black and white illustration, part of a surgical series of the Ross procedure. the main illustration shows a heart with venous and aortic canulae and the aortic is divided showing a calcified aortic valve. the inset is of forceps retracting the divided pulmonary trunk to show a healthy pulmonary valve.

black and white illustration part of a series on pancreas preserving duodenectomy. the gallbladder, part of the liver, part of the stomach, gastric artery, pancreas, and duodenum are visible. the duodenum wall is cut away to show precancerous growth in the lumen and the ampulla of Vater

black and white illustration showing the surgical scene for a nephrectomy and thrombectomy to treat renal cell carcinoma. the chest and abdomen have a long incision to expose the heart down to the right kidney with the liver and other organs retracted. the kidney is enlarged and the inferior vena cava is enlarged and cut open to show a large thrombus that extends superiorly into the right atrium, which is also cut open to visualize the clot.

black and white surgical series of an aortic arch aneurysm repair. the main illustration is of the surgical scene with a clam shell thoracotomy to expose the heart, lung, and aortic arch. the bottom left inset shows the aortic arch having been excised and a graft in process of being sutured in place and the bottom right inset shows the final graft repair.

Hi #portfolioday !

I'm Megan Llewellyn and I'm a freelance medical illustrator available for new work! I specialize in highly detailed surgical scenes, and I have a lot of experience in drawing pathology, anomalous anatomy, and novel procedures.

✉️ m.rose.llewellyn@gmail.com
🫀 meganllewellyn.com

pathtraced fractals in Daedalus

the 2nd part of my dithering visual article is finally out!

🔗 visualrambling.space/dithering-pa...

this one mainly explores the threshold map and how it generates those unique visual patterns

hope you enjoy this as much as I enjoyed making it!

made with #threejs & #animejs

little writeup on using simple markov chains for this kind of thing jbaker.graphics/writings/mar...

And one of my very first works in the PSX low-poly style. As for me, this is the simplest direction of 3D model design, but also the most interesting)

skfb.ly/oT6Wp

example gaboronoi

Assuming uniform weights and frequencies, and random colors and anisotropy directions, this is what an example gaboronoi diagram would look like.

makes sense - it's a nice bit of ergonomics though, skips a lot of config stuff in userspace

awesome, thanks for sharing

I don't think so, but not sure specifically what extensions they are referring to

not sure, but I'd be curious to see. I think it's really reasonable to think they would have a fast path because of the problem statement, pixel coords -> normalized texcoords -> sampling

vkCmdBlitImage2 is an extremely cool feature - if there is not a 1:1 pixel correspondence between src and dst, it actually uses the texture hardware to do a copy. Really interesting mix of high and low level feature, would typically have to write a little shader to do this.

Speechless, jaw-dropping displays tonight. Fairbanks, Alaska. iPhone photos.

I was doing this with pretty rudimentary CDF sampling recently, just precomputing PDF->CDF->a LUT of the iCDF. monotonicity seems like it fits, depends on the resolution you need. inversion method gives you a 1D LUT in terms of x, maps to a given range on y.

this looks incredible - yes, the pupil sampling. I have read that chapter, I need to do an implementation. that UI is so cool

GitHub - zpelgrims/lentil: Polynomial optics to Arnold. Camera shader with high-order aberrations, including bidirectional filter that adaptively samples out-of-focus highlights (top level repo) Polynomial optics to Arnold. Camera shader with high-order aberrations, including bidirectional filter that adaptively samples out-of-focus highlights (top level repo) - zpelgrims/lentil

ah - helps to look I suppose, neat
github.com/zpelgrims/le...

is this data available somewhere? the lentil page got taken down, but I don't think they had it accessible (maybe I didn't know where to look), I am curious to figure out the aperture sampling

An interactive digital magazine in 320x200 pixels.
Never published - but this was a proposed design for a Commodore 64 magazine.

#ux #digital #design #8bit

"subsidy" is a word

the gibson

very cool - can you still source aerochrome?

some sync issues with styling between mobile and desktop. maybe just chronological or something but would like clearer semantics on how that gets overridden

Ever seen one of these, and wondered *why* they work? 🧵

This is a so-called Bitonic sorting network, and the illustrations show the two common ways to implement them. From an implementation point of view the two methods are effectively the same, so which one you pick just comes down to preference.

messing with the tree generator in chorizo - runs obnoxiously fast on the 5090

converted 3D physarum from DDA traversal to delta tracking and seeing a roughly 2x speedup in the worst case when there is a lot of scattering

A strand based hair simulation running on GPU YouTube video by Jorrit Rouwe

A sneak peak of what I've been working on: A strand based hair system for Jolt Physics (WIP): youtu.be/Rl19G0c003o

Good idea using gaussians for tiled floor vegetation:
yunfan.zone/gswt_webpage/ #3dgs #gamedev #rendering

this is something I came across in the xRite literature. The qualitative saturation difference actually corresponds to the emission between the two illuminants - xenon has more wideband activity, and so it is "less saturated".

Time for more Menu Cube posting 😌

wireframe skeleton head, viewed sideways in a small window, and diagonally to the front in a larger window, in a program called digibot.

magazine screenshot (1993) archive.org/details/BYTE...