Rasmus Have

@rhave
419 Followers
937 Following
473 Posts
Infosec, network monitoring, and cyber cyber cyber :D Father of two. Previous founder of one (exited).
WorkTBA
Gitlabhttps://gitlab.com/rhave
Githubhttps://github.com/rhave

I just made a heatmap to visualize the number of iterations required for the quintic polynomial root solving algorithm to converge to the roots (not Newton, but something in that spirit).

It is fascinating!

#Visualization #math

Your job.

Test renderings from an algorithm I wrote to generate mosaics. It came from being unhappy seeing image mosaics that are just pixelations - real roman mosaics used the Opus Vermiculatum style https://en.wikipedia.org/wiki/Opus_vermiculatum , tiling along edges. Roughly, this calculates the best candidate edge points using the Sobel operator, places pairs of light/dark tiles there (slow), then grows remaining tiles from those (fast) using the underlying image colour from the square centres, while trying not to overlap entirely. #creativecoding #generative

Original images from Wikimedia Commons.

@anderspuck talks about drone wars, air force and developing strategy. Wests air forces might be in need of change.

https://www.youtube.com/watch?v=dg_HQL3GBcY

Fighter jets and the drone revolution

YouTube
contributed a few things to OSM and I could definitely see this becoming a new ADHD obsession. it's like Pokemon Go except instead of compressing creatures into prison-balls you find and document missing infrastructural details.
Thinking about the Leonardo da Vinci doodle page of 27 cats and 1 dragon
You have 2 weeks to get your talk proposals into the @pancakescon and @ComfyConAU CFPs for out epic virtual megacon on September 21st! Don't miss out! https://forms.gle/z1KvSPU7eJzHJHSo9 #cfp #cybersecurity #infosec
PancakesCon 6: Family Brunch - CFP

PancakesCon is a cybersecurity conference that will be conducted all day on 9/21/2025 (US Central Time). This conference is 100% virtual, not for profit and free to stream. **PancakesCon has a UNIQUE FORMAT. Please read these instructions carefully**: All PancakesCon talks must be 40-45 minutes long. They ****MUST**** consist of two parts: A brief talk about any cybersecurity topic targeted at junior professionals / students, and a brief talk about something which is not IT-related. The non-IT topics can cover anything from hobbies to fitness, cooking to music. Share something you're passionate about aside from computer technology or cybersecurity! Most people gave their talks in two separate halves at previous conferences with a clear transition, but you're welcome to combine the topics if you're feeling really creative! See examples on our YouTube. Example: "Active Directory Enumeration and Ballet Dance" CFP will close on Saturday, August 9, 2025 at 8:30PM US Central Time. CFP Notifications will go out on August 23 from hacks4pancakes at gmail (please make sure you allow this email). While we focus on diversity across all aspects of PancakesCon, our CFP review is blind. Please *do not include your name or any extremely identifying information* in your synopsis or we WILL disqualify you. ----------------------------- *Code of Conduct*: - PancakesCon is intended for a PG-13 audience. Please keep conversations and talks appropriate for young people (e.g. talks about making alcoholic drinks or medieval weapons are fine, but please be mindful of young people in talks and conversations) - PancakesCon talks and chat are moderated, and we have a zero tolerance policy on abuse, hate speech, and harassment. Violators will be removed from PancakesCon platforms and potentially barred from future events. Please contact a moderator in Slack immediately with any concerns.

Google Docs

This is an outstanding pic of the elusive Elves captured by Valter Binotto in Possagno, Italy, on March 27, 2023.

ELVES is a whimsical acronym for emissions of light and very Low frequency perturbations due to electromagnetic pulse sources.

Elves often appear as a dim, flattened, expanding glow ~400 km wide that lasts for ~1 millisecond. They occur in the ionosphere ~100 km above the ground over thunderstorms.

https://www.instagram.com/p/CqpwfZct3Lg/
https://en.wikipedia.org/wiki/Upper-atmospheric_lightning
Credit: Valter Binotto
5/n

Wednesday, it's Captain!
(No »AI«-Slop.)

[Edit] I would like to give credit to @Scmbradley for the original idea, published as a text-only-toot.

#noaislop #Kvadraat #wednesday #tintin #haddock

I often crop my photos in an effort to make them more abstract/composed/whatever but that means I sometimes can't even remember what it was a photo of to begin with.

I started looking through uncropped versions of photos and thought it was interesting to see how they started and how they ended up, so I figured I'd share some examples.

These are all color to black and white because they show the biggest difference from start to finish.