Digital image processing
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Digital Image Processing. Dr. Ren Mingwu Lab 603, Department of computer Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China Tel: 025-4315751-724 Email:[email protected] Reference books in Chinese : 《图象工程》上下册,章毓晋,清华大学出版社。 《图象分割》,章毓晋,清华大学出版社。

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Digital Image Processing

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Digital image processing

Digital Image Processing

Dr. Ren Mingwu

Lab 603, Department of computer Science and Engineering,

Nanjing University of Science and Technology, Nanjing 210094, China

Tel: 025-4315751-724

Email:[email protected]

任明武,南京理工大学计算机系


Digital image processing

  • Reference books in Chinese:

  • 《图象工程》上下册,章毓晋,清华大学出版社。

  • 《图象分割》,章毓晋,清华大学出版社。

  • 《计算机视觉》,吴立德, 复旦大学出版社。

  • 《图象处理与分析》, 徐建华, 科学出版社。

  • 《计算机视觉与模式识别》郑南宁,国防工业出版社。

  • Reference journals in Chinese

  • 《计算机研究与发展》

  • 《中国图像图形学报〉

  • 《计算机工程 》

  • 《模式识别与人工智能 》

  • 《电子学报》

任明武,南京理工大学计算机系


Digital image processing

References in English (can be found in library or Lab 603, in NUST)

《IEEE Transactions on Pattern Analysis and Machine Intelligence》, Abbreviated by T-PAMI

《IEEE Transactions on Image Processing 》,T-IP

《Pattern Recognition》,PR

《Image and Vision Computing》,IVC

《Optical Engineering》,OE

《Artificial Intelligence》,AI

《Computer Vision and Image Understanding》,CVIU

《Graphical Models and Image Processing》,GMIP

《Machine Vision and Applications》,MVA

《Pattern Recognition Letters》,PRL

任明武,南京理工大学计算机系


Chapter 1 preface

Chapter.1 Preface

1.1 Intruduction

Digital Image processing, that is, the manipulation of images by computer, has been playing a more and more important role in today’s computer field. Four factors stimulate its development as the following:

(1) Declining cost of the computer equipment required.

(2) Increasing availability of equipment for digitizing and displaying images.

(3)New technology, such as inexpensive charge-coupled device (CCD), new memory technologies for large low-cost image storage arrays, and inexpensive, high-resolution color display systems, trends to further the growth of the field.

(4)Widely applied in commercial, medical application, industrial and in scientific research. <some examples>

任明武,南京理工大学计算机系


Digital image processing

1.2 The Elements of Digital Image processing System

Fig.1 A physical image and a corresponding digital image

任明武,南京理工大学计算机系


Digital image processing

Fig.2 Digitizing an Image

任明武,南京理工大学计算机系


Digital image processing

Here,

任明武,南京理工大学计算机系


Digital image processing

Fig.3 A digital image processing system

There are two popular input devices: Camera and Scanner

任明武,南京理工大学计算机系


Digital image processing

The Curve of

wavelength response

A digital Camera

A normal

anolog

camera

A pinhole camera

A line CCD device 2048x1

任明武,南京理工大学计算机系


Digital image processing

Technical Specipications

A dome camera

传统摄像机+内置服务器+内置网卡,通过以太网或互联网进行访问,支持远程控制(云台+解码器+镜头),支持客户端多路同时录像,远端的浏览者不需任何专业软件,只要标准的网络浏览器(Microsoft IE 或Netscape)

A IP Camera

任明武,南京理工大学计算机系


Digital image processing

A simple camera

Usually called PC Eye

常用的摄像机与计算机的接口方式:

(1)模拟摄像机+专业图像卡

(2)模拟摄像机+多媒体卡

(3)数字摄像机+USB接口

(4)数字摄像机+1394接口(或接口卡)

(5)高分辨率数字摄像机+专业的数字接口卡(RS644、LVDS卡)

任明武,南京理工大学计算机系


Digital image processing

ICOLOR

(PCI)

B_ORION

(AGP)

带CPU 的Odyssey Xpro

任明武,南京理工大学计算机系


Digital image processing

扫描仪与计算机的接口方式

(1)扫描仪+并口

(2)扫描仪+SCSI卡

(3)扫描仪+USB接口

(4)扫描仪+1394接口(或接口卡)

克里奥iQSmart扫描仪

传感器:CCD平台式

最大分辨率(光学): 5,500×10,000dpi

最大分辨率(插值): 10,000dpi

颜色深度: 16bit

最大密度:4.1

密度范围:3.9

接口方式:IEEE1394

Panasonic 2045c高速扫描仪

传输速度:20MB/s

接口方式:Ultra SCSI

耐久度:大约500万张

最大扫描幅面:A4

扫描速度:200dpi时,

     A4双面/2秒钟

任明武,南京理工大学计算机系


Digital image processing

一种1394卡

一种多媒体卡

一种电视台专用编辑卡

任明武,南京理工大学计算机系


Digital image processing

美国Coreco公司

BanditII图像卡

加拿大

Matrox公司

B_Orion图像卡

任明武,南京理工大学计算机系


Digital image processing

1.3 The Terminology of Digital Image processing

Fig.4 Types of Images

A digital image is now a two-dimensional rectangular array of quantized sample values

任明武,南京理工大学计算机系


Digital image processing

IR(Infra-red) : Temperature

任明武,南京理工大学计算机系


Digital image processing

Tab.1 The differences Between Image Processing,Image Analysis, and computer graphics

However, digital image processing usually covers both digital image processing and image analysis.

任明武,南京理工大学计算机系


Digital image processing

1.4 The Tasks/Contents of Digital Image processing

1.4.1 Three Levels

Small(小)

High(高)

Symbol

(符号)

图象理解

High Level (高层)

quantity of data

(数据量)

Abstract degree

(抽象程度)

Semantic

(语义)

Targets

(目标)

图象分析

Middle Level(中层)

Pixels

(象素)

图象处理

Low Level(低层)

Low(低)

Large(大)

任明武,南京理工大学计算机系


Digital image processing

1.4.2 Contents

A:Image Processing

A1 Acquirement and Sampling(图象采集与获取), Camera Calibrating(成象方法、摄象机校正等)

A2 Image Restoration(图象重建), epically from camera, such as CT.

A3 Image Transform, Filtering, Enhancement, and Recovery( 图象变换、滤波、增强、恢复或复原等)

A4 Image Compression and Coding(图象压缩编码)

B:Image Analysis

B1 Edge Detection, Segmentation(边缘检测、图象分割)

B2 Target Expression, Description, and Measurement(目标表达、描述、测量)

B3 Target Shape, Texture, movement(目标形状、纹理、空间、运动等的分析)

B4 2-D Target recognition, classification and extraction(2维目标的识别、分类和提取)

C:Image Understanding

C1 Image match, console point match (序列、立体)图象(特征点)匹配

C2 3-D Model, scene recovery ( 建模、客观场景恢复)

C3 scene understanding

任明武,南京理工大学计算机系


Digital image processing

1.4.3 An example

Image Understanding

(There are a table near middle and a desk on up-right corner)

Image Analysis

(Segmentation)

Image Analysis

(Edge Detection)

Image Processing

(Median Filter)

Original Image

任明武,南京理工大学计算机系


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