- Standalone line scan camera hardware: <a href="https://daniel.lawrence.lu/blog/2026-06-12-standalone-cnc-line-scan-camera/" rel="nofollow">https://daniel.lawrence.lu/blog/2026-06-12-standalone-cnc-li...
- Line scan camera image processing 2: <a href="https://daniel.lawrence.lu/blog/2026-08-02-line-scan-camera-image-processing-part-2/" rel="nofollow">https://daniel.lawrence.lu/blog/2026-08-02-line-scan-camera-...
I have a long-standing dream to use a line scan camera from a moving train, assuming everything would be easy, if I had the camera. Little did I realise how much work is needed to tidy up the imagery!
Your work is extremely beautiful, and I am truly envious of your work, the aesthetic is awesome. I want to do it on the cheap though, with a regular phone as camera.
I think you have given me the directions needed to make some bold steps towards getting what I want out of the 'medium'.
It converts a regular video into a line scan style photo. It works by stitching together small chunks rather than 1px thin slices, so the background has a repetitive texture rather than being smooth horizontal stripes. But at lower resolutions, it looks similar, especially if you pick a spot with a clean background. Also the trains turn out very detailed.
Example work by Kakeyama from Japan using this: <a href="https://kakeyama.fan.coocan.jp/tec/e5e8r.htm" rel="nofollow">https://kakeyama.fan.coocan.jp/tec/e5e8r.htm
Have you seen <a href="https://philo.gay/linecam/" rel="nofollow">https://philo.gay/linecam/ and <a href="https://github.com/FlamingSpork/grindstone" rel="nofollow">https://github.com/FlamingSpork/grindstone for the postprocessing code?
(previously on HN frontpage, and before that, at EMF Camp!)
I actually reached out to Philo on GitHub Issues but she hasn't responded yet [1]. I also mentioned her cool camera on my blog [2].
By the way, I recognize your username as the person that Philo credits with "rewriting grindstone in idiomatic NumPy". That's super cool!
Looks like a realm of 'I bit off more than I can chew' when it comes to results. Good to see OpenSeadragon in the wild on Flaming Spork's site (for prsenting images). It is a rarely ploughed furrow of artistic endeavour, and I suspect that is for good reason (of difficulty).
My plan was to experiment on the canal towpath with bicycle and basic android phone. I think I need a proper camera and the train.
dllu · · focus · HN ↗
- Line scan camera image processing: <a href="https://daniel.lawrence.lu/blog/2025-09-21-line-scan-camera-image-processing/" rel="nofollow">https://daniel.lawrence.lu/blog/2025-09-21-line-scan-camera-... Previous discussions:
- Standalone line scan camera hardware: <a href="https://daniel.lawrence.lu/blog/2026-06-12-standalone-cnc-line-scan-camera/" rel="nofollow">https://daniel.lawrence.lu/blog/2026-06-12-standalone-cnc-li...- Line scan camera image processing 2: <a href="https://daniel.lawrence.lu/blog/2026-08-02-line-scan-camera-image-processing-part-2/" rel="nofollow">https://daniel.lawrence.lu/blog/2026-08-02-line-scan-camera-...
Theodores · · focus · HN ↗
Your work is extremely beautiful, and I am truly envious of your work, the aesthetic is awesome. I want to do it on the cheap though, with a regular phone as camera.
I think you have given me the directions needed to make some bold steps towards getting what I want out of the 'medium'.
dllu · · focus · HN ↗
<a href="https://github.com/vitroid/TrainScanner" rel="nofollow">https://github.com/vitroid/TrainScanner
It converts a regular video into a line scan style photo. It works by stitching together small chunks rather than 1px thin slices, so the background has a repetitive texture rather than being smooth horizontal stripes. But at lower resolutions, it looks similar, especially if you pick a spot with a clean background. Also the trains turn out very detailed.
Example work by Kakeyama from Japan using this: <a href="https://kakeyama.fan.coocan.jp/tec/e5e8r.htm" rel="nofollow">https://kakeyama.fan.coocan.jp/tec/e5e8r.htm
Theodores · · focus · HN ↗
maddie0 · · focus · HN ↗
(previously on HN frontpage, and before that, at EMF Camp!)
dllu · · focus · HN ↗
By the way, I recognize your username as the person that Philo credits with "rewriting grindstone in idiomatic NumPy". That's super cool!
[1] <a href="https://github.com/FlamingSpork/grindstone/issues/1" rel="nofollow">https://github.com/FlamingSpork/grindstone/issues/1
[2] <a href="https://daniel.lawrence.lu/blog/2026-06-12-standalone-cnc-line-scan-camera/#s3.3" rel="nofollow">https://daniel.lawrence.lu/blog/2026-06-12-standalone-cnc-li...
Theodores · · focus · HN ↗
My plan was to experiment on the canal towpath with bicycle and basic android phone. I think I need a proper camera and the train.