一、 单项选择题
1. Digital image as finite set of digital values, called ______ （数字图像由有限个数字构成，这些数字可
以称为） a. Pixel b. Pels
c. Picture Element d. All of the above
2. Pixel values typically represent ____（像素值一般表示什么值）
a. gray levels b. colors c. heights d. Opacities. e. All of the above
3. A 1 bpp image uses 1-bit for each pixel, so each pixel can be either _____.（一个 1 bpp（Bit Per Pixel）
图每个像素只使用一位来存储，所以每个像素可以是） a. Have 8 color b. On or off c. Have gray color d. Have 4 color
4. 3 bpp image can have ____ （3 bpp图可能有多少种颜色）
a. 4 color b. 6 color c. 8 color d. 2 color
5. Highcolor, usually meaning 16 bpp, normally has ___ bits for red and blue, and ___ bits for green.
（高彩，通常指 16 bpp，一般用多少位来表示红和蓝，用多少位来表示绿） a. 5, 6 b. 6, 5 c. 8, 9
d. All of the above
6. The value that denotes white color can be calculated as : white color=_____
（表示白色的值可以怎样计算？） a. 2bpp -1 b. 1-2bpp c. 2bpp - 1 d. 2bpp
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7. The famous gray scale image is of ____ bpp , means it has 256 shades.
（流行的灰度图像的bpp值是多少，即它有256种灰度） a. 8 b. 4 c. 24
d. None of the above
8. Binary images have a format of _____
（二值图的文件格式是） a. JPG b. PBM c. PNG d. GIF
9. 8 bit color format was used initially by early models of the operating systems ___and the early color
Macintoshes. （什么操作系统早期模型和早期彩色苹果机最初开始使用8位图） a. Microsoft Windows b. LINUX c. UNIX d. DOS
10. The distribution of 16 bit has been done like this.
（16位的分配可以这样：） a. 5 bits for R, 6 bits for G, 5 bits for B. b. 6 bits for R, 5 bits for G, 5 bits for B. c. 5 bits for R, 5 bits for G, 6 bits for B. d. 5 bits for R, 5 bits for G, 5 bits for B.
11. _______ Computers used to improve the quality of images of the moon taken by the Ranger 7 probe
（哪一年计算机被用来提高7号探测器拍摄的月球图像质量） a. 1965 b. 1964 c. 1963 d. 1960
12. p(x, y) is a pixel: which one is N4 (p): 4 neighbor of P
(哪一个是像素p的4邻域) * * P * * a. * * b. P * * * * * * P * * * * c. 13. Which statement represent path:（下面哪个定义表示通路）
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a. from pixel p with coordinates (x,y) to pixel q with coordinates (s,t) is a sequence of distinct pixels
with coordinates (x0,y0), (x1,y1),….. ,(xn,yn), where (x0,y0)=(x,y) and (xn,yn)=(s,t) and (xi,yi) adjacent to (xi-1,yi-1), 1<=i<=n
（从坐标为(x,y)的像素p到坐标为(s,t)的像素q的通路是不同像素组成的像素系列：(x0,y0), (x1,y1),….. ,(xn,yn)，这里 (x0,y0)=(x,y) ， (xn,yn)=(s,t) 并且 (xi,yi) 与(xi-1,yi-1) 邻接, 1<=i<=n）
b. a set of pixel in an image where all component pixels are connected.
c. 4‐adjacency: two pixels p and q with values in V are 4‐adjacent if q is in the set N4(p) d. None of the above 14. The equation is called:
(上面这个公式表示：) a. Euclidian Distance b. City Block distance c. Chess board distance d. None of the above 15. What is digital image?
a. When x, y, and the amplitude values of f are all infinite, discrete quantities, we call the image a digital
image.（数字图像表示成f(x,y)，如果x,y,f的值都是无限，离散值，则这个图像称为数字图像） b. When x, y, and the amplitude values of f are all finite（有限）, discrete quantities, we call the image a
digital image. c. a & b d. None of these 16.
PGM stand for_____ （PGM表示什么） a. Portable Gray Map b. Permanent Gray Map c. Primary Gray Map d. None of the above
17. The human eye is more sensitive to errors in _____ than in the other two primary colors（人类眼睛对什
么基色的错误比其它基色更敏感）
a. Blue b. Red c. Green
d. None of the above
18. Which statement is used to enclose the for loop body.（matlab中下面哪个用来表示for循环体的结束）
a. } b. :
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c. END d. ;
19. Which one is wrong option for image reading in MATLAB. （对于读取图像，matlab中下面哪个是错
误的选项）
a. imread(? ?); b. loadimage(? ?); c. only (a)
d. none of the above
20. How to convert RGB image to gray (matlab中哪个函数可以用来将RGB图像转换成灰度图)
a. rgbgray( ); b. imrgb2gray( ); c. rgb2gray(); d. none of the above
1. Pixel is the term used most widely to denote the _____ of a digital image.(像素通常是指数字图像的
什么)
a. Elements b. Array c. Point
d. None of the above
2. The number of distinct colors that can be represented by a pixel depends on the number of ______
(一个像素能表达多少种颜色取决于什么)
a. bpv b. bpp c. (a)and (b) d. None of the above
3. Highcolor, usually meaning ______, normally has five bits for red and blue, and six bits for green.
（高彩通常指什么，它一般分别用5位来表示红和蓝，绿用6位来表示）
a. 8 bpp b. 18 bpp c. 16 bpp
d. None of the above
4. For applications involving transparency, the 16 bit may be divided into five bits each of red, green,
and blue, with one bit left for _______. （对于涉及透明的应用，16位的分配通常是红，绿，蓝各占5位，剩下1位用于什么）
a. transparency b. power
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c. gray scale d. None of the above
5. Shades can be represented as: Shades =Number of color=___ (色调可以表示为：色调=颜色数量= ?)
a. bpp2 b. 2bpp c. 2-bpp
d. None of the above
6. The format of 8 bit color images are_____. (8位彩色图的格式是)
a. PBM b. JPG c. PNG d. PGM
7. The distribution of 16 bit has been done like this. （16位的分配可以是____）
a. 5 bits for R, 5 bits for G, 5 bits for B, 1 bits for alpha channel. b. 5 bits for R, 6 bits for G, 4 bits for B, 1 bits for alpha channel. c. 6 bits for R, 3 bits for G, 6 bits for B, 1 bits for alpha channel. d. 4 bits for R, 6 bits for G, 4 bits for B, 2 bits for alpha channel.
8. ______s: Digital image processing begins to be used in medical applications(哪一年代，数字图像处
理开始应用于医学)
a. 1960 b. 1956 c. 1970 d. 1920
9. p(x, y) is a pixel. which one is ND (p): Diagonal neighbor of P (哪一个是像素p的对角邻域)
* * a. * P * * * * * P * * * * b. * * c. * * P 10. The equation is called : (下面这个公式表示像素p, q间的距离，请问是哪种距离)
a. Euclidian Distance b. City Block distance c. Chess board distance d. None of the above
11. s = c * log(1 + r), is use for.
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