Top posts

Every blog post that took off on Hacker News, ranked by the votes of its best submission. 14,540 posts.

Software Engineering
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4445

Parallel Seam Carving

Seam carving is a technique for content-aware resizing, which changes the size of an image while attempting to preserve the interesting content of the image. The basic idea behind the technique is to remove low-energy seams: paths of pixels that are similar to their surroundings. A removed seam can be either vertical…

4456

ZX Spectrum Raytracer

I love raytracers; in fact I’ve written half a book about them. Probably less known is my love for the ZX Spectrum , the 1982 home computer I grew up with, and which started my interest in graphics and programming. This machine is so ridiculously underpowered for today’s standards (and even for 1980s standards), the…

4469

Opus 1.3 Released

Ever since version 1.1, Opus has been able to automatically detect whether its input is speech or music, and choose the optimal encoding mode accordingly. The original speech/music detector was based on a simple (non-recurrent) neural network, followed by an HMM-based layer to combine the neural network results over…