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 20 of 20 for “"Morphological operations"”.
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Image morphological processing
… important in today's technology. Mathematical Morphological operations, which are based on set theory, can extract object features by suitably shaped structuring elements. Mathematical Morphological filters are combinations of morphological operations that transform an image into a quantitative …
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Application of Computer Vision Techniques for Railroad Inspection using UAVs
… were detected. These steps were performed using morphological operations, filtering and intensity analysis. Once the tie plate was localized, the regions of interest on the plate were used to train a machine learning model to recognize missing spikes. Classification using SVM resulted in an …
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Automatic red blood cell counting based on particle area
… will be pre-processed in early stage using morphological operations and thresholding to obtain the images with good quality. Then, the RBC images will be classified based on the particle area size into single and multi-overlap cells. For counting the total number of the RBC, mathematical …
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Elements of number theory
… of DP, noun marking, agreement and suppletion. Morphological topics include the inventory of morphological operations, the featural basis of complex syncretisms, the difference between agreement and suppletion, whether features are privative or binary, and the nature of the Kiowa/Tanoan inverse. …
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On the interaction of portmanteaux and ellipsis
… not from having different kinds of ellipsis operations, but from different portmanteaux forming operations. I propose that indivisible portmanteaux are the result of either fusion or non-terminal insertion in a Late Insertion model of the postsyntax, while divisible portmanteaux are the …
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A framework based on Gaussian mixture models and Kalman filters for the segmentation and tracking of anomalous events in shipboard video
… features in the foreground are enhanced using morphological operations. Following this step, the anomalous indication is tracked between frames using Kalman filtering. Finally, gray level shape and motion features corresponding to the anomaly are subjected to principal component analysis and …
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Studies on neutron diffraction and X-ray radiography for material inspection
… dental lesions from dental X-ray is presented. Morphological operations, intensity profile analysis, automated seed point selection, region growing, feature extraction and neural network application are carried out to perform the job. Results show that the performance of the proposed method …
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Vehicle tracking and speed estimation for traffic surveillance
… the thresholded image. Combinations of several morphological operations were used to rectify whatever that is left. Blob analysis produces rectangles around the moving objects. The centroid of the rectangle is used to determine the location of each vehicle at a given frame. To make up for the …
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Intercomparison of medical image segmentation algorithms
… including thresholding, region growing, morphological operations and fuzzy c-means were applied to a selection of simulated and real brain MRI images, and the results compared.The project was realized by developing algorithms using the popular Matlab® software package. Qualitative …
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Signal processing and image restoration techniques for two-dimensional eddy current nondestructive evaluation
… on principal component analysis, and grayscale morphological operations to detect flaw signals. Another important part of the dissertation concerns image restoration techniques which can remove the blurring in impedance change images due to the diffusive nature of the eddy current testing. We …
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SIMD pipelined processor implemented on a FPGA
… were chosen to be able to perform binary operations to implement future morphological operations and to use the multiply and add operations for implementing MACs to perform convolution and filtering operations in future image processing applications. The board being used to verify the …
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Phonology-Morphology Interaction in Abha Arabic: Vowel Processes in Stratal Optimality Theory
… Moreover, two other vowel processes result after morphological operations take place, i.e. vowel lengthening and vowel shortening. Both processes take place after attaching different suffixes. In some cases, attaching two phonologically similar suffixes can either trigger a change in vowel length …
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Intra- and Inter-Seasonal Variability of Supra-Glacial 1 Streams and Lakes over the West Greenland Ice Sheet 2 from High-Resolution Satellite Optical Data
… math algorithms, threshold classifications, and morphological operations. I also provide depth estimations and corresponding volume estimations for the surface water features identified. The supra-glacial hydrology network over the study area was created both with and without lakes for each …
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A Deep Study of Fuzzy Implications
… essential in order that the fuzzification of the morphological operations of dilation, erosion, opening and closing obey similar properties as their algebraic counterparts. We find out that the adjointness between the conjunction $\mathcal{C}$ on the unit interval and the implication $I$ or the …
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The development of automatic and solar imaging techniques for the accurate detection, merging, verification and tracking of solar filaments
… filament by using statistical parameters and morphological operations. This detection technique gives the opportunity to develop an accurate spine extraction algorithm. Features including separation distance, orientation and average intensities are extracted and fed to a Neural Network (NN) …
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Inventorying trees in an urban landscape using small-footprint discrete return imaging lidar
… trees -- using airborne lidar data. Mathematical morphological operations followed by a marker-controlled watershed segmentation were found to perform well (r = 0.82 to 0.92) to delineate individual tree crowns in urban areas, especially when the trees occur in relatively isolated conditions. …
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Learning image enhancement and object localization using evolutionary algorithms
… phase, the obtained transform function of morphological chain is applied to untrained test images. The current thesis has three main parts as follows. In the rst part, genetic programming (GP) is employed to obtain an optimum transformation function. The GP utilizes one user-prepared gold …
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Solar activity detection and prediction using image processing and machine learning techniques
… including image transformation, segmentation and morphological operations are used to extract the limb objects and measure the associated properties. The pattern recognition techniques, such as Support Vector Machine (SVM), are applied to classify all the objects and generate a list of identified …
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Segmentation and Fracture Detection in CT Images for Traumatic Pelvic Injuries
… knowledge and computational techniques. First, morphological operations, image enhancement, and edge detection are performed for preliminary bone segmentation. The proposed algorithm then uses a template-based best shape matching method that provides an entirely automated segmentation process. …
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Robust facial expression recognition in the presence of rotation and partial occlusion
This research proposes an approach to recognizing facial expressions in the presence of rotations and partial occlusions of the face. The research is in the context of automatic machine translation of South African Sign Language (SASL) to English. The proposed method is able to accurately recognize …