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/hobby/ - Hobby

"Our hands pass down the skills of the last generation to the next"
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people usually only think about format when compressing images

they never think about indexed coloring

consider. Same pic. same size. one only uses 24 colors and is only 435 kb. the other is 1.5mb and uses 254 colors. This isn't very significant because the photo is grayscale and doesn't use many colors in the first place. However…
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File: 1660384519122-1.pdf (16.8 MB, 153x255, inferno00dant_2.pdf)

File: 1660384519122-2.pdf (33.95 MB, 153x255, inferno00dant_2_jpg.pdf)

Popular image formats usually have very good compression. Compare this to scanned documents, where PDF has proliferated, despite DJVU having objectively better compression and faster rendering by a wide margin.
Look at this random book from archive.org (https://archive.org/details/inferno00dant_2/). The DJVU looks much clearer than the native PDF with more than double the size and the PDF containing JPEGs has marginally more detailed illustrations at four times the size. The text of the DJVU looks crisper than that of both PDFs.
Most books on archive.org don't have DJVUs anymore, so I usually losslessly convert a directory of JPEG2K files to a PDF and transcode it to DJVU with this script:
t=`mktemp`; d=`mktemp -d`
for i in $1/*.[Jj][Pp]2; do
  jpeg2ktopam $1|pamtotiff >$t &&
  tiff2pdf -o "$d/`basename $i|cut -d. -f 1`.pdf" $t
pdfunite $d/* $t &&
djvu2pdf $t > $2
rm $t; rm -r $d

This requires netpbm and pdf2djvu.


I just did it because I thought it looked cool lol, I had already made it before the thread. I like how jpeg improves in some spots until it suddenly goes downhill massively, although that's mostly because the image has a weird quality already. jpeg wins in compression but it doesn't give any aesthetics like dithering or color reduction.
Although .avif is probably the best


I think what would help with aesthetics more than anything is an AI step when compressing. Reducing colors often leads to objects blending into each other or the background. Fixing this by hand takes a small eternity, so AI finding the borders of objects to find a setting with a given reduction of colors with little blending would be good.

And AI should also do a bit of phony coloring (not taking the nearest color from the reduced set) if that helps a lot against blending.

Oh and also, the AI should distinguish between things like machines and buildings on the one hand and organic structures on the other and apply something like the Bayer dither to the former and a less orderly dither to the latter.


That's because dithering looks like shit and we have better displays now than we did in the 90s when color quantization was still a passable compression solution. But now we have jpeg.

Use jpeg instead and an encoder like mozjpeg for your Lenin portraits


Where did the meme of "Hollywood are prudes when it comes to nudity and sex because of their Puritan ancestors" come from? When in reality the Hays Code was created and enforced by Roman Catholics.


catholics are prudes too
it’s not like they’re fundamentally different


Who has ever called Hollyweird prudes lol
Burger film standards are what's prudish, and like you said they came from outside.




>Trumpcucks hate something therefore I must defend it
Off to reddit with you.


>"because of their Puritan ancestors"
People who thinks that have never heard of Pre-Code Hollywood or even the New Hollywood.
Of course if someones only know about Classic Hollywood and/or post-70's Hollywood, they might think Hollywood is puritan.

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Talk bout motivation, get hype. Achieve communist utopia 2022.


you gotta drink coffee



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Do you like planes?
Good. Post pictures of planes. Post interesting stuff about planes. Discuss Post Soviet planes. Post Post Soviet Planes, discuss American, British, Chinese, Brazillian, Canadian, Spanish, Japanese, Indonesian, Australian or anywhere else that makes planes planes. Post military planes, post civilian planes, WW2 planes, 60s planes, contemporary planes. Post air battles, post trip reports, If you are feeling daring, even go so far as to post helicopters. Post cockpits, post passenger cabins, post timetables, post airports, post liveries, post about airlines that exist and that no longer exist. If it's plane related, I want to see it.

And most importantly:
Post your favorite plane.
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Yeah but you can't just put something in a museum and be like 'hey this is BETTER than the original historical item'.

Well okay, you can, but it's not as good.


what's the best airline livery and why was it British Airways Landor?


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Is it necessary to crouch or duck when entering a live helicopter?
If you don't want to become like pic 1 rel, you damn better do so.
Even with larger helicopters where the rotor disc SHOULD be well overhead, certain conditions such as wind or holding position on a slope can cause the rotor disc to have a substantial tilt, bringing the blades MUCH closer to the ground than you would think.

Approach ONLY when and from the direction signaled by the pilot (who is the only one who knows what control inputs he is making, and thus where the blades will be.) With rotors, props, and jet wash, you usually only get one mistake so caution is indicated.

There’s this idea that the blades will cut your head off, but they are blunt objects and just whack it off with sheer brute force. Pic 2 rel. People forget that the helicopter blade is a “rotary wing” ie a spinning airfoil. Helicopters and gyroplanes are called “rotary wing aircraft”. The spinning blades actually behave as a solid round wing for aerodynamic purposes hence the term “rotor disc” and it is “tilted” to achieve control. The leading edge is the rounded blunt one. The “knife edge” is the trailing edge, ie NOT what hits you. As you note this is sheer blunt trauma… Transfer of kinetic energy - WHACK. The tilting is also the reason why it can be so dangerous to approach. Say you are holding level against a crosswind - you can have a pretty substantial tilt. Ditto for slopes. Pic 3 related.

