Browsing by Subject "Image processing"
Now showing items 1-20 of 331
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3D pose estimation using convolutional neural networks
(Universitat Politècnica de Catalunya, 2015-10)
Master thesis
Open AccessThe present Master Thesis describes a new Pose Estimation method based on Convolutional Neural Networks (CNN). This method divides the three-dimensional space in several regions and, given an input image, returns the ... -
3D reconstruction and recognition of objects using a kinect camera
(Universitat Politècnica de Catalunya, 2016-09)
Bachelor thesis
Open Access
Covenantee: Technische Universität MünchenThis project is based on the recent advances of 3D depth cameras, one being the Microsoft Kinect sensors. Nowadays, this technology enables to create really accurate 3D figures and scenes simplifying difficult tasks in ... -
3D shape from multi-camera views by error projection minimization
(2010)
Conference report
Open AccessTraditional shape from silhouette methods compute the 3D shape as the intersection of the back-projected silhouettes in the 3D space, the so called visual hull. However, silhouettes that have been obtained with background ... -
3D surface reconstruction in telepresence systems
(Universitat Politècnica de Catalunya, 2017-06)
Bachelor thesis
Open AccessRegistering three-dimensional models is possible thanks to the use of multi view captures or the readings provided by depth sensors, which can be applied in Augmented or Virtual Reality systems. In this sense, this project ... -
4D Cardiac MRI Segmentation and Surface Reconstruction
(Universitat Politècnica de Catalunya, 2008-10-10)
Master thesis (pre-Bologna period)
Open Access -
4D Cardiac Segmentation and Respiratory Motion Modeling of the Human Heart
(Universitat Politècnica de Catalunya, 2009-06)
Master thesis (pre-Bologna period)
Open AccessAtrial Fibrillation (AF) is a growing problem in modern societies with an enormous impact in both short term quality of life and long term survival. A recently developed promising approach to cure AF uses radiofrequency ... -
Accelerating super-resolution for 4K upscaling
(Institute of Electrical and Electronics Engineers (IEEE), 2015)
Conference report
Restricted access - publisher's policyThis paper presents a fast Super-Resolution (SR) algorithm based on a selective patch processing. Motivated by the observation that some regions of images are smooth and unfocused and can be properly upscaled with fast ... -
Accurate video object tracking using a region-based particle filter
(Universitat Politècnica de Catalunya, 2017-02-06)
Master thesis
Open AccessUsually, in particle filters applied to video tracking, a simple geometrical shape, typically an ellipse, is used in order to bound the object being tracked. Although it is a good tracker, it tends to a bad object ... -
A compact 3D representation for multi-view video
(2011)
Conference report
Restricted access - publisher's policyThis paper presents a methodology for obtaining a 3D reconstruction of a dynamic scene in multi-camera settings. Our target is to derive a compact representation of the 3D scene which is effective and accurate, whatever ... -
A comparative study between Elliptic Fourier and B-spline descriptors for object contour representation
(2014)
Conference report
Restricted access - publisher's policyIn this work, a comparative study between Elliptic Fourier and B-spline descriptors is carried out for comparing their efficiency in characterizing the contour shape of image objects. In both cases, the goal is to obtain ... -
A comparison of contrast enhancement methods for 2D radiographic images: Applied to patient positioning in proton therapy
(Universitat Politècnica de Catalunya, 2015-05-08)
Master thesis (pre-Bologna period)
Open Access
Covenantee: Université Catholique de LouvainDifferent methods for radiographic image contrast enhancement are studied, implemented and compared. The efficiency of the techniques in improving image contrast is then evaluated both on a subjective evaluation from ... -
Action recognition using the Rf Transform on optical flow images
(SCITEPRESS, 2017)
Conference report
Open AccessThe objective of this paper is the automatic recognition of human actions in video sequences. The use of spatio-temporal features for action recognition has become very popular in recent literature Instead of extracting ... -
Adaptive Filter Solution For Processing Lidar Returns: Optical Parameter Estimation
(OPTICAL SOC AMER, 1998-01-31)
Article
Open AccessJoint estimation of extinction and backscatter simulated profiles from elastic-backscatter lidar return signals is tackled by means of an extended Kalman filter (EKF). First, we introduced the issue from a theoretical point ... -
A digital image processing method for urban scenes brightness assessment
(Centre de Política del Sòl i Valoracions - Universitat Politècnica de Catalunya, 2016-10)
Article
Open AccessThe appearance of the city is strongly linked to many aspects such as climate, culture and sociological background. In cities with a prevalence of clear skies, one of the determining aspects is the climatic condition, which ... -
A discrete labelling approach to attributed graph matching using SIFT features
(2010)
Conference report
Open AccessLocal invariant feature extraction methods are widely used for image-features matching. There exist a number of approaches aimed at the refinement of the matches between image-features. It is a common strategy among these ... -
Algoritmos de reconstrucción de escenas 3D paralelizados en GPU para aplicaciones en tiempo real
(Universitat Politècnica de Catalunya, 2010-01-21)
Master thesis (pre-Bologna period)
Open AccessSe presenta una adaptación de algoritmos de reconstrucción 3D en escenarios multi-cámara a un entorno multiprocesador que permita aprovechar la capacidad de cálculo de los nuevos procesadores gráficos (GPUs), con el objetivo ... -
Allowing content-based functionalities in segmentation-based coding schemes
(1997-08)
Article
Open AccessThis paper deals with the use of the segmentation tools and principles presented in [10] and [13] for allowing content-based functionalities. In this framework, means for supervised selection of objects in the scene are ... -
An adaptive pyramid image coding system
(Institute of Electrical and Electronics Engineers (IEEE), 1988)
Conference report
Open AccessThe Laplacian Pyramid is a new and efficient method for image encoding. The method is of increasing interest as band-pass pyramids and multiresolution images are being used in other image processing applications. The Pyramid ... -
Anàlisi SAR per missions de rescat utilitzant vehicles aeris no tripulats
(Universitat Politècnica de Catalunya, 2016-10)
Master thesis (pre-Bologna period)
48 months embargo -
Análisis de no estacionariedades en la interpolación de imágenes. Aplicación a codificación piramidal y zoom
(1991)
Conference report
Open AccessIn some applications of digital image processing the fact that an image is a non estacionary signal can cause some undesirable effects. That is the case of block effect in transform coding, or destructive effects on contours ...
