数字图像处理与应用 Class 1. 

Lecture 1 Introduction & Fundamentals

“One picture is worth more than ten thousand words” ---Anonymous

Seeing is believing. ---Chinese Idioms

Computer vision

Graphics 图形学

Content-based image retrieval 基于内容的图像检索

Biometric 生物识别

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What is a Image?

The description of a digital image, when x, y and the amplitude values of f are:

finite 有限

discrete quantities 离散

Each of element having a particular location and values, these elements are called: Pixels

What is a Digital Image?

Digital image is referring to the image which is stored in digital format.

Digitization implies that a digital image is an approximation of a real scene

Common image formats include:

1 sample per point (B&W or Grayscale)

3 samples per point (Red, Green, and Blue)

4 samples per point (Red, Green, Blue, and “Alpha(透明度)”, a.k.a.(also known as) Opacity)

What is Digital Image Processing?

Processing digital images by means of a digital computer

Two major tasks： 图像质量提升—人、图像数据处理-机器。

Human Visual System

Structure of the Human Eye

Light and the Electromagnetic Spectrum

Application

Magnetic Resonance Imaging 磁共振成像

Radar Imaging 雷达成像

Thermal Imaging 热成像

Near Infrared Imaging

Visible Imaging 可见光成像

Fluorescence Microscopy Imaging 荧光显微成像

X-ray Imaging

Positron Emission Tomography 正电子成象术

Some Structures and Basic Knowledge

Image Acquisition
Imaging Sensors
Single Sensor Imaging
Sensor Strip Imaging
Sensor Array Imaging
Image Sampling and Quantization
Representation
Spatial & Intensity Level Resolution 空间和强度水平分辨率
Zooming and Shrinking Digital Images 放大和缩小数字图像
Basic Relationships Between Pixels
Connectivity 连通性
Adjacency 邻接
Path
Connected Set and Region
Distance Measures
Common Distance Definitions

Key Stages in Digital Image Processing

Image Acquisition、Image Enhancement、Image Restoration 图像修复、Morphological Processing 形态学处理、Segmentation、Object Recognition、Representation & Description、Image Compression、Colour Image Processing。