If mods think pic1 is too graphic pls spoiler


Are you in the DC area?


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Virgin JetRanger and Chinook versus Chad Mi-26. It's the most based vertolet ever made.


Lads, I keep starting books and then skipping onto the next one. I can't complete anything, is this internet induced ADD?
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The posts ITT are awful, so I'll ignore them.

The answer is yes. If you had a slower expectation of reward, you'd be more patient and finish more books. And the internet is indeed fucking you up with that, but it can be fixed. Mediation helps too.


Ah yes. Blame TikTok for everything wrong.
The Internet is an overused factor in ADHD.

Also, alot ADHD is actually due to clinical over diagnosis wanting to sell more psych meds to kids instead of letting them run around in the play.
Our pediatric system views children as defective pets meant to be put down.


>Our pediatric system views children as defective pets meant to be put down.
Based and 100% true.


Sad but true


>Also, alot ADHD is actually due to clinical over diagnosis wanting to sell more psych meds to kids instead of letting them run around in the play.
fucking this, hell even in terms of pets, your og is going to be jittery and uncontrollable if you don't give them plenty of play time and a method of burning energy. Kids are the same, if you don't let them expend energy they're not going to behave very much.


>astronaut and cosmonaut in the same small moonbase
>both reflect on parenthood and bond
>emotional speech about there's enough of the moon for everyone, that the moon was declared for all mankind
>cosmonaut helps astronaut pull of far-flung stunt to save fellow americans
>part ways

>lol evil gommie man sabotages base

this show is so fucking good so far I just wish the soviets weren't the default bad guys just cuz they put a woman on the moon first or whatever


I like this show, not perfect ofc. What's interesting is that the Soviets straight up won the Cold War in this timeline. In the intro for S3 there were newsclippings about Gorby's economic miracle, all of South America is commie, China is commie (who knows what happened with the Sino-Soviet split).

Makes the US-based private space company as a 3rd power not really believable because how are they so rich without the success of American imperialism?


Oh, Mexico was commie. Can you imagine what type of US would allow that? They'd nuke the whole fucking world before that happened.


>Ronald D. Moore explained how history had been different in the series: "Sergei Korolev was the father of the Soviet space program; in our reality, he died during an operation in Moscow in the mid '60s. And after that point, their Moon program really never pulled together…. Our point of divergence was that Korolev lives, … and he made their Moon landing happen."
great man narrative moment


Annoyed with the redscare bullshit in this series. The Russians are just different charictures of Stalinism. I was reading Reddit comments and it rubs off on the fan base. Lot of "victims of communism" types talking about fascistic communism and a couple poor Russian libs wondering why their country/people are all being portrayed as savages.
Similar to OP situation, after the US crew rescued the Soviets, now there's some command tension with the Soviet commander being a dick. Like these things wouldn't have been cleared up before by political officials? It's just an opportunity for a Russian to look like an asshole.


Explain this, Jucheoids.

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 No.15840[Reply][Last 50 Posts]

Ask your /fit/ related questions here.

Beginner's Health and Fitness Guide, aka "the /fit/ sticky"

<Previous Thread

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so is that a no? i just chose a random pic


Tweaked my shoulder doing 20kg weighted dips. Got excited to hit the 20kg and went too hard.

Just a minor tweak, was only like half an hour ago so haven’t seen if it’s still there after a sleep. I know shoulders can be fragile so why do? Got bench programmed for Thursday and OhP for Friday, should I not do these?



New thread: >>26632


no. caloric deficit for 10 weeks and more protein, water and sleep.

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Dreamworks is about to release to the public teir animating tools. I I think a golden age of indie animations is among us.

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OpenMoonRay is just a renderer, Blender is a whole animation suite with multiple renderers.


People say this about Microsoft products all the time.


What does that mean for patents?


there's no patent because it doesn't do anything technologically unique. it uses publicly available algorithms and standards


How do you know that?


>The Human Face of Russia (1984) - everyday life in 1980s USSR

>1984 documentary on the USSR.


>Dock work is hard work, so it has a higher status in The Soviet Union. Higher status means higher pay and dock workers make more than an executive of a factory or a ship's captain.


A documentary thread on /hobby/ would be nice, maybe this one will do.


documentaries like these make me really sad knowing what happens later


Do Communists Have Better Sex? a documentary on the differences in sexual cultures that developed in East/West Germany during the Cold War.

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Any magazines like Jacobin I can read and what magazines you guys have?
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Too bad they paywall their old content


Chuang for a Chinese Communist Perspective


Qiao Collective for Dengist Views


aeon are sometimes good, but too often they are Postmodern Psychoanalysists and that's cringe


WSWS for Leftist News and Analysis. Pretty good, but Trotskyites, so make of that what you will

Post too long. Click here to view the full text.


Unitonically has better labor reporting than any other paper.

Also OP read Monthly Review.




Harpers is good for a lib magazine.

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