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US SEC Chair Paul Atkins says blockchains could enable novel securities use cases and "policymaking will no longer result from ad hoc enforcement actions" (Christopher Tepedino/Cointelegraph)

cointelegraph.com/news/sec-cha…
techmeme.com/250512/p34#a25051…



A Single-Pixel Camera Without Moving Parts Using Compressed Sensing



One of the reconstructed images, using all 4,096 matrix patterns as input, next to the original object. (Credit: okooptics, Jon Bumstead)One of the reconstructed images, using all 4,096 matrix patterns as input, next to the original object. (Credit: okooptics, Jon Bumstead)
There’s a strange allure to single-pixel cameras due to the simultaneous simplicity and yet fascinating features that they can offer, such as no set resolution limit. That said, the typical implementations that use some kind of scanning (MEMS) mirror or similar approach suffer from various issues even when you’re photographing a perfectly stationary and static scene due to their complex mechanical nature. Yet there’s a way around this, involving a LED matrix and a single photoresistor, as covered by [Jon Bumstead] in an article with accompanying video.

As he points out, this isn’t a new concept, with research papers cited that go back many years. At the core lies the signal processing technique called compressed sensing, which is incidentally also used with computed tomography (CT) and magnetic resonance imaging (MRI) scanners. Compressed sensing enables the reconstruction of a signal from a series of samples, by using existing knowledge of the signal.

In the case of this single-pixel camera, the known information is the illumination, which is a Hadamard matrix pattern displayed on the 64 x 64 pixel LED matrix, ergo 4,096 possible patterns. A total of 4,096 samples are thus recorded, which are subsequently processed with a Matlab script. As pointed out, even 50% of the maximum possible matrices can suffice here, with appropriately chosen patterns.

While not an incredibly fast method, it is fully solid-state, can be adapted to use other wavelengths, and with some tweaking of the used components probably could cut down the sampling time required.

youtube.com/embed/EE9AETSoPHw?…


hackaday.com/2025/05/12/a-sing…




Partial panorama assembled from overlapping navigation camera images after a drive of 18.6 meters (61 ft) during mission sol 4537 (May 11, 2025), also attached is a screen capture of the traverse map (with scale), and the drive details / stats. Credits: NASA/JPL-Caltech/UofA.

#Curiosity #MSL #MarsRover #NASA #Science #Space #Exploration #Solarocks #Mars #Blog #Map #Data




We've improved how we direct connections to GrapheneOS servers by using anycast to fill in missing GeoIP data. This should reduce service latency and improve download bandwidth for many users in the western US and especially with certain VPN providers.

github.com/GrapheneOS/ns1.grap…

Anomaly ☑️ reshared this.

in reply to GrapheneOS

Here's an example of how we use anycast to send traffic to the nearest nameserver:

ping.pe/ns1.grapheneos.org

This shows how we respond with an IP address based on GeoIP + anycast node:

dig.ping.pe/grapheneos.org:A:n…

With these examples, only 1 is off (UK server geolocated in US).

in reply to GrapheneOS

You can compare those to see that does a great job:

ping.pe/51.222.156.101
ping.pe/209.141.35.164
ping.pe/54.37.41.188
ping.pe/51.79.160.50

Note ping.pe looks up a domain name in 1 location, then pings it everywhere, so it's misleading for a domain.

in reply to GrapheneOS

Improving update download speed is the biggest benefit. One of the network services we provide to GrapheneOS users is secure network time where low latency improves accuracy. See grapheneos.org/faq#default-con…, grapheneos.org/faq#other-conne… and grapheneos.org/features#networ… for the other services.
in reply to GrapheneOS

The way we've set up our server infrastructure means that any single provider having downtime won't take down our website, updates or network services. We can scale it up across providers instead of a specific one. It's also extremely cost effective to save money for development.
in reply to GrapheneOS

Please add alternative options for timekeeping, as it is critical for Internet access and TOTP. If ever grapheneos's servers have issues, there is no easy way to get accurate time.
Unknown parent

mastodon - Collegamento all'originale
GrapheneOS

@kurtz We improved it for everyone around the world. We're only saying that the biggest improvement is for the western US. That's because directing traffic with GeoDNS in the US to each coast relies on GeoIP data having a state but it often only has a country. We use the free GeoLite2 database from MaxMind instead of their paid GeoIP2 database with more city/state data.

