Confessions of a researchaholic

May 14, 2022

White cheddar rice and corn puffs

Filed under: Real — liyiwei @ 6:31 pm
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I don’t like this drawing as the contrasts on the puffs are not strong enough to convey their shapes, but here it is.

May 11, 2022

Squeezed toothpaste tube

Filed under: Real — liyiwei @ 9:48 pm
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I was trying to throw away this toothpaste tube after it couldn’t be further squeezed any more before spotting it as an interesting drawing subject.

May 7, 2022

If you can’t draw it simply, you don’t see it well enough.

Filed under: Real — liyiwei @ 10:45 am
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The traditional way to render a realistic image is from a physics perspective: provide a complete enough description of the scene and simulate light propagation and image formation with sufficient accuracy.
The end goal of physical realism can facilitate the understanding of the physical universe, at the expense of costly computation.
Thus, computer graphics research has been mainly about how to hack this entire process to achieve maximum realism with minimum effort.
A key ingredient for this hack is the (limit of) human perception, where both sensorial and neural passageways cap the amount of generated information beyond which further enhancements cannot be perceived (and efforts wasted).

This “rendering hack” has long preceded computer graphics (or machine computation) in visual art, which are traditionally based on manual efforts and thus impractical for brute force computation.
The end goal of artistic ideal can facilitate the understanding of perceptual mechanisms which in turn provide opportunities for subjective variations (such as different artistic styles and movements).

This is one main reason why I have been practicing drawing, sketching, painting, animation, design, and other creative forms. It is more of an exercise to see than to draw. (Besides, it is fun and diversifies my daily routines.)

“If you can’t explain it simply, you don’t understand it well enough.” – A quote attributed to Albert Einstein.

PS
Recent trends in black-box machine learning further moves in the opposite direction, by making the visual computation even more expensive and opaque than traditional forward rendering in computer graphics.
I look forward to see if machine learning can shed light on the artistic and subjective aspects of image formation.

May 6, 2022

Cushion

Filed under: Imaginary — liyiwei @ 10:50 pm
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The curvy soft form seems intriguing.

Was GitHub hinting me to take a break?

Filed under: Imaginary,Real — liyiwei @ 4:05 pm
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Cross posting from here.

May 2, 2022

Unicyclist painter

Filed under: Imaginary — liyiwei @ 8:50 pm
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Looking at this painting from Aaron Hertzmann, I was imaging doing that live, which needs to be hands-free and thus would be more suitable on a unicycle than a bicycle.

https://youtu.be/2zG-5SbP8hM

April 24, 2022

A dead rat which seemed to be sleeping under a dumpster bin

Filed under: Real — liyiwei @ 5:12 pm
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I spotted this little guy on a warm Sunday afternoon, sketched it, and cleaned it up.

https://youtu.be/J8IVcw8chNE

April 23, 2022

Bathtub spider

Filed under: Real — liyiwei @ 10:20 pm
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I salvaged this spider submerged at the bottom of a bathtub thinking it was dead, but it managed a last jump before its final breath.

https://youtu.be/DUelHrlEgJo

April 18, 2022

Unholy weekend

Filed under: Real — liyiwei @ 9:16 pm
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Saw this news photo which made an excellent source for gesture drawing.

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