digital image processing ppt by gonzalez

... a transition from image processing methods whose input and output are images, to methods in which the inputs are images, but the outputs are attributes extracted from those images (in the sense ... techniques is to partition the image histogram by using a single global threshold, 7, as illustrated in Fig 10.26(a) Segmentation is then accomplished by scanning the image pixel by pixel and labeling ... subdivide the image into smaller subimages, such that the illumination of each subimage is approximately uniform Figure 10.30(c) shows such a partition, obtained by subdividing the image into four

Ngày tải lên: 08/05/2014, 16:29

... histograms, obtained simply by dividing all elements of h r( )k by the total number of pixels in the image, which we denote by n: n n n rec-h = imrec-hist(f, b) where f is the input image, h is its histogram, ... numerous other branches of digital image processing 3.1 Background As noted in the preceding paragraph, spatial domain techniques operate rectly on the pixels of an image The spatial domain processes ... coordinates ( , )x y in the images Trang 53.2.1 Functions imadjust and stretchlimFunction imadjust is the basic Image Processing Toolbox function for sity transformations of gray-scale images It has the

Ngày tải lên: 28/04/2014, 10:26

... Filtered Image = 37'[G(u, v)] (4.2-28) The final image is obtained by taking the real part of this result and multiply- ing it by (-1)**” to cancel the multiplication of the input image by this ... relates to image processing Some basic properties of the frequency domain We start by observing in Eq (4.2-16) that each term of F(u, v) contains all val- ues of f(x, y), modified by the values ... steps: - 1 Multiply the input image by (—1)**” to center the transform, as indicated in Eq (4.2-21) Compute F(u, v), the DFT of the image from (1) Multiply F(u, v) by a filter function H(u, v)

Ngày tải lên: 08/05/2014, 15:46

... process a color image by processing each of its component images separately, using standard gray-scale image processing methods However, the re- sults of individual color component processing are ... gray-scale events in an image or sequence of images As noted Trang 226.3 # Pseudocolor Image Processing ab ed FIGURE 6.17 (a)—(c) Modified HSI component images (d) Resulting RGB image (See Fig 6.16 ... the full-color image obtained by combining the first three images into an RGB image Full-color images of dense areas are difficult to interpret, but one notable feature of this image is the difference

Ngày tải lên: 08/05/2014, 15:59

... the image At some later time, the compressed image is decompressed to reconstruct the original image or an approximation of it 409 Trang 2410 Chapter 8 mi Image Compression Interest in image ... Trang 11418 Chapter 8 i Image Compression © Consider the images in Fig 8.4 Figure 8.4(a) shows a monochrome image with 256 possible gray levels Figure 8.4(b) shows the same image after uniform quantization ... very poor image, but you could watch it Objectionable interference is definitely present 6 Unusable An image so bad that you could not watch it Trang 14 8.2 @ Image Compression Models Image

Ngày tải lên: 08/05/2014, 16:10

... characterized by the order of the elements of which it is made, rather than by the intrinsic nature of these elements Norbert Wiener Preview We conclude our coverage of digital image processing ... noted in Section 1.1, we have defined the scope covered by our treatment of digital image processing to include recogni- tion of individual image regions, which in this chapter we call objects or ... Matching by correlation We introduced the basic concept of image correlation in Section 4.6.4 Here, we consider it as the basis for finding matches of a subimage w(x, y) of size J X K within an image

Ngày tải lên: 08/05/2014, 16:48

... Index 253 Contents Trang 16Digital Images For a long time, using a computer to manipulate a digital image (i e., digitalimage processing) was something performed by only a relatively small group ... device for digital image acquisition, be it their cell phonecamera, digital camera, or scanner, has resulted in a plethora of digital imagesand, consequently, for many, digital image processing ... Principles of Digital Image Processing, Undergraduate Topics in Computer Science, DOI 10.1007/978-1-84800-191-6_1, Springer-Verlag London Limited, 2009 © Trang 172 1 Digital Imagesdigital image processing

