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Graphics

Upscaling Retro 8-Bit Pixel Art To Vector Graphics 325

An anonymous reader writes "Two researchers — Johannes Kopf from Microsoft, and Dani Lischinski from The Hebrew University — have successfully created an algorithm that depixelizes and upscales low-resolution 8-bit 'pixel art' into lush vector graphics. The algorithm identifies pixel-level details (original paper — PDF) to accurately shade the new image — but more importantly, the algorithm can create smooth, curved contour lines from only-connected-on-the-diagonal single pixels. At long last, we might be able to play Super Mario Bros. on a big screen without stretching our beloved plumber's pixels to breaking point. You really must look at the sample images." Scroll down in the paper to see how their technique stacks up against some others, including Adobe's Live Trace.
Security

Adobe Download Manager Installing Software Without Consent 98

"Not all is worth cheering about as Adobe turns 20," writes reader adeelarshad82, who excerpts from a story at PC Magazine's Security Watch: "Researcher Aviv Raff has found a problem in ADM (Adobe Download Manager) and the method through which it is delivered from adobe.com. The net effect of the problem is that a user can be tricked into downloading and installing software using ADM without actual consent. Tonight Adobe acknowledged the report and said they were working on the issue with Raff and NOS Microsystems, the company that wrote ADM."

Comment Getting in over your head (Score 1) 836

As someone who spent a lot of years observing software projects gone bad ... I prefer someone with a four year degree because they have a better chance of knowing when they are in over their head. Some examples: Trying to build a mini-compiler without understanding anything about parsing, yacc, lex, etc. Trying to build a special purpose DBMS without understanding DB theory.

Security

Submission + - New Linux kernel flaw allows null pointer exploits (threatpost.com) 6

Trailrunner7 writes: A new flaw in the latest release of the Linux kernel gives attackers the ability to exploit NULL pointer dereferences and bypass the protections of SELinux, AppArmor and the Linux Security Module. Brad Spengler discovered the vulnerability and found a reliable way to exploit it, giving him complete control of the remote machine. This is somewhat similar to the magic that Mark Dowd performed last year to exploit Adobe Flash. Threatpost.com reports: "The vulnerability is in the 2.6.30 release of the Linux kernel, and in a message to the Daily Dave mailing list Spengler said that he was able to exploit the flaw, which at first glance seemed unexploitable. He said that he was able to defeat the protection against exploiting NULL pointer dereferences on systems running SELinux and those running typical Linux implementations."

Comment An Introduction to the Theory of Numbers (Score 1) 630

A book I enjoyed as the text for Freshman seminar when I was in college was Niven and Zuckerman (now Niven, Zuckerman, and Montgomery) "An Introduction to the Theory of Numbers". This book might be a stretch for a good high school senior math student. But, it has a lot of interesting material and doesn't require any college level math as a pre-requisite. Besides, who doesn't like Number Theory.

Comment Insight Required (Score 5, Insightful) 232

Speaking as someone with a Ph.D. in mathematics ...

These problems are all incredibly difficult. A lot of very good mathematicians have thought about them, in some cases for over a hundred years. In some cases, even understanding the problem requires an advanced mathematical education. If there was anything approaching an easy solution, it would have been found already. That said ...

Problems like these always require some insight. Typically, either a way to relate the problem to some other unexpected area, or some new kind of machinery that creates a leverage against the problem.

Personally, I wouldn't expect that from such an effort.

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