Who Am I ?

I’m FactorialN, an amateur of computer graphics.

At the age of 5, I watched an animation called Digimon. I was deeply moved by Digimons, Digital world and computer science showed in that animation. From then on, I’ve been crazy about rebuilding the whole world with computer technology.

I believe, one day, I will really build up my own digital world. This will always be my dream, and  I have the power to realize my dream.

無限大な梦のあとの 何もない世の中じゃ

Use Mitsuba 2 for Finite Difference Calculation

Mitsuba 2 is the latest Physically-based renderer that supports forward and inverse rendering. I’m now working a topic related to differential computation, and I decided to use Mitsuba 2 as my basic platform.

Path Differential and Finite Difference

Finite Difference: $$f'(a)=lim_{h\to 0}\frac{f(a+h)-f(a)}{h}$$

Path Differential: $$\frac{\partial I}{\partial x}(a)=lim_{x\to 0}\frac{I(a+x)-I(a)}{x}$$

Mitsuba 2 Compilation and Computation

According to the instruction, you should use the following commands to clone and compile Mitsuba 2 on macOS Catalina.

git clone --recursive https://github.com/mitsuba-renderer/mitsuba2
mkdir build
cd build
cmake -GNinja ..
source setpath.sh
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Paper Reading: Differential, Temporal Denoising and Control Variants


Differentiable Monte Carlo Ray Tracing through Edge Sampling


Work: compute rendering gradient

Application: Inverse Rendering(image->scene), deep learning

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Sgt. Pepper’s Lonely Hearts Club Band

Decided to write something about the music I love. I’m not a Pro at music, so I’ll focus more on the emotion of the music, instead of genres or techniques.

Sgt. Pepper’s Lonely Hearts Club Band on Apple Music

The Beatles’ Psychedelic Rock Essential Album.

This might be one of the most gorgeous album of The Beatles’. During the process of this album, I can feel the fluctuating emotions of The Beatles. The album started cynically with Sgt. Pepper’s Lonely Hearts Club Band, and becomes a bit optimistic with Getting Better, then becomes pain and affectionate with She’s Leaving Home.

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