尔雅Digital Image Processing_1章节答案(学习通2023课后作业答案)
76 min read尔雅Digital Image Processing_1章节答案(学习通2023课后作业答案)
Unit test1
1、尔雅1. According to the number of bands,章节 digital images can be categorized into ( ).
A、A. Multi-band images
B、答案B. Super-band images
C、学习C. Color images
D、通课D. Single-band images
2、后作2. Based on the degree of abstraction,业答 digital image processing can be categorized into three levels, namely ( )
A、A. Image analysis
B、尔雅B. Image interpretation
C、章节C. Image processing in a narrow sense
D、答案D. Image understanding
Homework1
1、学习1. What levels are included in the digital image processing?通课 And what are their the differences and relationships ?
2.Basic concepts
Unit 2 test
1、1.Image digitization includes the following two processes ( ).
A、后作A. Discretization
B、业答B. Enhancement
C、尔雅C. Quantization
D、D. Sampling
2、2.Image features are an important basis for image analysis and can be divided into two types: natural features and artificial features. Which of the followings are natural features( )
A、A. Temporal features
B、B. Spectral features
C、C. Edge features
D、D. Geometric features
Homework2
1、Count and draw the gray histogram of the following image. 0 1 1 2 3 1 3 2 7 6 5 0 6 2 5 7 6 6 0 1 1 6 4 3 2 7 6 5 5 3 6 5 3 2 2 7 2 6 6 1 2 6 5 0 2 7 5 0 1 2 3 2 1 2 1 2 3 2 1 3 1 1 2 2
3.Image transformation
Unit3 test
1、1.The two-dimensional Fourier transform has several properties and conversion laws . Which of the following properties belong Fourier transform ( ).
A、A. Separability
B、B. Derivability
C、C. Symmetry
D、D. Conjugate symmetry
2、2.In the digital image processing, the purpose of the image orthogonal transform is to ( ).
A、A. facilitate the image feature extraction
B、B. assist to conceptually enhance the understanding of image information
C、C. Convert the image into a form more conducive for automatic analysis
D、D. Simplify image processing problems
Homework3
1、1. Perform Fourier transform of the one-dimensional signal f(x)= [1 0 1 0].
4.Image enhancement
Unit 4 test
1、Image enhancement can be categorized into ( ) enhancement according to the action domain.
A、frequency domain
B、time domain
C、spatial domain
D、Spectral domain
2、2.Histogram correction mainly includes ( ) and ( ).
A、histogram standardization
B、histogram equalization
C、histogram matching
D、histogram binarization
3、3.( ) belong to frequency domain processing methods.
A、Trapezoidal high-pass filtering
B、Exponential high-pass filtering
C、Butterworth low-pass filter
D、Gradient sharpening
Homework 4
1、Histogram equalization is carried out for the following figure.
5.Image restoration and reconstruction
Unit 5 test
1、1. Which of the following statements about image restoration and image enhancement are correct.( )
A、A. Image restoration and image enhancement are both fidelity processes.
B、B. If the image was degraded, the enhancement process should be done at first.
C、C. Image restoration and image enhancement are both for improving image quality.
D、Image enhancement can ignore whether the processed image is distorted or not, as long as the image looks comfortable.
2、2.What steps does the geometric correction of image generally include.( )
A、A. Spatial coordinate transformation.
B、B. Grayscale quantization.
C、C. Image fitting.
D、D. Grayscale determination.
Homework 5
1、1.If there is image f (x, y), whrer f(1,1)=5,f(1,2)=1,f(2,1)=4,f(2,2)=3, determine the gray value of the point (1.2,1.6) according to nearest neighbor method and bilinear interpolation method.
6. Image compression
Unit 6 test
1、1. For an image with 100 * 100 pixels, each pixel has 8-bits to express its gray scale.If the data volume of the compressed image is 40000 bits after Huffman coding , the compression ratio of the image is ( ).
A、A. 4:1
B、B. 3:1
C、C. 1:2
D、D. 2:1
2、2.The most commonly used objective fidelity criteria include ( ).
A、A. absolute error between original image and decoded image.
B、B. signal noise ratio between original image and decoded image.
C、C. the RMS error between the original image and the decoded image.
D、D. amount of information
Homework 6
1、1.Encoding the source aaaabbbccdeeeeefffffff by Huffman method,how much space is needed to store its code ?
7.Image Segmentation
Unit 7 test
1、1.Which of the following image edge detection operators is the best anti-noise performance?
A、A. Prewitt operator
B、B. Roberts operator
C、C. Laplacian operator
D、D. Gradient operator
2、2.Which direction dose the edge template [-1 1] detect?( )
A、A.Horizontal direction
B、B.vertical direction
C、C.45°
D、D.135°
Homework 7
1、1.What are the characteristics of the Laplacian edge detection operator? What is the difference between Laplacian edge detection operator and Laplacian enhancement operator?
8. Binary image processing and analysis
Unit 8 test
1、1. How many connections dose the branch point in the binary image have?( )
A、A. 2
B、B. 3
C、C. 1
D、D. 0
2、2.In a binary image, ( ) is deletable point.
