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Three-dimensional reconstruction and characterization of human external shapes ...

This work presents a volumetric approach to reconstruct and characterize three-dimensional (3D) models of external anatomical structures from two-dimensional (2D) images. Volumetric methods represent the final volume using a finite set of 3D geometric primitives, usually designed as voxels. Thus, from an image sequence acquired around the object to reconstruct, the images are calibrated and the 3D models of the...

Reconstrução tridimensional de estruturas anatómicas externas utilizando método...

Neste trabalho pretende-se realizar a reconstrução e caracterização tridimensional (3D) de estruturas anatómicas externas a partir de imagens. Os métodos volumétricos caracterizam-se por representar o volume final por um conjunto finito de primitivas geométricas 3D, usualmente designadas por voxels. Assim, neste artigo, utilizando uma sequência de imagens adquiridas em torno de um objecto a reconstruir, calibro...

3D Reconstruction of External Anatomical Structures from Image Sequences

Three-dimensional (3D) reconstruction of objects from images has been one of the major topics in Computer Vision. Recently, volumetric methods have been successfully used in 3D reconstruction of objects with complex shapes. Comparing with stereo-based methods, they are more efficient in building 3D models of smooth objects [1]. They work in the object volumetric space and do not require a matching process betwe...

3D Object Reconstruction from Uncalibrated Images using an Off-the-Shelf Camera

Three-dimensional (3D) objects reconstruction using just bi-dimensional (2D) images has been a major research topic in Computer Vision. However, it is still a hard problem to address, when automation, speed and precision are required and/or the objects have complex shapes or image properties. In this paper, we compare two Active Computer Vision methods frequently used for the 3D reconstruction of objects from i...

Análise do método de calibração de câmaras proposto por Zhang

A calibração de uma câmara de imagem é um processo que permite estimar os parâmetros que definem a projecção de um ponto tridimensional (3D) do mundo num ponto bidimensional (2D) da imagem. Os referidos parâmetros incluem a geometria interna e óptica da câmara, assim como o seu posicionamento e orientação no espaço 3D. A utilização de câmaras de imagem devidamente calibradas possibilita a resolução de problemas...

3D Reconstruction of External Anatomical Structures using Computer Vision

Three-dimensional (3D) geometric reconstruction and characterization of external anatomical structures from images has been a major research topic in Computer Vision. However, it is still a complex problem to solve, when automation, speed and precision are required. 3D human models are normally built using 3D scanners. Although frequently expensive, they are easy to use and can provide 3D models of great accura...

3D Object Reconstruction from Uncalibrated Images using a Single Off-the-Shelf ...

Three-dimensional (3D) objects’ reconstruction using just bi-dimensional (2D) images has been a major research topic in Computer Vision. However, it is still a hard problem to solve, when automation, speed and precision are required and/or the objects present complex shapes and visual properties. In this paper, we compare two Active Computer Vision methods commonly used for the 3D reconstruction of object...

Photo-consistent object 3D reconstruction from images using a volumetric method

External Anatomical Shapes Reconstruction from Turntable Image Sequences using ...

Three-dimensional (3D) human body reconstruction and modeling from two-dimensional (2D) images is a topic of great interest and research but still remains a difficult problem to solve. Volumetric based methods are commonly used to solve this type of problem. With those methods, from a turntable image sequence of an object, a 3D model can be built. The final goal of the work presented in this paper is to reconst...

3D Volumetric Reconstruction and Characterization of Objects from Uncalibrated ...

Three-dimensional (3D) object reconstruction using only bi-dimensional (2D) images has been a major research topic in Computer Vision. However, it is still a complex problem to solve, when automation, speed and precision are required. In the work presented in this paper, we developed a computational platform with the main purpose of building 3D geometric models from uncalibrated images of objects. Simplicity an...