Monday, August 27, 2007

What is reCAPTCHA?

Digitizing Books One Word at a Time

A CAPTCHA is a program that can tell whether its user is a human or a computer. You've probably seen them — colorful images with distorted text at the bottom of Web registration forms. CAPTCHAs are used by many websites to prevent abuse from "bots," or automated programs usually written to generate spam. No computer program can read distorted text as well as humans can, so bots cannot navigate sites protected by CAPTCHAs.

About 60 million CAPTCHAs are solved by humans around the world every day. In each case, roughly ten seconds of human time are being spent. Individually, that's not a lot of time, but in aggregate these little puzzles consume more than 150,000 hours of work each day. What if we could make positive use of this human effort? reCAPTCHA does exactly that by channeling the effort spent solving CAPTCHAs online into "reading" books.

To archive human knowledge and to make information more accessible to the world, multiple projects are currently digitizing physical books that were written before the computer age. The book pages are being photographically scanned, and then, to make them searchable, transformed into text using "Optical Character Recognition" (OCR). The transformation into text is useful because scanning a book produces images, which are difficult to store on small devices, expensive to download, and cannot be searched. The problem is that OCR is not perfect.

Embedding Google Maps

Fortunately, there are sites that solve this problem and provide you some code you can paste in your site. Map Generator is very easy to use: enter the address, the type of map (street-level, satellite or hybrid), its dimensions and you could build a map like this:

http://www.map-generator.net/map.php?name=HyperActive.ca&addres

Tuesday, August 14, 2007

Embedding Google Maps

Fortunately, there are sites that solve this problem and provide you some code you can paste in your site. Map Generator is very easy to use: enter the address, the type of map (street-level, satellite or hybrid), its dimensions and you could build a map like this:

http://www.map-generator.net/map.php?name=HyperActive.ca&address=201-33%20Roydon%20Place%20Ottawa%20ON%20Canada&width=500&height=400&maptype=map&zoom=14

Embedding Google Maps

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Tuesday, August 7, 2007

Innovation at Google Video

Here's "Innovation at Google", a 50 minute presentation that will definitely not bore you.