We introduce the occlusion camera: a non-pinhole camera with 3D distorted rays. Some of the rays sample surfaces that are occluded in the reference view, while the rest sample visible surfaces. The extra samples alleviate disocclusion errors. The silhouette curves are pushed back, so nearly visible samples become visible. A single occlusion camera covers the entire silhouette of an object, wher...

Getting 3D information from 2D images depends on the appropriate camera calibration of the internal and external CCD (Charge Couple Device) camera parameters. The photogrammetric camera calibration technique needs a set of world coordinates and their corresponding calibration object image coordinates as an input. During this work we developed an algorithm to detect the image coordinates of a ca...

For over a decade now oblique images are collected from airborne platforms on a regular basis. Several camera products have been presented from distinct camera vendors and their image products are well known. The UltraCam Osprey is the new oblique sensor by Microsoft / UltraCam Business Unit and was introduced into the market at the ASPRS 2013. This camera combines a metric nadir subsystem crea...

Obtaining an accurate vehicle position is important for intelligent vehicles in supporting driver safety and comfort. This paper proposes an accurate ego-localization method by matching in-vehicle camera images to an aerial image. There are two major problems in performing an accurate matching: (1) image difference between the aerial image and the in-vehicle camera image due to view-point and i...

Moving camera, such as PTZ (pan-tilt-zoom) camera, has been widely applied in visual surveillance system. However, it’s difficult to extract moving objects because of the dynamic background caused by the camera motion. In this paper, a novel framework for moving object segmentation exploiting two cameras collaboration is presented by combining background subtraction and image registration metho...

Features of leaves can be more precisely captured using 3D imaging. A 3D leaf image is reconstructed using two 2D images taken using stereo cameras. Reconstructing 3D from 2D images is not straightforward. One of the important steps to improve accuracy is to perform camera calibration correctly. By calibrating camera precisely, it is possible to project measurement of distances in real world to...

Panoramic cameras are used in aerial surveillance for the rapid coverage of large areas of terrain. Different Panoramic camera designs vary substantially, so that there is no such thing as a generic panoramic camera similar in generality to the pinhole model of a frame camera. This is true for instance for methods of forward motion compensation for which different methods are used. Nevertheless...

background: photon attenuation as an inevitable physical phenomenon influences on the diagnostic information of spect images and results to errors in accuracy of quantitative measurements. this can be corrected via different physical or mathematical approaches. as the correction equation in mathematical approaches is nonlinear, in this study a new method of linearization called ‘piece wise line...

A method for evaluating texture quality as shot by a camera is presented. It is shown that usual sharpness measurements are not completely satisfying for this task. A new target based on random geometry is proposed. It uses the so-called dead leaves model. It contains objects of any size at any orientation and follows some common statistics with natural images. Some experiments show that the co...

Time varying image analysis s Motion detection s Motion estimation s Egomotion and structure from motion Time-varying image analysis-2 Larry Davis The problems s Visual surveillance – stationary camera watches a workspace-find moving objects and alert an operator – moving camera navigates a workspace-find moving objects and alert an operator s Image coding – use image motion to perform more eff...