spatial filtering in digital image processing ppt

... sk, …, sL-1} into which the input intensity values are correspondingly mapped (Figure 1) Thus, each pixel-intensity in the original image is mapped into a new intensity by indexing into this table ... by teaching intensity transformation as a point-processing transformation by which image pixel intensities are transformed into a different set of intensities based on input-out mappings Intensity ... intensity-quantization in use k i=0 Thus, c(k) =∑h(i) 3.2 Intensity Transformation Intensity transformation in the context of digital image processing is a point (pixel) processing technique or operation in which

Ngày tải lên: 30/10/2022, 17:25

... Histogram Processing and Function Plotting Intensity transformation functions based on information extracted from image intensity histograms play a central role in image processing, in areas such ... introduced at the beginning of this section, the function in Fig 3.4(a) has the form where r denotes the intensities of the input image, s the corresponding inten-sity values in the output image, ... Trang 1Digital Image Processing Trang 2Library of Congress Control Number: 2009902793Printed in the United States of America Trang 3and Spatial Filtering Preview The term spatial domain refers

Ngày tải lên: 28/04/2014, 10:26

... Chapter 4 # Image Enhancement in the Frequency Domain Basics of filtering in the frequency domain Filtering in the frequency domain is straightforward It consists of the fol- lowing steps: - ... Enhanced image image FIGURE 4.5 Basic steps for filtering in the frequency domain of this basic theme The important point to keep in mind is that the filtering process is based on modifying the ... lowpass filtering the image in Fig 44(a) (c) A two-dimensional highpass filter function (d) Result of highpass filtering the image in Fig 4.4(a) Correspondence between Filtering in the Spatial

Ngày tải lên: 08/05/2014, 15:46

... combining these colors for print- ing produces a muddy-looking black So, in order to produce true black (which is the predominant color in printing), a fourth color, black, is added, giving rise ... geometrical formulas describing the reasoning outlined in the preceding discussion The key point to keep in mind regarding the cube arrangement in Fig 6.12 and its corresponding HSI color space is ... full-color images are handled for a variety of image processing tasks Full-color image processing ap- proaches fall into two major categories In the first category, we process each component image individually

Ngày tải lên: 08/05/2014, 15:59

... 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 ... Multiresolution Processing Trang 4Digital Image Processing, 2nd ed. www.imageprocessingbook.com© 2002 R C Gonzalez & R E Woods Chapter 7Wavelets and Multiresolution Processing Chapter 7Wavelets ... Multiresolution Processing Trang 5Digital Image Processing, 2nd ed. www.imageprocessingbook.com© 2002 R C Gonzalez & R E Woods Chapter 7Wavelets and Multiresolution Processing Chapter 7Wavelets

Ngày tải lên: 08/05/2014, 15:59

... practical aspects of image compression, including both the principal techniques in use and the standards that have been instrumental in increasing the scope and acceptance of this discipline Com- pression ... pixel value in the image In general, an observer searches for distinguishing features such as edges or textural regions and mentally combines them into recognizable groupings The brain then correlates ... visual quality of the two coded images might result in a marginal rating for the image in Fig 8.4(b) and a passable rating for that in Fig 8.4(c) a \ 1 Excellent An image of extremely high quality,

Ngày tải lên: 08/05/2014, 16:10

... 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 defined in Section ... and b’ the intercept of the line containing both (Xs y,) and (x;, y)) in the xy-plane In fact, all points contained on this line have lines in pa- rameter space that intersect at (a’, b’) Figure ... slope-intercept represen- tation Instead of straight lines, however, the loci are sinusoidal curves in the p@-plane As before, Q collinear points lying on a line x cos 6; + ysin6; = p; yield Q sinusoidal

Ngày tải lên: 08/05/2014, 16:29

... training patterns, and a set of such patterns from each class is called a training set The process by which a training set is used to obtain decision func- tions is called learning or training In ... great interest in these machines, called perceptrons, was the development of mathematical proofs showing that perceptrons, when trained with linearly sep- arable training sets (i.e., training sets ... 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

... of image processing in which both the inputs and outputs of those processes are images In the scope of a senior course, this usually means the material contained in Chapters through Depending ... morphological image processing (Chapter 9) The material in this chapter begins a transition from methods whose inputs and outputs are images to methods in which the inputs are images, but the ... most interesting aspects of a course in digital image processing is the pictorial 190 Chapter 12 Problem Solutions training patterns of class ! have been multiplied by ¡1 If the classes are linearly

Ngày tải lên: 05/06/2014, 11:40

... Using Java packages the original material into a series of compact volumes, thereby supporting a flexible sequence of courses in digital image processing Tailoring the contents to the scope of individual ... “vocabulary” of digital image processing, starting from the basic concepts and elementary properties of digital images through simple statistics and point operations, fundamental filtering techniques, ... and Image Processing 4, 248–270 (1975) 250 Bibliography [11] B Eckel “Thinking in Java” Prentice Hall, Englewood Cliffs, NJ, fourth ed (2006) Earlier versions available online [12] N Efford “Digital

