数字图像处理习题

第2章 数字图像处理基础

1．简述图像的代数运算。

2．简述灰度直方图的概念、性质及其应用。

3．通常而言，图像格式有哪些特征？

4．简述几种常用的图像文件格式。

5．简述数字图像的类型。

1.Describe the algebraic operation of the image briefly.

2.Describe the concept, properties and applications of gray histogram briefly.

3.Generally speaking, what are the characteristics of the image format?

4.Describe several common image format briefly.

5.Describe the type of digital image briefly.

第3章 图像的几何变换

1．自行将一幅图像进行平移、裁剪、缩放、旋转、错切、镜像等变换，比较各种变 换的效果。

1.Parallel shift,tailor,shrink,magnify,rotate,shear,mirror an image,and comparative effects of various kinds of transformation.

第4章 图像的频域变换

1．小波变换是如何定义的？小波分析的主要优点是什么？

1.How to define the wavelet transform? What are the main advantages of wavelet analysis?

第5章 图像增强

1．图像增强的目的是什么？包括哪些内容？

2．图像的增强技术主要有哪几类?

3．灰度变换的目的是什么?实现方法有哪些?

4．什么是灰度直方图？如何计算？

5. 均值滤波的基本原理是什么？中值滤波的特点是什么？比较它们之间的联系与区别。

6．平滑滤波和锐化滤波的目的分别是什么？

7．简述用平滑滤波和锐化处理之间的区别和联系。

8．什么是同态滤波？简述其基本原理。

9．带通带阻滤波器与高通、低通滤波器之间有什么关系？它们的作用与高通、低通滤波器有什么不同?

10.对图像进行处理时，空域增强和频域增强有什么关系？

1.What is the purpose of image enhancement? What does it include?

2.Which a few kinds does image enhancement have?

3.What is the purpose of gray transformation? What are the implementation

method?

4.What is the gray histogram? How to calculate?

5.What is the basic principle of average filter? What is the characteristics of median filter? Compare the relationship and difference between them.

6.What are the purposes of smoothing filter and sharpening processing respectively?

7.Describe the distinction and contact between smoothing filter and sharpening processing briefly.

8.What is homomorphic filter? Describe its basic principle briefly.

9.What is the relationship between band-pass, band-stop filter and low-pass, high-pass filter? What's the difference between their effects?

10.When the image processing, what is the relationship between airspace enhancement and frequency enhancement?

第6章 图像复原

1．什么是图像复原？图像复原与图像增强有什么区别？

2．图像的几何校正一般包括哪些步骤？灰度内插主要有哪几种方法？

3. 试用MATLAB实现维纳滤波复原。

1.What is image restoration? What is the difference between image restoration and image enhancement?

2.What steps does the image geometric correction include generally? What are the main types of gray level interpolation method?

3.Try to realize wiener filtering restoration by MATLAB.

第7章 图像分割

1. 什么是区域？什么是图像分割？

2. 边缘检测的理论依据是什么？有哪些方法？各有什么特点？

3. Laplacian边缘检测算子与Laplacian边缘增强算子有何区别？

4. 常用的3种最简单的图像分割法各有何特点？

5. 用MATLAB演示边缘检测、四叉树分裂合并分割法。

6. 什么是Hough变换？试述采用Hough变换检测直线的原理。

7. Hough变换检测直线时，为何不采用y＝kx+b的表示形式?

1.What is the area? What is the image segmentation?

2.What is the theoretical basis of the edge detection? What are the methods? What are the characteristics of each methods?

3.What is the difference between Laplacian edge detection operator and Laplacian edge enhancement operator?

4.What are the different characteristics of three simplest frequently-used methods of image segmentation?

5.Demonstrate edge detection and quadtree split merge segmentation by MATLAB.

6.What is the Hough transform? Try to state the principle of detecting line by Hough transform.

7.When detecting line by Hough transform, why not use the expression form of y=kx+b?

第8章 数学形态学及其应用

1．画出用一个半径为r／4的圆形结构元素膨胀一个半径为r的圆的示意图。

2．画出用一个半径为r／4的圆形结构元素腐蚀一个边长为r的正方形的示意图。

3．不同的结构元素对同一副图像的腐蚀或膨胀会有所不同，举例说明结构的哪些因

素对图像的腐蚀、膨胀有影响。

4．数学形态学的基本运算——腐蚀、膨胀、开和闭运算是否有共同性质？如果没有， 说明原因；如果有，总结它们有哪些共同性质。

Draw a radius of r / 4 circular structure elements