Terence Eden. He has a beard and is smiling.

Terence Eden’s Blog

Theme Switcher:

Reverse Engineering the .IRG infrared thermal imaging format - help needed

· 12 comments · 500 words · Viewed ~1,830 times


My smiling post. My nose is very cold.

I always find it depressing when I reach the limits of my abilities. I have a new Thermal Imaging camera. It automatically saves photos in two formats. The first is a standard JPEG with false colours and metadata superimposed. The second is a .irg file which can only be opened by the Windows-only software which comes with the camera. Judging from what that software shows, the .irg contains a …

Get Chartered!

· 2 comments · 500 words · Viewed ~228 times


Photo of Michael Caine holding a shotgun from the movie Get Carter. The text says "Get Chartered".

Computing is a comparatively young industry. We don't have hundreds of years of history, or secret societies jealously guarding our knowledge, or much love for hierarchy. This makes it difficult to progress in a world which values strict demarcations between people. There's an obvious and well documented path from Army Private to Sergeant. If you're an architect (the kind that designs…

The Mobile Phones of Doctor Who - The Motherlode of Props

· 8 comments · 1,200 words · Viewed ~7,847 times


A big jumble of mobile phones.

If you're a Doctor Who fan - I promise that this post is going to please you greatly! The Internet is a weird and delightful place. For years now, I've been running a blog series about the Mobile Phones of Doctor Who. I went through every episode and painstakingly identified every mobile the cast used. People chipped in with their suggestions if I wasn't able to definitively state which phone…

Restaurant Review: Gauthier Soho

· 3 comments · 1,200 words · Viewed ~940 times


Photo of a play of pasta, black truffle shavings, and white wine.

I don't think I've ever spent £400 on a meal for two before...! Let's get that out of the way first. We decided to go out to celebrate our wedding anniversary, the completion of my MSc, Liz being appointed to a committee, and... you know what? Fuck you! It has been a bastard of a pandemic and we wanted a night of ridiculously extravagant luxury dining - and boy did we get it! Gauthier is a …

Gadget Review - X-Sense Wireless Interlinked Heat Alarm XH02-W

· 300 words


Product shot of a heat alarm.

Last year, I reviewed the X-Sense wireless interlinked smoke alarms. They were a multipack of smoke alarms - set one off in the kitchen and the one in your bedroom will start chirping. As I noted at the time, they were only smoke alarms. Without an interlinked heat alarm, they may not have been compliant with Scottish legislation. Well, I'm pleased to say the fine folk at X-Sense have released…

Regular Expressions make me feel like a powerful wizard - and that's not a good thing

· 28 comments · 600 words · Viewed ~5,569 times


A confused little cardboard robot is lost amongst the daisies

(This is a rant because I'm exhausted after debugging something. If you've made RegEx your whole personality, I'm sorry.) The other day I had to fix a multi-line Regular Expression (RegEx). After a few hours of peering at it with a variety of tools, I finally understood the problem. Getting that deep into the esoteric mysteries made me feel like a powerful wizard with complete mastery of my…

A practical example of the social construct of race

· 3 comments · 550 words · Viewed ~302 times


Dropdown box asking for my race or ethnicity. The options are Malay, Chinese, Indian, or other.

I've been reading lots of books about race, justice, and history. One of the things which confused me when I started this journey was the notion that race is a construct. But then I started reading about how Blumenbach literally invented the concept of distinct human races. And about how the discredited "Science" of race is making a comeback. And then about the Philosophy of Race weaves its…

Gadget Review: Topdon TC004 Infrared Camera

· 1 comment · 950 words · Viewed ~3,162 times


Liz is rendered in warm colours. The freezer is dark. The temperature range goes from mid 30C to -17C.

A few years ago, I tried out that Seek Thermal Compact Infrared Camera which is a USB addon for phones. It was a good gadget, but had a number of compromises to get it into such a small form-factor. I've just been sent the TopDon TC004 handheld thermal camera to review. It's a chunky beast of a device. About the same size as a large barcode scanner - and pretty weighty. It promises superb…

The Mobile Phones of Doctor Who - Bonus Pyramid at the End of the World. And a sneak peek...

· 3 comments · 450 words · Viewed ~235 times


General talking on a sat phone.

If you're a Doctor Who fan, this post contains a lovely little surprise at the end. I promise you it'll be worth it. For a few years now, I've been running a blog series about the Mobile Phones of Doctor Who. I'm only human, so I occasionally miss some of the devices. A reader contacted me to say I'd missed three phones from the Series 10 episode Pyramid at the End of the World. Firstly, a…

Why don't we just eat grass?

· 5 comments · 400 words


Photo of a glass of milk and some cheese in a field of grass.

I read an interesting discussion the other day about why humans (mostly) don't eat carnivorous mammals. It boiled down to a few main points: Carnivores often don't taste good due to their relative lack of fat and stringy muscles. Aggressive animals are hard to domesticate. What do you feed them? 1 and 2 are manageable. A few centuries of selective breeding and I'm sure you'll have a…

Can this new probiotic reduce lactose intolerance?

· 9 comments · 900 words · Viewed ~300 times


A small pharmaceutical bottle. It easily fits in my hand.

I ordered some pills off the Internet and swallowed them! What could possibly go wrong? Let's get one thing out of the way first. I am not a doctor. I don't even play one on TV. This blog post is not medical advice. (more…) …

Book Review: Pod - Laline Paull

· 200 words


Book cover showing a swirling mass of dolphins.

After reading Laline Paull's The Bees, I was eager to read her next work. The Bees was about Bees, obviously. Pod is about a pod of dolphins - and their oceanic friends and society. Weirdly, this is the third book I've read from the perspective of cetaceans. Both The Idiot Gods and Startide Rising deal with similar themes - how to represent the complex world of sea creatures into sometime…