acton, ray - biomedical image analysis - tracking (morgan & claypool, 2005)

[...]... advances in the target -tracking arena, including multi-target 3 P1: IML/FFX P2: IML/FFX MOBK00 7-0 1 Acton QC: IML/FFX MOBK007-Acton.cls 4 T1: IML December 26, 2005 20:38 BIOMEDICAL IMAGE ANALYSIS: TRACKING tracking techniques Biomedical examples are used to demonstrate the implementation of the particle filter and associated methods Chapter 5 looks at shape-based methods for biomedical image analysis The first... experts in biomedical image analysis P1: IML/FFX P2: IML/FFX MOBK00 7-0 1 Acton QC: IML/FFX MOBK007-Acton.cls T1: IML December 26, 2005 20:38 INTRODUCTION Q: Does the book provide a balanced slate of biomedical applications that encompasses the entire spectrum of biomedical imaging? A: In a nutshell, no The examples are processing and analysis techniques given in this book emerge mainly from cell tracking. .. MOBK00 7-0 2 Acton QC: IML/FFX MOBK007-Acton.cls 24 T1: IML December 26, 2005 20:39 BIOMEDICAL IMAGE ANALYSIS: TRACKING (b) (a) (c) FIGURE 2.9: (a) GVF force field on the circle image of Fig 2.1(a) (b) Snake evolution via GVF Same initial contour as Fig 2.5(a) is used here (c) GVF snake evolution on leukocyte image Same initial contour as Fig 2.5(b) is used here P1: IML/FFX P2: IML/FFX MOBK00 7-0 2 Acton... turn our attention to the application of tracking rolling leukocytes observed in vivo for this case study Although the tracking method described in this section is tailored to the rolling leukocyte tracking, this approach may also P1: IML/FFX P2: IML/FFX MOBK00 7-0 2 Acton QC: IML/FFX MOBK007-Acton.cls 26 T1: IML December 26, 2005 20:39 BIOMEDICAL IMAGE ANALYSIS: TRACKING FIGURE 2.10: Six frames from an... Employment of the active contour for cell tracking is addressed next In this context, we illustrate several external forces for active contours—the external P1: IML/FFX P2: IML/FFX MOBK00 7-0 2 Acton QC: IML/FFX MOBK007-Acton.cls 6 T1: IML December 26, 2005 20:39 BIOMEDICAL IMAGE ANALYSIS: TRACKING forces that guide the active contour to reside on the desired image edges Here, the minimax method for determining... image intensity is unity Figure 2.6(a) shows an example distance potential surface Once we construct D(x, y), we compute the distance potential force field (−Dx (x, y), −Dy (x, y)) [Note the appearance of the negative sign: since the P1: IML/FFX P2: IML/FFX MOBK00 7-0 2 Acton QC: IML/FFX MOBK007-Acton.cls 20 T1: IML December 26, 2005 20:39 BIOMEDICAL IMAGE ANALYSIS: TRACKING FIGURE 2.6: (a) A binary image: ... The biomedical world is far more unpredictable and more difficult to constrain Finally, we must have knowledge of what is doing the imaging, in other words, the modalities These modalities include ultrasound, microscopy, CT, MRI, PET/SPECT, X -Ray, EIT, and OPT Q: What if I’m interested in tracking but not biology or medicine? A: This book could still be a valuable resource The title Biomedical Image Analysis: ...P1: IML/FFX P2: IML/FFX MOBK00 7-0 1 Acton QC: IML/FFX MOBK007-Acton.cls 2 T1: IML December 26, 2005 20:38 BIOMEDICAL IMAGE ANALYSIS: TRACKING objects that can change contrast, that have subtle, ambiguous boundaries, that can be occluded, and that are imaged in the presence of significant clutter, noise and speckle In military imaging we have... treatment of snakes in this book, however, is directed toward the important task of biomedical tracking We believe the most straightforward way to communicate the snake tracking approach is to use an application-based case study Tracking is defined here as the task of following an object through a temporal sequence of images Tracking in general is composed of two subtasks—object detection and correspondence... updates P1: IML/FFX P2: IML/FFX MOBK00 7-0 2 Acton QC: IML/FFX MOBK007-Acton.cls 14 T1: IML December 26, 2005 20:39 BIOMEDICAL IMAGE ANALYSIS: TRACKING The edge strength terms f x and f y are as follows: f x (x, y) = ∂ f (x, y) ∂x (2.10) f y (x, y) = ∂ f (x, y) ∂y (2.11) and ( f x (x, y), f y (x, y)), or in shorthand notation ( f x , f y ), forms a vector field over the image domain that acts as an external . permission of the publisher. Biomedical Image Analysis: Tracking Scott T. Acton and Nilanjan Ray www.morganclaypool.com ISBN: 1-5 9829 0-1 8-5 Library of Congress Cataloging-in-Publication Data First. IML MOBK007-FM Acton MOBK007-Acton.cls December 26, 2005 20:46 BIOMEDICAL IMAGE ANALYSIS: TRACKING Scott T. Acton and Nilanjan Ray University of Virginia Alan C. Bovik, Series Editor M &C Morgan & Claypool. T1: IML MOBK00 7-0 1 Acton MOBK007-Acton.cls December 26, 2005 20:38 4 BIOMEDICAL IMAGE ANALYSIS: TRACKING tracking techniques. Biomedical examples are used to demonstrate the im- plementation