It also helps with VPN providers using servers without GeoIP data available. Server provider GeoIP is worse than residential.



title: Unidentified Man
artist: Mathew Brady Studio, active 1844 - 1894
source: National Portrait Gallery
notes: The Frederick Hill Meserve Collection comprises more than five thousand […]
#Art #Design #Museum #Gallery #MastodonArt #MastoArt #Culture #Random
npg.si.edu/object/npg_NPG.81.M…


BBC News - Poland says it has evidence Russia was behind huge 2024 shopping centre fire - BBC News
bbc.co.uk/news/videos/ceqgxv7e…


Apple discontinuing support for older Home architecture with iOS 19 - appleinsider.com/articles/25/0…

The original Apple Home architecture will officially lose support with the release of iOS 19, and users are already being encouraged to update ahead of the discontinuation.

#mbw

#MBW


"The sinkhole that is Trump’s economy might have one unanticipated upside — so unexpected, that even MAGA supporters might not realize they’re achieving it," Jasmine M. Green writes in Today's Opinions. wapo.st/4dhlumb


#3088 Deposition

Sensitive content

in reply to XKCD Bot

#3088 Deposition

Sensitive content



RFK Jr. Is Wrong. Trump Is for the Oligarchs. youtube.com/watch?v=1J7CHRRBnG…

Tim Chambers reshared this.


in reply to Amber

I had to explain to one of my cousins what a CD is once (she had never seen one)


Monday.com reports strong Q1 2025 results, exceeding Wall Street expectatio... - published 12 May 2025 #WallStreet #Business #Tech #Technology #Nasdaq
grafa.com/news/technology-mond…


Music mogul Sean 'Diddy' Combs faces 15 years in prison if convicted as trial begins in New York
https://www.euronews.com/2025/05/13/music-mogul-sean-diddy-combs-faces-15-years-in-prison-if-convicted-as-trial-begins-in-new-?utm_source=flipboard&utm_medium=activitypub

Posted into Europe News @europe-news-euronews



SQL-tString

SQL-tString allows for f-string like construction of sql queries.

github.com/pgjones/sql-tstring


in reply to velzie

The image shows a screenshot of a social media post. The post is from a user with the handle "[@]janeremover" and includes two tweets. The first tweet reads "Too many white people" and has 26 comments, 64 retweets, and 310 likes, with 1.9K impressions. The second tweet is a reply to the first, simply stating "[@]janeremover." Below the tweets, there is a section labeled "Fans" with a timestamp of "2:24 PM · 5/10/25" and 263 views. The post has 1 comment, 59 likes, and 1 bookmark. The background of the screenshot is black, and the text is in white and pink.

Provided by @altbot, generated privately and locally using Ovis2-8B

🌱 Energy used: 0.176 Wh



I made a playlist of hundreds of classical music pieces that are all my very favorites!

youtube.com/playlist?list=PLEJ…

#music #classicalmusic @classicalmusic



Time flies..

This was shot in an old reconverted Nazi submarine base, this space is difficult in many ways, nearly undestructible given the amount of concrete, at least this stain of history serves a better purpose now.

#photography #history #Expo #LePetitPrince #lightshow

Questa voce è stata modificata (6 mesi fa)


Fox Business Correspondent Spots Why Trump Was 'Forced To Back Off' On China Tariffs
https://www.huffpost.com/entry/fox-business-network-charles-gasparino-trump-china-tariffs_n_6822799de4b04d30c1c9d68f?utm_source=flipboard&utm_medium=activitypub

Posted into News & Politics @news-politics-huffingtonpost






Armbian Updates Add OMV Support, Boot Improvements, and Rockchip Optimizations lxer.com/module/newswire/ext_l…




One of the participants at GodotCon Boston has a nice write up of attending the conference and other side events:

itch.io/blog/941196/godotcon-b…


in reply to Tim Chambers

it's not the point, but this art style is unassumingly gorgeous!





Journalist killed in attack on hospital in southern Gaza

Journalist Hassan Eslaih was killed in Israeli bombardment of the burns department at Nasser Medical Complex, in Khan Younis.

Eslaih was among several people injured last month in an attack on a media tent outside the hospital.

@palestine
#Gaza
#hospitals
#journalists
#news

Questa voce è stata modificata (6 mesi fa)