Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 15 of 15 for “"rotation invariant"”.
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Rotation invariant real-time face detection and recognition system
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2001.
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2D image classification and alignment in single-particle Cryo-EM
… viewing directions but with different in-plane rotations; (2) rotation alignment of images in each class. To perform rotation-invariant classification and rotation alignment, we first propose a non-uniform discrete Fourier transform (NUDFT) to calculate the Fourier transform of an image in polar …
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Approximating, Editing, and Processing Free -Form Motion
I have also developed a simple but powerful rotation-invariant differential mesh representation that can easily accommodate any connected triangle mesh (including non-manifold and non-orientable surfaces). This representation is useful not only for free-form motion processing but also for general …
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Splines and local approximation of the earth's gravity field
… foundation and the construction procedure for rotation-invariant splines on Euclidean spaces, splines on the circle, and splines on the sphere and harmonic outside the sphere. Spherical splines and surface splines such as multi-conic functions, Hardy's multiquadric functions, pseudo-cubic …
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Nearest neighbor search for cyro-electron microscopy images
… the image dataset by generating more planar rotation copies for each projection image in a way that allows more image candidates under the same view observable. It shows that with image augmentation, the accuracies of all four methods increase. The LSH methods provide rather good performances …
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Tumour Localisation in Histopathology Images
… in tissue by adopting superpixel properties in a rotation invariant manner, suitable for histopathology images. To incorporate essential contextual information, methods which utilise posterior tumour probabilities in an iterative manner are proposed. Results showed pixel-level agreements between …
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The investigation of correlator systems utilizing object and frequency space filters
… aspect of this work is the development of a rotationally invariant optical correlator.<br/><br/>Optical correlation systems are investigated for the purpose of high speed, high discriminant and distortion invariant pattern recognition. A photorefractive joint transform correlator (JTC) using …
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CARAD: Computer-aided Analysis of Radio Astronomy Data
… COSFIRE filters, which offer a lightweight, rotation-invariant, and interpretable framework for feature extraction that achieves performance comparable or superior to deep learning models while requiring significantly fewer computational resources. This work presents a comprehensive …
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Novel Methods of RF-induced Heating Assessment and Heating Reduction Techniques for Active Implantable Medical Devices in MRI
… and faster by using a group of optimized rotation-invariant pathways on a circular plate in a standard rectangular phantom. Second, the TFs of AIMD at 1.5 T and 3 T can be developed and validated by applying a series of highly orthogonal pathways in a novel electromagnetic field generator. …
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Techniques for Content-based Image Characterization in Wavelets Domain
… The model is applied in order to design a novel rotation-invariant texture descriptor. All of the aforementioned techniques are also designed to bridge the gap between texture-based image retrieval and image compression by using appropriate compatible design parameters. The final part introduces …
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Effective methods for manipulating and rendering skinned meshes
… detail scale and by identifying suitable rotation-invariant quantities for regression. The run-time components are implemented efficiently on GPU to achieve an overall real-time performance on high-resolution cloth models. In the second part, we focus on real-time rendering methods for …
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Adaptive nonlocal and structured sparse signal modeling and applications
… a methodology for learning, dubbed Flipping and Rotation Invariant Sparsifying Transforms (FRIST), to better represent natural images that contain textures with various geometrical directions. The proposed alternating FRIST learning algorithm involves efficient optimal updates. We provide a …
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Entwicklung, Validierung und Anwendung einer neuen translations- und rotationsinvarianten 3D-QSAR-Methodik
… (MaP). Die Methode ist gegenüber Translation und Rotation invariant, d. h. eine Überlagerung der Moleküle, wie sie zum Beispiel für CoMFA nötig ist, entfällt. MaP basiert auf der Charakterisierung der Moleküle nach ihrer Fähigkeit Wasserstoffbrücken auszubilden, sowie ihrer Hydrophobie / …