Show HN: I built an app that writes your life story https://ift.tt/JTkH7rU

Show HN: I built an app that writes your life story https://memoir-app.com May 19, 2024 at 07:37AM

Show HN: Locally run a "blue text" bot (llama3) https://ift.tt/f0OYc4V

Show HN: Locally run a "blue text" bot (llama3) https://ift.tt/dBx68i3 May 19, 2024 at 05:32AM

Show HN: Brawshot – Basic temporal denoise for videos in BRAW format https://ift.tt/0ymOPgL

Show HN: Brawshot – Basic temporal denoise for videos in BRAW format I wanted to record the aurora last weekend, but I only have a Blackmagic Design video camera which is clearly not made for this purpose. Recording a video of the night sky results in extreme noise to the point that you don't really see anything, so I wrote a tool to significantly reduce noise in such video recordings. Essentially it computes a moving average across video frames which significantly reduces the random sensor noise. This works because aurora changes very slowly, and it's roughly comparable to a long exposure time computed out of a video file where the individual frames have a very short exposure time. But unlike a photo camera with long exposure time, this produces a video at full frame rate again. The window size of the moving average has no influence on the computation time, so even large window sizes of e.g. 100 frames or more are no problem. If you want to use this tool for artistic purposes, it will produce extreme motion blur depending on the window size you choose. I am aware that tools like ffmpeg or the paid version of DaVinci Resolve have denoising features, but at least ffmpeg's denoising filters are extremely slow and memory intensive, and it's fun to implement this as fast GPU accelerated open source software for this non-standard use case anyway. To use this tool, you'll need a Blackmagic Design camera which records in BRAW format (or you could hack the video decoder in the main.cpp file to decode some other source video file format). If someone has a good idea how to remove the remaining noise pattern which seems to be inherent in the image sensor and very slowly changes over time, I'd be very interested! https://ift.tt/NPsnlQ8 May 18, 2024 at 12:47PM

Show HN: Digital player board for Terraforming Mars https://ift.tt/32D9lXg

Show HN: Digital player board for Terraforming Mars My cousin and I love the Terraforming Mars board game. But we'd often get overly excited and knock our pieces off of our boards, losing track of our progress. So I digitised it. It comes with a few cool features like resource conversions (e.g. converting plants to greenery), production phase, offline, mobile-friendly and keeps track of the history using the browser history itself. Sharing this here in case there are any other TM fans that could also find some use in this :) https://ift.tt/ouBzjis May 19, 2024 at 02:00AM

Show HN: Solafans MPPT Charger Data Query and Home Assistant Integration https://ift.tt/RCy7Qw3

Show HN: Solafans MPPT Charger Data Query and Home Assistant Integration https://ift.tt/yJ3vChT May 18, 2024 at 07:53AM

Show HN: A Golang CP/M emulator https://ift.tt/IGPkAn4

Show HN: A Golang CP/M emulator https://ift.tt/Xk5uUE7 May 18, 2024 at 07:48AM

Show HN: I built an Android app to find, explore, and download movies https://ift.tt/Dlr2GeL

Show HN: I built an Android app to find, explore, and download movies https://ift.tt/rB9qFSH May 17, 2024 at 10:33PM