digital image processing techniques ppt

... 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 ... Bibliography 249 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

Ngày tải lên: 05/06/2014, 11:55

... http://www.efg2.com/Lab/Library/ImageProcessing/DHALF.TXT - dither.txt – everything you ever wanted to know about dithering!  Computer Graphics, (C version) by D Hearn Trang 47Digital Image ProcessingSome Special Techniques ... Trang 1Digital Image ProcessingSome Special Techniques Dithering Trang 2 Dithering, also called Halftoning or Color Reduction, is the process of rendering an image on a display device ... Once an image has been dithered, although it may look like a good reproduction of the original, information is permanently lost  Many image processing functions fail on dithered images Trang

Ngày tải lên: 30/01/2020, 07:51

... referred to as neighborhood processing, or spatial formulations representative of processing techniques in these two categories We also introduce the concept of fuzzy image processing and develop ... however, these techniques are general in scope and have uses in numerous other branches of digital image processing 3.1 Background As noted in the preceding paragraph, spatial domain techniques ... 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

... Fourier transform Fourier transform H(u, v)F(u, v) Pre- Post- processing processing f(xy) g(x, y) Input Enhanced image image FIGURE 4.5 Basic steps for filtering in the frequency domain ... age of the displayed image cannot be zero because the image has to have Trang 14 160 Chapter 4 ® Image Enhancement in the Frequency Domain FIGURE 4.6 Result of filtering the image in Fig 4.4(a) ... These comments are directly applicable to two-dimensional (and higher) functions Thus, for digital image processing, ex- istence of either the discrete transform or its inverse is not an issue The

Ngày tải lên: 08/05/2014, 15:46

... 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 ... 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 ... when performed by humans) image analysis Color image processing is divided into two major areas: full-color and pseudo- color processing In the first category, the images in question typically

Ngày tải lên: 08/05/2014, 15:59

... Trang 1Digital Image Processing, 2nd ed. www.imageprocessingbook.com© 2002 R C Gonzalez & R E Woods Chapter 7Wavelets and Multiresolution Processing Chapter 7Wavelets and Multiresolution Processing ... Trang 2Digital Image Processing, 2nd ed. www.imageprocessingbook.com© 2002 R C Gonzalez & R E Woods Chapter 7Wavelets and Multiresolution Processing Chapter 7Wavelets and Multiresolution Processing ... Trang 3Digital Image Processing, 2nd ed. www.imageprocessingbook.com© 2002 R C Gonzalez & R E Woods Chapter 7Wavelets and Multiresolution Processing Chapter 7Wavelets and Multiresolution Processing

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

... 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 ... pass- ing through the image The images in the second column of Fig 10.7 are the first-order derivatives of the images on the left (we discuss computation of the first and second image derivatives ... is to divide the original image into subimages and then utilize a different threshold to segment each subimage The key issues in this approach are how to subdivide the image and how to estimate

Ngày tải lên: 08/05/2014, 16:29

... coverage of digital image processing with an introduction to techniques for object recognition As noted in Section 1.1, we have defined the scope covered by our treatment of digital image processing ... respectively A region on the ground scanned in this manner produces four digital images, one image for each band If the images are registered, a condition which is generally true in practice, ... rotation is present abc FIGURE 12.9 (a) Image (b) Subimage (c) Correlation coefficient of (a) and (b) Note that the highest (brighter) point in (c) occurs when subimage (b) is coincident with the

Ngày tải lên: 08/05/2014, 16:48

... and input images Good signalstrength goes a long way toward reducing the effects of noise Another (sometimescomplementary) approach is to implement image processing techniques (e.g., imageaveraging) ... is morphological imageprocessing (Chapter 9) The material in this chapter begins a transition from methodswhose inputs and outputs are images to methods in which the inputs are images, butthe outputs ... chapters of this manual Teaching Features of the Book Undergraduate programs that offer digital image processing typically limit coverage toone semester Graduate programs vary, and can include

Ngày tải lên: 05/06/2014, 11:40

... 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 ... Vision, Graphics, and Image Processing, Vol 22, 1983, pp 287-300 6 R Lumia, "A New Three-Dimensional Connected Components Algorithm", Computer Vision, Graphics, and Image Processing, Vol 23, ... "shrinking" of binary images t o similarly connected representations t h a t have smaller foregrounds (i.e., fewer Ts) has found application as a fundamental preprocessing step in image processing T w

Ngày tải lên: 05/06/2014, 11:59

... number of real test images and by adapting image processing to each input image We are currently testing this approach on other applications in which the image typology, image processing operators, ... number of images a sequence of image processing operators involving numerous parameters? A second problem remains unsolved: how to find the rel-evant tuning and hence how to adapt image processing ... tuning itself which should enable adaptive image processing It implies relating input image content to the optimal tuning parameter for each par-ticular image These two steps are described in the

Ngày tải lên: 22/06/2014, 23:20

... 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 ... signal processing and image reconstruction In this case the feature extraction is decomposed into motion compensation and image reconstruction (Li et al., 2001) Multiple ISAR image reconstruction techniques

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 ... signal processing and image reconstruction In this case the feature extraction is decomposed into motion compensation and image reconstruction (Li et al., 2001) Multiple ISAR image reconstruction techniques

Ngày tải lên: 29/06/2014, 08:20

... number of HVS model based techniques for quantization table design have been proposed in the literature[3, 18, 41] Such techniques perform an analysis of the given image and arrive at a set of ... intended for the compression of both grayscale and color images In a grayscale image, there is a single “luminance” component However, a color image is represented with multiple components, and the ... give a reasonable rendition of the image In fact, just the DC coefficient can serve toessentially identify the contents of an image, although the reconstructed image contains Trang 1317.7 Alternative

Ngày tải lên: 01/07/2014, 10:43

... Handbook of Image and Video Processing Elsevier Academic Press, Burlington, MA, 2005 [26] P Moulin Multiscale Image Decomposition and Wavelets, Chapter 6, The Essential Guide to Image Processing ... IEEE Int Conf Image Process., Chicago, IL, October 1998. [22] D Le Gall and A Tabatabai Subband coding of digital images using symmetric short kernel filters and arithmetic coding techniques In ... quantization for color image compression Human Vision, Visual Processing, and Digital Display III, Proc SPIE, 1666:365–374, 1992. [4] A Antonini, M Barlaud, P Mathieu, and I Daubechies Image coding using

Ngày tải lên: 01/07/2014, 10:43

... advances in digital imaging technology, computational speed, storage capacity, and networking have resulted in the proliferation of digital images, both still and video As the digital images are ... though we use the term image quality, we are primarily interested in image fidelity, i.e., how close an image is to a given original or reference image This paradigm of image quality assessment ... Minkowski metric for image quality prediction (a) original image; (b) distorted image by adding a positive constant; (c) distorted image by adding the same constant, but with random sign Images (b) and

Ngày tải lên: 01/07/2014, 10:43

... 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

... (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? ... 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 ... first edition of Digital Image Processing with the following statement: “The field of image processing has grown considerably during the pastdecade with the increased utilization of imagery in myriad

Ngày tải lên: 14/08/2014, 01:22

... 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 ... 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 ... 1996 31 W Niblack, An Introduction to Digital Image Processing, Prentice Hall, Englewood Cliffs, NJ, 1985 32 W K Pratt, “Spatial Transform Coding of Color Images,” IEEE Trans Communication Technology,

Ngày tải lên: 14/08/2014, 01:22