https://www.bilibili.com/video/BV11N4y1g7Z8/

1 Intro

What is computational Imaging?

  • related with CG / CV / Optics …
  • Applications: 光场相机 Light Field Imaging; Non-line-of-sight Imaging(有什么意义?)

color: CRE 标准

建议学完后重看 Intro

2. Color, Human Vision System, and Display Ⅰ

SPD(Spectral Power Distribution)

image-20230925202735109

S,M,L三种锥状细胞(可以简单理解成分别响应为红绿蓝三色的细胞)

image-20230925204632959

人眼获取颜色:SPD 在视网膜(经过人眼LMS曲线)积分为RGB三色信号

这一过程实际上是 高维 -> 3维 的映射,因此必然导致:同色异谱(Metamerism)

颜色感知:

image-20230925210144199

Terms:

  • Prism: 棱镜

3. Color, Human Vision System, and Display Ⅱ

CIE,XYZ,亮度?

色彩空间

HSV

4. Cameras

相差 色散(彩色相差) 畸变

光圈

景深

分辨率的物理限制:衍射极限

sensor: Pixel, Photosite response, color filter array, many kinds of sensors…

iToF imaging?

Photos to Raw image:

image-20230927110715549

Gaussian noise / Poisson noise

image-20230927111347095

5. Image Signal Processing