In this paper, we present a novel method to generate a panoramic background image from a sequence of moving camera images. Our method is based on nonparametric statistics and robust model estimation using meanshift. Each frame is projected to panoramic space by homography matrix which is calculated by SURF(Speeded Up Robust Features) matching. To generate reliable panoramic background image, we...

PURPOSE The purpose of this review is to evaluate the possibility of panoramic radiography as a national oral examination tool. MATERIALS AND METHODS This report was carried out by review of the literatures. RESULTS Panoramic radiography has sufficient diagnostic accuracy in dental caries, periodontal diseases, and other lesions. Also, the effective dose of panoramic radiography is lower th...

OBJECTIVE To compare the mesiodistal root angulation of panoramic images generated from traditional panoramic tomography or cone-beam computed tomography (CBCT). METHODS CBCT scans and panoramic radiographs of 20 patients were collected. The Invivo- Dental 5.0 was separately applied for maxillary or mandibular panoramic image generation. The generation method was assorted by two head position...

PURPOSE The aim of this study was to assess and compare the diagnostic performance of panoramic and occlusal radiographs in detecting submandibular sialoliths. MATERIALS AND METHODS A total of 40 patients (20 cases and 20 controls) were included in this retrospective study. Cases were defined as subjects with a submandibular sialolith confirmed by computed tomography (CT), whereas controls di...

PURPOSE This study was performed to evaluate the reproducibility of panoramic radiographs of dentulous and edentulous patients. MATERIALS AND METHODS The reproducibility of panoramic radiographs was evaluated using the panoramic radiographs acquired from 30 anterior dentulous patients by using a common biting positioning device (dentulous group) and 30 anterior edentulous patients by using ch...

Constructing a rich and continuous visual experience requires computing specific details across views as well as integrating similarities across views. In this paper, we report functional magnetic resonance imaging (fMRI) evidence that these distinct computations may occur in two scene-sensitive regions in the brain, the parahippocampal place area (PPA) and retrosplenial cortex (RSC). Participa...

Linear array CCD-based panoramic cameras are being used also in measurement applications. The elegant image acquisition mode and the high information content of those images make them suitable candidates for quantitative image analysis. The best possible accuracy is acquired by a suitable sensor model and following the concept of network design. In our previous investigations we designed a sens...

In this article, we present some development results of a system that performs mosaicing (or mosaicking) of panoramic faces. Our objective is to study the feasibil­ ity of panoramic face construction in real-time. To do so, we built a simple acquisition system composed of 5 stan­ dard cameras which, together, can take simultaneously 5 views of a face at different angles. Then, we chose an eas­ ...

The aim of this study was to evaluate the accuracy of imaging methods for detection of apical periodontitis (AP). Imaging records from a consecutive sample of 888 imaging exams of patients with endodontic infection (1508 teeth), including cone beam computed tomography (CBCT) and panoramic and periapical radiographs, were selected. Sensitivity, specificity, predictive values, and accuracy of per...

In this paper some applications of motion analysis are investigated for a compact panoramic optical system (Panoramic Annular Lens). Panoramic image acquisition makes multiple or mechanically controlled camera systems needless for many applications. Panoramic Annular Lens’ main advantage to other omnidirectional monitoring systems is that it is a cheap, small, compact device with no external hy...