A、A. Isolated point
B、B. Connection point
C、C. Internal point
D、D. Endpoint
Homework 8
1、1.How to determine the connectivity of pixels according to the number of connections?
9. Texture analysis
Unit9 test
1、1.What features are extracted from the gray level co-occurrence matrix?
A、A. Contrast
B、B. Entropy
C、C. Second moment
D、D. Mixed entropy
Homework 9
1、1. What are the steps of GLCM texture analysis?
Final examination
Digital Image Processing
1、9. In binary image, the connected number of a boundary point is ( )
A、0
B、1
C、2
D、3
2、1. The digital image processing system is composed of ( ) components.
A、Image acquisition
B、Resampling
C、Image segementation
D、Storage
E、Display
F、Image processing and analysis
G、Signal communication
3、2.( ) are two-dimensional Fourier transform properties.
A、Continuity
B、Conjugate symmetry
C、Homogeneity
D、Separability
4、3.( ) are operators patial domain smoothing .
A、a)Median filtering
B、b)Histogram equalization
C、c)Mean filtering
D、d)Laplacian
5、4.Gray interpolation method is used to determine the gray value of each pixel in the correction space. ( ) are usually three methods.
A、Nearest neighbor
B、Bilinear
C、Triangulation network
D、Cubic polynomial
6、5. When designing the image restoration module in the image processing software, the available algorithms include ( ).
A、a)Wiener filtering
B、b)inverse filtering
C、c) color transformation
D、d) image sharpening
7、6.Pseudo color enhancement includes ( ) methods.
A、density slicing
B、grayscale-color conversion
C、false color synthesis
D、HIS transformation
8、7.The purpose of image compression is to ( ).
A、reduce the amount of data
B、simply algorithm
C、improve transmission efficiency
D、improve image quality
9、8.Image edge detection includes ( ) Operators.
A、gradient
B、Robert
C、Sobel
D、median filtering
10、10.( ) are all image segmentation methods.
A、Region growing
B、Image enhancement
C、K-mean clustering
D、Region segementation
Digital image processing
1、1.List 5 different applications of grayscale histogram in digital image processing.
2、2.What are the hardware components of digital image processing system? According to the knowledge learned, what basic functions should the image target recognition include?
学习通Digital Image Processing_1
数字图像处理是一门计算机科学领域的学科，主要涉及数字图像的获取、处理、分析和理解。
课程概述
这门课程是学习通上的数字图像处理第一部分，主要介绍了数字图像基础知识、灰度变换、空域滤波等内容。
数字图像基础知识
数字图像是由像素点构成的，每个像素点都有一个灰度值或颜色值。像素点的数量和分辨率决定了图像的大小和清晰度。
灰度变换
灰度变换是将原始图像的像素值进行线性或非线性变换，以得到新的图像。常见的灰度变换包括对数变换、伽马变换、直方图均衡化等。
空域滤波
空域滤波是指将滤波器应用于图像的像素点，以达到抑制噪声、增强边缘等目的。常见的空域滤波包括均值滤波、中值滤波、高斯滤波等。
课程收获
通过学习这门课程，我对数字图像处理有了更深入的认识。我了解了数字图像的基本概念和处理方法，学会了使用matlab进行图像处理代码编写。
学习心得
在学习过程中，我深刻体会到了数字图像处理的重要性。数字图像处理在各个领域中都有广泛的应用，如医学图像处理、遥感图像处理、安防图像处理等。
同时，我也认识到了自己的不足，如matlab编程能力有待提高，对一些概念的理解还需加强。
结语
学习通Digital Image Processing_1是一门非常实用的课程，它为我打开了数字图像处理的大门，让我了解到了这个领域的基本知识和方法。我相信，通过不断学习和实践，我会在这个领域中有所建树。
学习通Digital Image Processing_1
数字图像处理是一门计算机科学领域的学科，主要涉及数字图像的获取、处理、分析和理解。
课程概述
这门课程是学习通上的数字图像处理第一部分，主要介绍了数字图像基础知识、灰度变换、空域滤波等内容。
数字图像基础知识
数字图像是由像素点构成的，每个像素点都有一个灰度值或颜色值。像素点的数量和分辨率决定了图像的大小和清晰度。
灰度变换
灰度变换是将原始图像的像素值进行线性或非线性变换，以得到新的图像。常见的灰度变换包括对数变换、伽马变换、直方图均衡化等。
空域滤波
空域滤波是指将滤波器应用于图像的像素点，以达到抑制噪声、增强边缘等目的。常见的空域滤波包括均值滤波、中值滤波、高斯滤波等。
课程收获
通过学习这门课程，我对数字图像处理有了更深入的认识。我了解了数字图像的基本概念和处理方法，学会了使用matlab进行图像处理代码编写。
学习心得
在学习过程中，我深刻体会到了数字图像处理的重要性。数字图像处理在各个领域中都有广泛的应用，如医学图像处理、遥感图像处理、安防图像处理等。
同时，我也认识到了自己的不足，如matlab编程能力有待提高，对一些概念的理解还需加强。
结语
学习通Digital Image Processing_1是一门非常实用的课程，它为我打开了数字图像处理的大门，让我了解到了这个领域的基本知识和方法。我相信，通过不断学习和实践，我会在这个领域中有所建树。
