The Crossed-Slits (X-Slits) camera is defined by two nonintersecting slits, which replace the pinhole in the common perspective camera. Each point in space is projected to the image plane by a ray which passes through the point and the two slits. The X-Slits projection model includes the pushbroom camera as a special case. In addition, it describes a certain class of panoramic images, which are...

OBJECTIVE To define the clinical and radiological characteristics of the four most common presentations of temporomandibular dysfunction-myofascial pain (MFP), disc displacement with reduction (DDWR), disc displacement without reduction (DDWoR), and osteoarthrosis (OR)-and to identify the differences among them. MATERIAL AND METHODS The study comprised a series of 850 patients (121 males and ...

We introduce a new class of panoramic images, called polycentric panoramic images, which is a generalization from more specific classes such as single-center, multiple-center, or concentric panoramic images. This paper focuses on the derivation of an epipolar curve equation for polycentric panoramic images. The epipolar curve equation derived provides a unified approach for the epipolar geometr...

AIM The objective of this study was to compare the zone of simple, double and triple images in a dry infant cranium against an adult completely formed one when panoramic X-ray photography's were taken. STUDY DESIGN We took 96 panoramic X-ray photography's to a dry infant cranium placing a metallic spherical object of 8mm in different anatomical points for later to observe, identify and analys...

Dental rehabilitation treatment planning includes the qualitative evaluation of all available data (eg. Panoramic x-rays, periapical x-rays, models of dental arches, intra-oral photographs, periodontal and dental measurements, registrations of occlusal relationships etc.) and choice of the appropriate strategy. For this planning to be effective both accurate 3D geometrical information and prope...

Panoramic X-ray (PX) provides a 2D picture of the patient's mouth in panoramic view to help dentists observe invisible disease inside gum. However, it limited information compared with cone-beam computed tomography (CBCT), another dental imaging method that generates 3D oral cavity but more radiation dose and higher price. Consequently, is great interest reconstruct structure from image, which ...

Background and purpose: Accurate instance segmentation of teeth in panoramic dental X-rays is a challenging task due to variations tooth morphology overlapping regions. In this study, we propose new algorithm, for instance, the different X-rays. Methods: An model was trained using architecture Mask Region-based Convolutional Neural Network (Mask-RCNN). The data training, validation, testing wer...

As the sensor technology and image processing technology rapidly developped, more and more scholars have paid attention to the panoramic imaging technology. Panoramic imaging technology can be applied to military, medicine, security, etc. Panoramic imaging technology has became an important research topic in the field of computer vision. There are four current methods to obtain panoramic images...