Digital Image Processing 2nd Edition

1
Digital Image Processing 2nd Edition
Rafael C. ConzalezRichard E. Woods
???????? 2006. 3 ? ? ? kichul_at_osp.chungbuk.ac.
kr 011-9417-0233
2
Chapter 1 Introduction One picture is worth
more than ten thousand words.

• Preview
• digital image processing methods stems form two
  principal application areas
• ?improvement of pictorial information (human)
  and processing of image data (machine)
• 1.1 What is Digital Image Processing ?
• An image may be defined as a two-dimensional
  function, f(x, y),x, y are spatial coordinates,
  and the amplitude of f at any pair of coordinates
  (x, y) is called the intensity or gray level of
  the image at that point.
• When x, y, and the amplitude values of f are all
  finite, discrete quantities, we call the image a
  digital image.
• The digital image processing refers to
  processing digital images by means of a digital
  computer. Note that a digital image is composed
  of a finite number of elements, each of which has
  a particular location and value.
• These elements are referred to as picture
  elements, image elements, pels, and pixels.

3

• 1.2 The origins of Digital Image processing
• One of the first applications of digital images
  was in the newspapers industry, when pictures
  where first sent by submarine cable between
  London and New York(1920s).
• .
• In parallel with space applications, digital
  image processing techniques began in the late
  1960s and early 1970s to be used in medical image
  , remote Earth resources observations, and
  astronomy.
• 1.3 Examples of Fields that Use Digital Image
  Processing
• 1.3.1 Gamma-Ray Imaging
• 1.3.2 X-ray Imaging
• 1.3.3 Imaging in the Ultraviolet Band
• 1.3.4 Imaging in the Visible and Infrared Bands
• 1.3.5 Imaging in the Microwave Band
• 1.3.6 Imaging in the Radio Band
• 1.3.7 Examples in which Other Imaging Modalities
  Are Used

4

• 1.4 Fundamental Steps in Digital Image Processing
• Figure 1.23

5

• 1.5 Components of an Image Processing System