NeRF细节整理

Download from Google driver

Use the Wget command:

小文件

1
wget --no-check-certificate "https://drive.google.com/uc?export=download&id=${Fileid}" -O "${Filename}"

大文件

1
2
wget --load-cookies /tmp/cookies.txt "https://drive.google.com/uc?export=download&confirm=$(wget --quiet --save-cookies /tmp/cookies.txt --keep-session-cookies --no-check-certificate 'https://drive.google.com/uc?export=download&id=${fileid}' -O- | sed -rn 's/.confirm=([0-9A-Za-z_]+)./\1\n/p')&id=${fileid}" -O ${filename} && rm -rf /tmp/cookies.txt

解压

1
unzip ${filename}

NDC ray space derivation

论文中的内参矩阵里的 \(n,f\) :the near and far clipping planes and \(r,t\) are the right and top bounds scene at the near clipping plane. 所以 \(\frac{r}{t}=\) Aspect ratio (屏幕高宽比)

A perspective camera

NDC

归一化