图像的采样与量化 Illumination (energy (Internal)image plan b de FIGURE 2. 15 An example of the digital image acquisition process. (a) Energy ("illumination")source. (b)Anel- ement of a scene.(c)Imaging system. (d) Projection of the scene onto the image plane. (e) Digitized image 22图像的采样与量化 22