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🇺🇦 Ingvar Stepanyan

@rreverser.com

2.8K followers 880 following 3K posts

Sr. Principal Engineer at Cloudflare by day, WebAssembly consultant by night. You might also know me from my work on OSS tools and libraries (JS / Wasm / Rust) or Wasm DevRel at Google Chrome 📝 https://rreverser.com/ 📷 https://instagram.com/rreverser

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🇺🇦 Ingvar Stepanyan @rreverser.com · Jan 9

> walking through marrakech at night
> some guy comes up and asks if I want hash
> I ask if it's a cryptographic hash
> he doesn't understand
> I show him the NIST definition
> he laughs and says "it's a good hash"
[...]
> it's not a cryptographic hash

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🇺🇦 Ingvar Stepanyan @rreverser.com · 8h

Sometimes "referenced by" section of a foundational paper is pure gold.

Tomato quality assessment, star maps, battery defects, ... - you'd think all of these topics can't possibly have anything in common, and yet.

Cano-Lara MRostro-Gonzalez H(2024)Tomato quality assessment and enhancement through Fuzzy Logic: A ripe perspective on precision agriculturePostharvest Biology and Technology10.1016/j.postharvbio.2024.112875212Online publication date: Jun-2024
https://doi.org/10.1016/j.postharvbio.2024.112875
Thompson J(2024)Iterative smoothing for change-point regression function estimationJournal of Applied Statistics10.1080/02664763.2024.235275951:163431-3455Online publication date: 21-May-2024
https://doi.org/10.1080/02664763.2024.2352759
Lu HJiang YGao Y(2024)A Denoising Algorithm of Star Map Based on Wavelet Transform and Double-Window Combined FilteringProceedings of 3rd 2023 International Conference on Autonomous Unmanned Systems (3rd ICAUS 2023)10.1007/978-981-97-1083-6_319-29Online publication date: 26-Apr-2024
https://doi.org/10.1007/978-981-97-1083-6_3
shiyu pWang ZShuai YDan H(2024)Weakly-supervised battery defect detection based on enhanced regions of interestFifteenth International Conference on Graphics and Image Processing (ICGIP 2023)10.1117/12.3020139Online publication date: 25-Mar-2024

🇺🇦 Ingvar Stepanyan @rreverser.com · 12h

And yet 😅

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🇺🇦 Ingvar Stepanyan @rreverser.com · 12h

No, only doing astrophotography as a hobby.

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🇺🇦 Ingvar Stepanyan @rreverser.com · 21h

It's just like iterator.next() 🥳

🇺🇦 Ingvar Stepanyan @rreverser.com · 22h

Impostor syndrome really be like: "hey, don't you feel bad that some of this professional astronomer's *raw* images look better than the ones you've spent hours postprocessing?"

Why, yes, now I do.

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🇺🇦 Ingvar Stepanyan @rreverser.com · 22h

Since it's Node.js, maybe rps? 😜

🇺🇦 Ingvar Stepanyan @rreverser.com · 1d

I'm everywhere.

Reposted by 🇺🇦 Ingvar Stepanyan

Ian Carrillo @iansociologo.bsky.social · 1d

One of the swimmers had used ChatGPT to consult the tide times: “I made the mistake of using ChatGPT for research to see when the low tide was."

uk.news.yahoo.com/restaurant-b...

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🇺🇦 Ingvar Stepanyan @rreverser.com · 2d

Overwhelmingly positive, right? Right?

🇺🇦 Ingvar Stepanyan @rreverser.com · 2d

And, while at it, let's make it even faster: github.com/qarmin/czkaw...

Use built-in JPEG in RAW for ~8x speedup by RReverser · Pull Request #1655 · qarmin/czkawka

Most raw images have a built-in full-sized pre-developed JPEG. We can use it to skip raw development altogether and speed up raw image hashing by roughly ~8x. Results from testing on a sample folde...

github.com

🇺🇦 Ingvar Stepanyan @rreverser.com · 2d

Wait till you hear about the books situation.

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🇺🇦 Ingvar Stepanyan @rreverser.com · 2d

Typical: you're just trying to use a tool, but then you run into an annoying issue it has and instead of ignoring, you just _have_ to go on a side quest to fix it.

At least this was fairly quick (left: release version, right: with my fix).

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🇺🇦 Ingvar Stepanyan @rreverser.com · 3d

There's more 😍

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🇺🇦 Ingvar Stepanyan @rreverser.com · 3d

Just for reference, these are from the image dataset kindly shared by Wei-Hao Wang. app.astrobin.com/i/mjhcd5

publicly release of astrophotographic raw files - AstroBin

This is not new, but I want to advertise this again because of some recent change of Google's policy. The old link no longer works well. Here is a new link from which everyone can directly download th...

app.astrobin.com

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🇺🇦 Ingvar Stepanyan @rreverser.com · 3d

50 stars? I agree!

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🇺🇦 Ingvar Stepanyan @rreverser.com · 3d

Lol looks like this astrophotography catalog has some unexpected superstar images.

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🇺🇦 Ingvar Stepanyan @rreverser.com · 3d

You do need to fiddle with settings a bit to get the right degree of similarity avoiding false positives, as different hashes are better for different kinds of images, but, once you got them right for your catalogue, it's blazing fast.

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🇺🇦 Ingvar Stepanyan @rreverser.com · 3d

I keep being amazed at just how fast Czkawka is (a duplicate finder written in Rust).

Comparing over 30,000 images by actual image similarity hashes in like... 20 seconds?! github.com/qarmin/czkawka

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🇺🇦 Ingvar Stepanyan @rreverser.com · 3d

Huh I guess some apps just crash when you present them with over 32768 images in one go.

Perfectly reasonable usecase, c'mon.

🇺🇦 Ingvar Stepanyan @rreverser.com · 3d

Ah from reading around, apparently they are just raising required level from B1 to B2 🤷‍♂️

🇺🇦 Ingvar Stepanyan @rreverser.com · 3d

I'm confused, from the description in follow up posts it sounds like the same IELTS English test level I had to pass to get work visa 10 years ago. What's new?

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🇺🇦 Ingvar Stepanyan @rreverser.com · 3d

Oh, testing my Rust alternative is the very reason I'm collecting those samples.

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🇺🇦 Ingvar Stepanyan @rreverser.com · 3d

Ah no it processed the 6th file and updated the estimate to 20 days 😬

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🇺🇦 Ingvar Stepanyan @rreverser.com · 3d

Managed to convert them to JPEG, filter out duplicates etc, and now just need to platesolve them all using established tooling as a reference for my tests.

At least that will take only... 4 DAYS?

🇺🇦 Ingvar Stepanyan @rreverser.com · 3d

Turns out, using DevTools + the new File System Access API to download shitload of files from Drive can be a lot easier, more flexible, and faster than official apps and APIs.

Got enough files to get me going now.