm, which often for better or worse includes scattered visitations of Facebook. I wrote a simple script which polled the Graph API every minute for a list of online friends. Each ring in the chart represents a single friend's 24 hour Facebook routine with centrality indicating total time spent. To the extent that you are your group of friends, this could be thought of as a sort of sociotemporal fingerprint.

SCHEDULE COMPARE

discover classmates automatically by parsing facebook status updates

CHAT BOT

turing complete collatz tag code over facebook chat

ACTIVITY PLOT

a small experiment graphing historical profile information I'm a tiny footer, please don't squish me