1. Sampling on Spatial Domain
- FoV: it depends on 'sensor size' and 'lens focal length'
- lens focal length(=f): the distance between lens and sensor
- CCD sensor size:
- pixel size * pixel 개수
- image quality depends on the CCD sensor size!
- Pixel number:
- 일정 이상(1000 * 1000정도)가 되면 image quality에 큰 영향X
- no matter how many pixels you are quantizing, the sensor size and the quality of image is almost same
- 너무 줄여버리면 aliasing artifacts 발생
