Image Processing

Answers to Selected Problems and Questions

Chapter 1 Introduction to Image Processing

1-4(1)  256 × 256 × (1 + 8 + 1)/9,600 = 68.3 s.

(2)1024 × 1024 [3(1 + 8 + 1)]/38,400 = 819.2 s.

1-8The minimum gray level is 0 (every position is 0), the maximum gray level is 12 (every position is 3), during which the gray levels can be continuous, so this template can represent a total of 13 gray levels. × 1024 ×

Chapter 2 Image Acquisition

2-3The camera coordinates are (–0.2, –0.4, 0). The image plane coordinates are (–0.2, –0.4).

2-9The output luminous flux of the street lamp is

$I=\frac{\Phi }{\Omega }=\frac{\Phi }{4\pi }$

The luminance at the distance r is

$B=\frac{1}{S}=\frac{1}{4\pi r^2}=\frac{\Phi }{{\left(4\pi r\right)}^2}$

Taking the values of r into the above formula, we get

$\begin{array}{l}{B}_{50}=\frac{\Phi }{}\end{array}$