picsort.coolapso.sh• Nov 1, 2025• 1 min read
Show HN: I built a tool to sort a Northern Lights dataset for a CV modelHi HN,I live in the Arctic Circle, where the Northern Lights are frequently visible. I set up a 24/7 live stream of the sky, both as an early warning system for when the aurora is active and to share the view with everyone.As part of this project, I wanted to hook a computer vision model to the video feed to automatically detect auroral activity and send notifications. I quickly ran into two problems:1. There were no pre-trained models for this, which meant I had to train my own. 2. Training a model requires a large, well-organized dataset. Getting the dataset right involves frequent sorting, tweaking, and updating thousands of images.I tried to manage my images with traditional file explorers, Darktable, and many other tools, but none of them felt efficient enough for the task. This led me down a bit of a yak-shaving journey, and Picsort was born.Picsort is a keyboard-first desktop app (with Vim-like HJKL navigation) designed to do one thing: rapidly sort large batches of images into