OddThinking

So, I have lots of photos, and some are duplicated on several web-sites, with no reference to the original source. I want to detect matches, so I can move them (and their associated meta-data) all to a single yet-to-be-determined destination.

But here’s the snag. Some of the photos have been made into different sizes and qualities for web-viewing. It would save me time if I could automatically detect this. I need an equivalent to SoundEx that works on images, so images have the same hash even if they are resized.

How would you do that? If you answered “Google it, and find what the standard solution is”, you might be smarter than me. This article is about what I did instead.

In which Julian stumbles over the concept of Chemical Word Ladders, and proceeds to generate them.

Dear Web Server Owners

Your MP3 files should have an MIME type of audio/mpeg.

I am in a dilemma about how to tell Google to not index my pages.

Alphametics (aka verbal arithmetic, cryptarithmetic and others) puzzles are an old puzzle where letters are substituted for numbers in simple equations. Go search for alphametics for lots of examples.

These puzzles never really captured my fancy, which is, weirdly enough, why I recently implemented a “puzzle helper” to help solve them.

In this article, I describe how I wrote some software to tackle the Slitherlinks puzzles.

The Compact Monthly Archive (CMA) Widget has just been released at 1.0.

This widget has been on the sidebar on the left of OddThinking for 9 months, but now it is available for you own WordPress blog.

This article focuses on that message-passing system and the variants I have tried in the puzzle-solving architecture that has evolved over a number of pet projects.

Virus 2 is a flash game with a disturbing name, but quite simple game-play.

I set out to solve it under some arbitrary constraints.

In which Jeff Atwood dismisses my experience as “naïve”…