Ngày tải lên: 05/06/2014, 11:55

... represented by a different label and t h e points of t h a t entity are all assigned t h a t label by t h e segmentation process T h e result is called a symbolic image In this case, t h e general processing ... M T h e images handled by our algorithms so far are two-dimensional images Both t h e definition of connected components and t h e algorithms can be generahzed to three- dimensional images, which ... Tanimoto, "Time Complexity for Serial and Parallel Prop-agation in Images", in Architecture and Algorithms for Digital Image Processing, A Oosterlinck and P.-E Danielsson, (eds.) Proceedings

Ngày tải lên: 05/06/2014, 11:59

... umbrella of ‘digital image processing’ The purpose of this book is to provide an insight on the possibilities offered by digital image processing algorithms in various fields Digital image processing ... Trang 1DIGITAL IMAGE PROCESSING Edited by Stefan G Stanciu Trang 2Digital Image Processing Edited by Stefan G Stanciu As for readers, this license allows ... projected by other cameras Fortunately few of the images of laser probes projected by other cameras would lie symmetrically round the pre-known image positions of the laser probes projected by itself,

Ngày tải lên: 28/06/2014, 08:20

... umbrella of ‘digital image processing’ The purpose of this book is to provide an insight on the possibilities offered by digital image processing algorithms in various fields Digital image processing ... Trang 1DIGITAL IMAGE PROCESSING Edited by Stefan G Stanciu Trang 2Digital Image Processing Edited by Stefan G Stanciu As for readers, this license allows ... projected by other cameras Fortunately few of the images of laser probes projected by other cameras would lie symmetrically round the pre-known image positions of the laser probes projected by itself,

Ngày tải lên: 29/06/2014, 08:20

... 1.1 Images and pictures 1 1.2 What is image processing? 1 1.3 Image Acquisition and sampling 4 1.4 Images and digital images 8 1.5 Some applications 10 1.6 Aspects of image processing ... processing 11 1.7 An image processing task 12 1.8 Types of digital images 12 1.9 Image File Sizes 14 1.10 Image perception 16 1.11 Greyscale images 17 1.12 RGB Images 19 1.13 ... 71.2 WHAT IS IMAGE PROCESSING? 3(a) The original image (b) After removing noise Figure 1.2: Removing noise from an image (a) The original image (b) After removing the blur Figure 1.3: Image deblurring

Ngày tải lên: 23/07/2014, 00:24

... third image is the cat original color image. The fourth image is the spatial gain image of the luma component of the cat image produced by a Wallis statistical differencing operator. The fifth image ... (ISO) standard library ofimage processing operators and associated utilities.” Again, for a fourth time, a new edition of Digital Image Processing is offered to the image processing community Why? ... numerous image processing technical conferences There is an enormous amount of new image processing nology to be absorbed I have tried to act as a publishing filter by culling through theimage processing

Ngày tải lên: 14/08/2014, 01:22

... 314 Digital Image Processing: PIKS Scientific Inside, Fourth Edition, by William K Pratt Copyright © 2007 by John Wiley & Sons, Inc. IMAGE SAMPLING AND RECONSTRUCTION In digital image processing ... and Image Processing, Image Processingand Interchange, Part 1: Common Architecture for Imaging,” ISO/IEC 12087-1:1995(E) 22 “Information Technology, Computer Graphics and Image Processing, Image ... desired parameter of a physical image In a perfect image sampling system, spatial samples of the ideal image would, in effect, be obtained by multiplying the ideal image by a spatial sampling function

Ngày tải lên: 14/08/2014, 01:22

... more efficiently.Trang 66 Digital Image Processing: PIKS Scientific Inside, Fourth Edition, by William K Pratt Copyright © 2007 by John Wiley & Sons, Inc. DISCRETE IMAGE MATHEMATICAL CHARACTERIZATION ... Southern California, Image Processing Institute, Los Angeles, August1975 R p = E pp∗{ T} = E Tff∗{ TT∗T} = TR f T∗T K p = TK f T∗T p = Tf K p = TK f T∗T = ΛΛ K f Trang 247 Digital Image Processing: PIKS ... space invariant, theoutput image field may be described by the convolution integral (7.2-1b) For discrete processing, physical image sampling will be performed on the outputimage field Numerical representation

