Please create an account to participate in the Slashdot moderation system

 



Forgot your password?
typodupeerror
×

Submission + - Machine Learning Algorithms to Crack Morse Code (blogspot.com)

mni12 writes: "Morse code has been used since early 1840's and is still a very popular mode of communication especially among ham radio operators. While it takes some effort for humans to learn Morse code it is a very efficient way in communicating short messages over radio waves, especially under noise, interference, propagation fading or other adverse conditions. Experienced human operators can easily outperform any publicly available Morse decoding software.
I have done some experiments with machine learning algorithms, especially with Self Organizing Maps (SOM) applied to real-time decoding Morse code in real world noise & interference filled signals. Early test results look promising but I would like to turn to Slashdot community for some advice and ideas.

What kind of machine learning algorithms would be applicable for real time Morse decoder when signals contain a lot of noise, interference from other stations, fading, irregular timing and other problematic features?"

United States

Submission + - Forensics Expert says Al-Qaeda Images Altered

WerewolfOfVulcan writes: Wired reports that researcher Neal Krawetz revealed some veeeeeery interesting things about the Al-Qaeda images that our government loves to show off.

From the article: "Krawetz was also able to determine that the writing on the banner behind al-Zawahiri's head was added to the image afterward. In the second picture above showing the results of the error level analysis, the light clusters on the image indicate areas of the image that were added or changed. The subtitles and logos in the upper right and lower left corners (IntelCenter is an organization that monitors terrorist activity and As-Sahab is the video production branch of al Qaeda) were all added at the same time, while the banner writing was added at a different time, likely around the same time that al-Zawahiri was added, Krawetz says." Why would Al-Qaeda add an IntelCenter logo to their video? Why would IntelCenter add an Al-Qaeda logo? Methinks we have bigger fish to fry than Gonzo and his fired attorneys... }:-) The article contains links to Krawetz's presentation and the source code he used to analyze the photos.

Slashdot Top Deals

The one day you'd sell your soul for something, souls are a glut.

Working...