Computer Vision Foundations · 免费预览
针孔困境与透镜
裸孔的清晰度与亮度权衡、经斯涅尔定律发生的折射，以及透镜为摆脱这一权衡所必须完成的任务。
1. A hole cannot be both sharp and bright
A hole cannot be both sharp and bright
2. Bending light with Snell's law
Bending light with Snell's law
3. What a lens must do
What a lens must do
4. The plan for this module
The plan for this module
5. Why a wider hole blurs
A pinhole camera is rebuilt with the hole widened to four times its original diameter. The image becomes brighter but blurrier. What is the geometric reason for the blur?
6. Snell's law at a small angle
A ray in air meets a flat glass surface with refractive index at an angle of degrees from the normal. Using the small-angle form , what angle does the ray make inside the glass?
7. The angle inside the glass
A ray travels in air and meets a glass surface with index at degrees from the normal. Using the small-angle form , compute the angle inside the glass in degrees and write the number.