Ngày tải lên: 14/08/2014, 02:20

... for Image Processing,” ReportUSCIPI 950, University Southern California, Image Processing Institute, January 1980 Trang 23PART 4IMAGE IMPROVEMENT The use of digital processing techniques for image ... theextended image matrix KE by (9.2-6a) For sampled image superposition, (9.2-6b) The number of computational operations required to obtain kE by transform domain processing is given by the previous ... for image formation andrestoration, and present methods of point and spatial image restoration The finalchapter of this part considers geometrical image modification Trang 2510 Digital Image Processing:

Ngày tải lên: 14/08/2014, 02:20

... Trans Image Processing, 12, 12, December 2003, 1591–1598. 41 O D Faugeras, “Digital Color Image Processing Within the Framework of a Human Visual Model,” IEEE Trans Acoustics, Speech, Signal Processing, ... 1975 Trang 411 Digital Image Processing: PIKS Scientific Inside, Fourth Edition, by William K Pratt Copyright © 2007 by John Wiley & Sons, Inc. IMAGE RESTORATION MODELS Image restoration may ... 11.1-1 Digital image restoration model. C x y t( , , ,λ)λ O P{ }· λ( ) Trang 6GENERAL IMAGE RESTORATION MODELS 309A digital image restoration system that follows produces an output array by the

Ngày tải lên: 14/08/2014, 02:20

... of Digital Images,” IEEE Trans Image Processing, 10, 3, March 2001, 393–402. Trang 313 Digital Image Processing: PIKS Scientific Inside, Fourth Edition, by William K Pratt Copyright © 2007 by ... 3714 Digital Image Processing: PIKS Scientific Inside, Fourth Edition, by William K Pratt Copyright © 2007 by John Wiley & Sons, Inc. MORPHOLOGICAL IMAGE PROCESSING Morphological image processing ... geometrical image manipulation: image mosaicing and image blending. Image mosaicing involves the spatial combination of a set of partially overlappedimages to create a larger image of a scene Image

Ngày tải lên: 14/08/2014, 02:20

... DETECTIONof optical images of real scenes, generally do not possess step edges because the aliasing low-pass filtering prior to digitization reduces the edge slope in the digitalimage caused by any sudden ... aluminance image: differential detection and model fitting With the differential detec-tion approach, as illustrated in Figure 15.1-6, spatial processing is performed on anoriginal image to produce ... Figure 15.1-3 by forming the pixel differ-ence separated by a null value The row and column gradients then become (15.2-8a)(15.2-8b) FIGURE 15.2-3 Roberts gradients of the peppers_mon image. Trang

Ngày tải lên: 14/08/2014, 02:20

... Trang 3317 Digital Image Processing: PIKS Scientific Inside, Fourth Edition, by William K Pratt Copyright © 2007 by John Wiley & Sons, Inc. IMAGE SEGMENTATION Segmentation of an image entails ... separation of the image into regions of similar attribute The most basic attribute for segmentation is image luminanceamplitude for a monochrome image and color components for a color image Imageedges ... Laws, “Textured Image Segmentation,” USCIPI Report 940, University of SouthernCalifornia, Image Processing Institute, Los Angeles, January 1980 Trang 31REFERENCES 57732 R M Haralick, “Digital Step

Ngày tải lên: 14/08/2014, 02:20

... Ong and P A Lee, “Image Analysis by Tchebichef Moments,” IEEE Trans Image Processing, 10, 9, September 2001, 1357–1364. 32 P.-T Yap, R Paramesran and S.-H Ong, “Image Analysis by Krawtchouk Moments,” ... October 2005, 1671–1674. Trang 2419 Digital Image Processing: PIKS Scientific Inside, Fourth Edition, by William K Pratt Copyright © 2007 by John Wiley & Sons, Inc. IMAGE DETECTION AND REGISTRATION ... symbol images. Trang 6SPATIAL MOMENTS 633 18.3.1 Discrete Image Spatial MomentsThe spatial moment concept can be extended to discrete images by forming spatialsummations over a discrete image

Ngày tải lên: 14/08/2014, 02:20