中国大学Digital Image Processing_1期末答案(mooc完整答案)
31 min read中国大学Digital Image Processing_1期末答案(mooc完整答案)
Unit test1
1、中国1. According to the number of bands,大学答案答案 digital images can be categorized into ( ).
A、A. Multi-band images
B、期末B. Super-band images
C、完整C. Color images
D、中国D. Single-band images
2、大学答案答案2. Based on the degree of abstraction,期末 digital image processing can be categorized into three levels, namely ( )
A、A. Image analysis
B、完整B. Image interpretation
C、中国C. Image processing in a narrow sense
D、大学答案答案D. Image understanding
Homework1
1、期末1. What levels are included in the digital image processing?完整 And what are their the differences and relationships ?
2.Basic concepts
Unit 2 test
1、1.Image digitization includes the following two processes ( ).
A、中国A. Discretization
B、大学答案答案B. Enhancement
C、期末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?
中国大学Digital Image Processing_1
数字图像处理是计算机科学和电子学领域中广泛应用的技术。它涉及使用计算机算法对数字图像进行操作和处理，以改善图像质量、提取有用信息、减少噪声等。在中国大学中，数字图像处理是一门必修课程，其目的是通过理论和实践课程培养学生的计算机图像处理技能。
课程内容
数字图像处理课程主要涉及以下主题：
- 数字图像基础知识
- 图像增强
- 图像滤波
- 图像复原
- 变换和编码
- 图像分割
- 图像识别
在每个主题中，学生将学习有关算法和技术，以及如何在实践中应用这些技术。
课程教学
数字图像处理课程教学以理论和实践相结合的方式进行。课堂上，教师主要讲授相关理论知识，并以示例为基础进行演示。此外，学生还需要完成实验作业，以实践所学的内容。
在实验室中，学生将使用Matlab等图像处理工具进行实践。教师将为学生提供一些基础实验，例如图像增强和滤波的实验，以及更高级的实验，例如目标检测和图像分割。
未来应用
数字图像处理技术在许多领域中都有广泛的应用。例如，它可以用于医学图像分析和诊断，安全监控，以及计算机视觉任务，例如自动驾驶车辆等。掌握数字图像处理技术的学生将有更好的就业机会，因为该技术在未来的发展中将扮演更重要的角色。
结论
在中国大学中学习数字图像处理是非常有意义的。该课程将为学生提供有关计算机图像处理的理论和实践知识，使他们能够在将来的职业中更好地运用这种技术。