Ngày tải lên: 05/06/2014, 11:55

... symbolic image In this case, t h e general processing paradigm includes segmenting t h e original image, determining t h e connected regions of pixels having each Trang 7t h e regions, and applying ... base of X initially contains a single black seed pixel, t h e base of Y initially contains t h e binary image t o be labeled and t h e pixels in t h e remaining nodes of X a n d Y are initially ... fundamental preprocessing step in image processing T w o forms of such shrinking have been of greatest interest: (1) T h e image is transformed t o a "topologically equivalent" image t h a

Ngày tải lên: 05/06/2014, 11:59

... possibilities offered by digital image processing algorithms in various fields Digital image processing is quite a multidisciplinary field, and therefore, the chapters in this book cover a wide ... December, 2011 Printed in Croatia A free online edition of this book is available at www.intechopen.com Additional hard copies can be obtained from orders@intechweb.org Digital Image Processing, Edited ... appearing in the field In Fig.16 the number of laser probes increased to 11 for tracing mode It could be seen that as the number of laser probes increases the number of extra crossing points also increases

Ngày tải lên: 28/06/2014, 08:20

... possibilities offered by digital image processing algorithms in various fields Digital image processing is quite a multidisciplinary field, and therefore, the chapters in this book cover a wide ... December, 2011 Printed in Croatia A free online edition of this book is available at www.intechopen.com Additional hard copies can be obtained from orders@intechweb.org Digital Image Processing, Edited ... appearing in the field In Fig.16 the number of laser probes increased to 11 for tracing mode It could be seen that as the number of laser probes increases the number of extra crossing points also increases

Ngày tải lên: 29/06/2014, 08:20

... original image slightly, to make the edges clearer. (a) The original image (b) Its edge image Figure 1.4: Finding edges in an image Removing detail from an image. For measurement or counting ... medical imaging. Even if the picture is not immediately recognizable, it will not be just a random blur. 1.2 What is image processing? Image processing involves changing the nature of an image in order ... shown in figure 1.14 However, such a plot is of limited use to us in terms of image. .. subdividing an image into constituent parts, or isolating certain aspects of an image: finding lines,

Ngày tải lên: 23/07/2014, 00:24

... 424 Binary Image Shrinking, Thinning, Skeletonizing and Thickening, 431 Binary Image Generalized Dilation and Erosion, 4 42 Binary Image Close and Open Operations, 453 Gray Scale Image ... Digital Image Processing is offered to the image processing community Why? One reason is because advances in the theoretical aspects of image processing technology continue at a ... Linear Processing Exercises, 725 Image Enhancement... 623 CONTENTS 19 Image Detection and Registration 19.1 19 .2 19.3 19.4 651 Template Matching, 651 Matched Filtering of Continuous Images,

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 ... 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 (4.1-1) composed of an infinite array ... ideal image is bandlimited to convolution of Eq 4.1-4 yields A continuous image field may be obtained from the image samples of bylinear spatial interpolation or by linear spatial filtering of

Ngày tải lên: 14/08/2014, 01:22

... representa-in subsequent sections 6.2 GENERALIZED TWO-DIMENSIONAL LINEAR OPERATOR A large class of image processing operations are linear in nature; an output imagefield is formed from linear combinations ... SAMPLED IMAGE SUPERPOSITION AND CONVOLUTION Many applications in image processing require a discretization of the superpositionintegral relating the input and output continuous fields of a linear ... boundary definitions are generallyemployed for image enhancement filtering Finally, the centered, zero boundary def-inition is used for the computation of spatial derivatives in edge detection In thisapplication,

Ngày tải lên: 14/08/2014, 02:20

... complement numbering (a) Linear image scaling (b) Linear image scaling with clipping (c) Absolute value scaling FIGURE 10.1-2 Image scaling methods  250 IMAGE ENHANCEMENT (a) Linear, full range, ... image analysis Digital Image Processing: ... and present methods of point and spatial image restoration The final chapter of this part considers geometrical image modification 10 IMAGE ... Processing, ” Report USCIPI 950 , University Southern California, Image Processing Institute, January 1980 PART 4 IMAGE IMPROVEMENT The use of digital processing techniques for image

Ngày tải lên: 14/08/2014, 02:20

... Median Filtering Based on Space Filling Curves,” IEEE Trans Image Processing, 6, 7, July 1997, 1025–1037. 44 R Lukac et al., “Vector Filtering for Color Imaging,” IEEE Signal Processing Magazine, ... compensation of spatial luminance variations 12.2 CONTINUOUS IMAGE SPATIAL FILTERING RESTORATION For the class of imaging systems in which the spatial degradation can be modeled by a linear-shift-invariant ... in most applications FIGURE 12.1-4 Point luminance correction of an image display. FIGURE 12.1-5 Measured image display response. B˜ g B C˜ max C˜min– Trang 32CONTINUOUS IMAGE SPATIAL FILTERING

Ngày tải lên: 14/08/2014, 02:20

... polynomial spatial warping on the mandrill_mon image 404 GEOMETRICAL IMAGE. .. warping of an image In this example, the mapping of control points is indicated by the graphics overlay The spatial ... spatial warping techniques discussed in this section have application for two types of geometrical image manipulation: image mosaicing and image blending Image mosaicing involves the spatial ... types of image processing, such as coding, restoration and enhancement, in that the ultimate product of an image analysis... in Multipass Image Rotations,” IEEE Trans Image Processing, IP-3,

Ngày tải lên: 14/08/2014, 02:20