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This book constitutes the refereed proceedings of the 11th International Workshop on Biomedical Image Registration, WBIR 2024, held in conjunction with the 27th International conference on Medical Image Computing and Computer Assisted Intervention, MICCAI 2024, in Marrakesh, Morocco in October 2024. The 28 full papers presented in this book were carefully reviewed and selected from 32 submissions. These papers have been categorized under the following topical sections: Architectures; Robustness; Atlas/ Fusion; Feature/ Similarity Learning & Efficiency.

Image registration. --- Imaging systems in medicine

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Medical imaging is fundamental to modern healthcare, and its widespread use has resulted in creation of image databases. These repositories contain images from a diverse range of modalities, multidimensional as well as co-aligned multimodality images. These image collections offer opportunity for evidence-based diagnosis, teaching, and research. Advances in medical image analysis over last two decades shows there are now many algorithms and ideas available that allow to address medical image analysis tasks in commercial solutions with sufficient performance in terms of accuracy, reliability and speed. Content-based image retrieval (CBIR) is an image search technique that complements the conventional text-based retrieval of images by using visual features, such as color, texture, and shape, as search criteria. This book emphasizes the design of wavelet filter-banks as efficient and effective feature descriptors for medical image retrieval. Firstly, a generalized novel design of a family of multiplier-free orthogonal wavelet filter-banks is presented. In this, the dyadic filter coefficients are obtained based on double-shifting orthogonality property with allowable deviation from original filter coefficients. Next, a low complex symmetric Daub-4 orthogonal wavelet filter-bank is presented. This is achieved by slightly altering the perfect reconstruction condition to make designed filter-bank symmetric and to obtain dyadic filter coefficients. In third contribution, the first dyadic Gabor wavelet filter-bank is presented based on slight alteration in orientation parameter without disturbing remaining Gabor wavelet parameters. In addition, a novel feature descriptor based on the design of adaptive Gabor wavelet filter-bank is presented. The use of Maximum likelihood estimation is suggested to measure the similarity between the feature vectors of heterogeneous medical images. The performance of the suggested methods is evaluated on three different publicly available databases namely NEMA, OASIS and EXACT09. The performance in terms of average retrieval precision, average retrieval recall and computational time are compared with well-known existing methods.

Image processing. --- Biomedical engineering. --- Materials --- Imaging systems. --- Image Processing. --- Medical and Health Technologies. --- Imaging Techniques. --- Analysis.

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Sismologie. --- Imagerie sismique. --- Tectonique. --- Seismology. --- Imaging systems in seismology. --- Geology, Structural.

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Photoacoustic imaging (also called optoacoustic imaging) is a hybrid modality based on the generation and detection of ultrasound in response to optical absorption of tissue. It combines advantages from both optical and ultrasound imaging, providing functional, molecular and microstructural information of tissue at scalable spatial resolution and depth. This technology has undergone exponential growth over the last two decades, and it is now widely viewed as one of the most exciting biomedical imaging modalities. This book introduces the technology and applications with chapters written by leading international research groups. It will be of interest to a wide range of audiences, including postgraduate students and researchers in physics and engineering as well as biomedical and clinical sciences. Chapters 8, 16, 17 and 21 are available open access under a Creative Commons Attribution 4.0 International License via link.springer.com.

Biophysics. --- Acoustics. --- Materials --- Imaging systems. --- Nuclear medicine. --- Bioanalysis and Bioimaging. --- Imaging Techniques. --- Nuclear Medicine. --- Analysis.

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This book covers speckle image formation using a variety of modulated apertures. The central theme revolves around theoretical analyses, specifically the calculation of impulse responses or Point Spread Functions (PSFs) corresponding to these apertures. These calculations provide crucial insights into the resolution inherent in the resulting speckle images. The book begins with an examination of the recognition of the direction of new apertures from elongated speckle images, setting the stage for subsequent discussions. The theoretical analyses extend to diverse aperture designs, including Gaussian, graded-index, and modulated apertures. The book delves into the nuanced dynamics of contrast in speckle images, exploring the Voigt distribution and the effects of modulation on contrast. In addition to aperture-centric discussions, the book addresses the processing of the formed speckle images. The chapters impart a comprehensive understanding of speckle imaging, encompassing discrimination in microscopy using digital speckle images, the utilization of concentric hexagonal pupils, and the exploration of irregular apertures. The book culminates in a detailed exploration of speckle imaging in the context of an annular Hermite Gaussian laser beam. Overall, this book serves as a valuable resource for researchers and academics seeking a profound exploration of speckle image formation, modulation, and processing across a spectrum of apertures and theoretical frameworks.

Microscopy. --- Geometrical optics. --- Wave theory of light. --- Materials --- Imaging systems. --- Imaging systems in biology. --- Image processing. --- Optical Microscopy. --- Classical Optics, Geometric and Wave optics. --- Imaging Techniques. --- Biological Imaging. --- Image Processing. --- Analysis.