jb

Awesome, I appreciate the pointers - some stuff to look into - was looking at stuff about macro focus stacking a few months ago, tangentially related...

With a ray tracer, yeah, it's just combining a lot of samples of random incoming light, from a known camera position... this seems very similar

Oh, I guess this process of extended capture of images through a telescope - you're using software I'd never heard of before. Trying to piece together an understanding of people's general approaches so I can try to improve on my existing setup of essentially just "bulb mode" on a camera

It's also fascinating with the timescales involved, you can potentially correlate all this night-to-night, too... sorry for all the questions, etc, topic is new to me and quite exciting

Something else I was thinking about... I've done an approach with a single, long exposure on my camera, but yeah, here it almost seems like video/many short exposures is more what you want, and combine many samples of that information in software, you can filter transient objects and things maybe...

I'm curious to hear any thoughts, if you've used them - what's that device like, the specialized astrophoto sensors? I'm assuming it's going to give you some kind of access to raw sensor data, and some cooling and stuff to help reduce noise from heat... not sure. Maybe integration for tracking?

I'm really curious, I sent the guy an email - he's got a compatibility matrix of the astrophoto sensors, I'm wondering if I can figure out a way to do some of this stuff with video out from a handheld camera, I've got a fuji x-h2, and it will give at least some form of HDR video out...

as far as maintaining tracking, I think it may actually bear a certain resemblance to some missile guidance systems, keeping the brightest point at the center of the crosshairs...

I'm very interested in the approaches used for this, because it seems like it's closely related to multi sample off-line rendering in computer graphics, how the data is combined into an image... I have done some very rudimentary stuff with a camera on a tripod, will look into what Firecapture does

夜の赤崁楼 192 付近

#art #photo #photography #nightphotography #alley #streetsnap #Tainan #EastCoastKin
©️skinskin

Behold the Eastern Veil Nebula, a haunting supernova remnant that lit up the skies over 10,000 years ago!

It took a month to capture using our little amateur telescope under the clear Texas skies.

This is also Decembers shot in my 2026 calendar (link in my bio)

A screenshot of a multimedia CD-ROM menu section splash screen with a guy in a leotard sitting on a mid-90s big-box PC tower, looking like he's straining to lift up barbells with pc crt monitors in the place of weights. Text on the right details there's ultilities on CD to rune up your system, 100MB worth!

Shape Up Your System in '97 with UTILITIES. 💪💽

💿: Boot Disc 6, Feb 1997

sprinkle in some goto's and it's off to the races

it can be kind of fun to use them for things like optional steps of a process, but yeah overall they do have some easy pitfalls that are tricky to catch

Sculpture of stylised vividly coloured plant with spotty blossoms sited in a gallery space

Yayoi Kusama, Flowers That Bloom at Midnight, 2009 #WomensArt

Major Update to vk_gaussian_splatting sample by Jean-Eudes Marvie
-Unscented transforms allow proper fisheye effect
-SPZ file format support
And more

#vulkan #3dgs

github.com/nvpro-sample...

but I think that is the general pitch, that this shared context creates an illusion of some form of community... it seems destructive to lure people in with the implication that you can find a much more receptive peer group online, that ends up being completely cut off from organic human interaction

conversation with my sister earlier, I think it maybe more useful to think of it more like other "media" outlets, because it's only the appearance of participating in a community and nothing really "social" is involved... if someone is a meaningful connection, you'd have other ways to contact them

St.stephen's college hong kong r/brutalism

GitHub - nvpro-samples/vk_raytracing_tutorial_KHR at v2 Ray tracing examples and tutorials using VK_KHR_ray_tracing - GitHub - nvpro-samples/vk_raytracing_tutorial_KHR at v2

Vulkan Ray Tracing Tutorial V2.0 Released

Complete rewrite with Vulkan 1.4 support, VMA, Slang. Step-by-step tutorial from raster to ray tracing.
15+ specialized tutorials.
Get started: github.com/nvpro-sample...
#Vulkan #RayTracing #GraphicsProgramming

human coccyx nearly disappears, it's kind of interesting comparison to things with more pronounced tails

that's interesting, a lot of bipedal dinosaurs and things seem to have a lot of mass behind the hips, like your drawing, I wonder if that's just vestigial from developing from something that didn't start with meaningful limbs, or they played a different role in prior development before becoming legs

thought about this again after seeing a chipmunk running this morning - does the tail develop as a counterweight to the forebody in these kind of bipedal arrangements? chipmunk raises it, wondered if it's like basically a dynamic counterweight to help with balance, significant portion of bodyweight

7. How to write consistently boring scientific literature.

“Hell – is sitting on a hot stone reading your own scientific publications”
Erik Ursin, fish biologist

Thanks @fattebertj.bsky.social

Open Access
nsojournals.onlinelibrary.wiley.com/doi/epdf/10....

Couple pieces about this work -

about the sphere packing, using voxel "dart throwing" on the GPU:
jbaker.graphics/writings/sph...

about the reuse of the data structure from the sphere packing, reinterpreting it as a grid-based raytracing acceleration structure:
jbaker.graphics/writings/dda...

New blog post! In "Billions of triangles in minutes" we'll walk through hierarchical cluster level of detail generation of, well, billions of triangles in minutes. Reposts welcome!

zeux.io/2025/09/30/b...

pathtraced arrangement of sapphire blue spheres, with emissive SDF geometry inside, multiply scattering to create hazy lighting in the interior (rendered with Daedalus)

Pic is looking up between a building and the Tribute in Lights on 9/11 this year

Space, the final frontier
#WeekNforNights #AlphabetChallenge
#WindowWednesday #WindowsOnWednesday
#WackyWednesday #WackyWednesdayArt
#EastCoastKin #Photography #NYCPhotography
(see Alt text for actual pic info)

rendering caustics 3 times for the RGB channels is 3 times as expensive, so rendering it for a continuous spectrum of colors *would* be veeery expensive if we stuck to this method. instead, I render stretched/anisotropic photons and map the entire spectrum onto them.

(very old buggy scuffed WIPs)

pathtraced sphere packing arrangements