Creating of panoramic images is a common technique nowadays. The needed components are a sequence of overlapping digital images and a suitable stitching software. There are several software available for combining single images together just by few mouse clicks. They can also take care of the image distortions and adjust the radiometric differences so that the final image looks very consistent....

PURPOSE This study compared the SCGAs measured in three types of radiographic images (panoramic, CBCT panoramic-section, and CBCT cross-section images) with values measured using the protrusive occlusal record. MATERIALS AND METHODS SCGAs were measured in 20 patients on a semi-adjustable articulator using the protrusive interocclusal record. Panoramic and CBCT images were obtained. SCGAs were...

This work presents the implementation of a 3D reconstruction system capable of reconstructing a 360-degree scene with a single acquisition using a projection of patterns. The system is formed by two modules: the first module is a CCD camera with a parabolic mirror that allows the acquisition of catadioptric images. The second module consists of a light projector and a parabolic mirror that is u...

A novel pose normalization method, based on panoramic views and reflective symmetry, is presented. Initially, the surface of a 3D model is projected onto the lateral surface of a circumscribed cylinder, aligned with the primary principal axis of space. Based on this cylindrical projection, a normals’ deviation map is extracted and using an octree-based search strategy, the rotation which optima...

Interactive walkthrough applications require rendering an observed scene from a continuous range of target viewpoints. Toward this end, a novel approach is introduced that processes a set of input images to produce photorealistic scene reprojections over a wide range of viewpoints. This is achieved by (1) acquiring calibrated input images that are distributed throughout a target range of viewpo...

This thesis presents a new approach to the reconstruction of dental panoramic x-ray images with experimental results. The reduction of the x-ray dose that offers higher safety for the patient reduces diagnostic image quality. Inverse filtering often fails due to insufficient knowledge about the noise, which varies depending on the location. In order to overcome the aforementioned obstacles, the...

Introduction: Various computer assisted medical procedures such as dental implant, orthodontic planning, face, jaw and cosmetic surgeries require automatic quantification and volumetric visualization of teeth. In this regard, segmentation is a major step. Material and Methods: In this paper, inspired by our previous experiences and considering the anatomical knowledge of teeth and jaws, we prop...

Panoramic images have only been feasible if all contributing image patches share a common center of projection. Then, they can be consolidated into a single image using perspective transforms. In contrast to that, we propose a novel non-linear warping scheme which allows the merging of multi-perspective images, thus taking advantage of scattered cameras. Therefore, a polygonal cut is defined in...