Chapter1
1. An image may be defined as a two-dimensional function, f(x,y), where x and y are spatial coordinates, and the amplitude of f at any pair of coordinates (x,y) is called the intensity or gray level of the image at that point.
2. Image processing includes image acquisition, image storage, image transmission and digital image processing.
3. Low level process involves primitive operations such as image preprocessing to reduce noi, contrast enhancement, and image sharpening橡皮用英语怎么说.
4. Mid-level process involves tasks such as gmentation, description, and classification (recognition) of individual objects.
5. As for mid-level process, its inputs are images, but its outputs are 先生英文attributes extracted from tho images.
6. Digital image processing encompass process who inputs and outputs are images and, in addition, encompass process that extract attributes from images, up to and including the recognition of individual objects.
7. Image restoration is bad on mathematical or probabilistic models of image degradation.
8. Image compression is to reduce the storage required to save an image, or the bandwidth required to transmit it.
9. Morphological processing is to extract image components that are uful in the reprentation and description of shape.
10. Which of the following can highlight certain features of interest of an image?
(A) Image enhancement
(B) Image restoration
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(C) Image compression
(D) Image Segmentation
Chapter2
1.在晚上光线低的情况下锥状细胞起主要作用。（x）
2.autoview At low levels of illumination vision is carried out by the rods, whereas at high levels (showing better discrimination) vision is the function of cones.
3. The perceived brightness is a simple function of intensity. (x)
4. Which of the following shows the fact that the perceived brightness is a simple function of intensity?
(A) Simultaneous Contrast
(B) Mach bands
(C) Optical illusions
(D) Perspective Illusion
5. Digitizing the coordinate values is called sampling; Digitizing the amplitude values is called quantization.
6. Intuitively, spatial resolution is a measure of the smallest discernible detail in an image.
7. Quantitatively, spatial resolution can be stated in a number of ways, with line pairs per unit distance, and dots (pixels) per unit distance.
8. Intensity resolution similarly refers to the smallest discernible change in intensity level.
9. 下列两图的直方图相同。（√）
10. Which of the following is the histogram of the following image？
lucky pig
(A) (B)
(B) (D)
11. RGB颜色模型主要用于电脑监视器。（√）
12.下列哪种颜色模型主要用于彩色喷墨打印机？（B）
（A）RGB（B）CMY（C）HSB（D）YIQ
13. There are three commonly ud image interpolation methods，which are Nearest Neighbor Interpolation大耳朵英语, Bilinear Interpolation and Cubic Polynomial Interpolation.
14. The pixels having a city-block distance from (x,y) less than or equal to some value r form a diamond centered at 男士如何保养脸部皮肤(x,y).
15. The pixels with chessboard distance from (x,y) less than or equal to some value r form a square centered at 工程造价信息化(x,y).
16.图像的直方图基本上可以描述图像的概貌。下面所给的a、b、c、d四个直方图中，哪幅直方图对应的图像最清晰？（ ）
Chapter3
一、填空
1. Image negative isillustrate to enhance white or gray detail embedded in dark regions of an image, especially when the black areas are dominant in size.
2. Log transform is to expand the values of dark pixels in an image while compressing the higher-level values.
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3. Contrast stretching is ud to expand the range of intensity levels in an image so that it spans the full intensity range of the recording medium or display device.
4. Low-contrast images can result from poor illumination, lack of dynamic range in the imaging nsor, or even the wrong tting of a lens aperture during image acquisition.
