Search / 137 posts tagged geo-location

Researchers at Carnegie Mellon have devised an algorithm to determine where on earth a photo was taken, according to UPI. Using millions of GPS-tagged photos on Flickr, the algorithm compares the selected photo with others that have a similar distribution of textures and colors and the number and orientation of lines.

Part one of my new series “mobile apps I’d like someone to build“, where I’m going to collect all those mobile apps I’d love to use, but can’t build myself. On my Blackberry I’m kind of restricted in terms of mobile apps, so I might have to switch to an iPhone or some flavor of Nokia device when these apps are built.

Find Stuff By Minimum Bounding Rectangle June 13, 2008 – 2:34 pm MySQL offers ENVELOPE() to find the minimum bounding rectangle of a geometric object. The result is a polygon with four segments, defined by five points.

Working With Spatial Data in MySQL June 12, 2008 – 11:41 am It’s MySQL spatial data week here, though I am spreading out the posts to, um, ease the pain (or boredom). Anyway, here are some commands/functions I don’t want to forget about later: Start with an existing table called geometry, add a

MySQL has some powerful, and perhaps underused spatial extensions, but the most interesting functions are still unimplemented: “Note: Currently, MySQL does not implement these functions…” Among those as-yet unimplemented functions is DISTANCE(). Alternatives can be found here and here, though neither is clean or simple.

Our growing ability to use the Internet as a giant database, apply that information in a creative way to build interesting mash-up applications, and then apply them to markets — stock, real estate or fantasy — is an area that holds a lot of fascination for me.

MySQL Documentation June 8, 2008 – 8:44 pm Found in the MySQL 5.0 Reference Manual: Related(g1,g2,pattern_matrix) Returns 1 or 0 to indicate whether the spatial relationship specified by pattern_matrix exists between g1 and g2. Returns –1 if the arguments are NULL. The pattern matrix is a string.

Another day, another very creepy instance of user tracking: As CNN reports, scientists at Northeastern University used cell phone data to track the whereabouts of 100.000 cell phone users: Researchers used cell phone towers to track individuals’ locations whenever they made or received phone calls and text messages over six months.

Google Webmaster Central Blog, Yahoo Search Blog and the Microsoft Live Search Webmaster Center Blog have come out with quite informative documentation about Robot Exclusion Protocol, Last year in... Click to continue reading...

Maile Ohye over at the Google Webmaster Central Blog has a great post about how Google defines three issues that often arise for site owners and Webmasters: IP Delivery, Geolocation and Cloaking. ... Online marketing tips and search engine news at SEO-Space.