Viewing profile — fleabitdev

Experienced software developer, mostly looking for freelance work, but also happy to discuss full-time employment. Location: UK Remote: Yes Willing to relocate: No Resume/CV: By re…

Wikimedia Commons has this feature. Editors can manually bless certain combinations of traits as "subcategories". For example, https://commons.wikimedia.org/wiki/Category:Paintings…

Good catch - looks like it's a PNG image, with an alpha channel for the rounded corners, and a subtle gradient in the background. The gradient is rendered with dithering, to preven…

As I understand it, very small neural networks have already been incorporated into both VVC and AV2 for intra prediction. You're correct that this strategy is limited by decoding p…

JPEG XL achieves about half the bitrate of an equal-quality JPEG, even at lower quality levels. That's a real achievement, but the complexity cost is high; I'd estimate that JPEG X…

I only recently learned that JPEG and MPEG-1 were designed for near-lossless compression, so the massive bitrate reductions which came further down the road had nothing to do with …

Both formats are DCT-based (except for lossless JPEG XL). JPEG 2000's use of the DWT was unusual; in general, still-image lossy compression research has spent the last 35 years ite…

The discrete wavelet transform (DWT) compresses an image by repeatedly downscaling it, and storing the information which was lost during downscaling. Here's an image which has been…

I'd describe that as a trend, rather than a consensus. It wasn't an entirely bad idea, because comments carry a high maintenance cost. They usually need to be rewritten when nearby…

You've rediscovered a state-of-the-art technique, currently used by JPEG XL, AV1, and the HEVC range extensions. It's called "chroma from luma" or "cross-component prediction". Thi…

There was a constraint - since 2009, the Joint Photographic Experts Group had published JPEG XR, JPEG XT and JPEG XS, and they were probably reluctant to break that naming scheme. …

The rods are only active in low-light conditions; they're fully active under the moon and stars, or partially active under a dim street light. Under normal lighting conditions, eve…

Protanopia and protanomaly shift luminance perception away from the longest wavelengths of visible light, which causes highly-saturated red colours to appear dark or black. Deutera…

I'd be very interested in hearing alternative estimates, but here's my working: The lowest cost I could find to rent a server SSD was US$5 per TB-month, and it's often much higher.…

Isn't it a little reductive to look at basic infrastructure costs? I used Hetzner as a surrogate for the raw cost of bandwidth, plus overheads. If you need to serve data outside Eu…

In this case, the bug was 131 GB of wasted disk space after installation. Because the waste came from duplicate files, it should have had little impact on download size (unless the…

Back of the envelope, in the two years since the game was released, this single bug has wasted at least US$10,000,000 of hardware resources. That's a conservative estimate (20% of …