Pan–tilt–zoom (PTZ) camera networks have an important role in surveillance systems. They have the ability to direct the attention to interesting events that occur in the scene. One method to achieve such behavior is to use a process known as sensor slaving: one (or more) master camera monitors a wide area and tracks moving targets so as to provide the positional information to one (or more) sla...

The integration of virtual objects into an image sequence captured by a moving camera is of high interest for special eeects in tv-and lm-productions. For the composition, the camera parameters of the real camera are estimated and transferred to a virtual camera. The estimation accuracy is very critical, because even small estimation errors can be recognised as localisation jitter of the insert...

The panorama-based annotation method described in this paper uses a panoramic image as the source of information about the positions of the annotations. It nds image alignment parameters between an input frame and the panoramic image and then maps the positions of annotations from the panoramic image to the input frame and displays the input frame overlaid with those annotations. Camera movemen...

The recent case of a 41-year-old British tourist, whose breast cancer was first suggested by a visit to a popular tourist attraction in Scotland, prompted us to consider how travel may serendipitously yield unforeseen diagnoses. The woman and her family were entertained in the thermal imaging camera room of the Camera Obscura and World of Illusions exhibit in Edinburgh when she noticed that her...

BACKGROUND We modified and reconstructed a high image quality portable non-mydriatic fundus camera and compared it with the tabletop fundus camera to evaluate the efficacy of the new camera in detecting retinal diseases. METHODS We designed and built a novel portable handheld fundus camera with telemedicine system. The image quality of fundus cameras was compared to that of existing commercia...

This paper considers image sensors and image quality in camera phones. A method to estimate the image quality and performance of an image sensor using its key parameters is presented. Subjective image quality and mapping camera technical parameters to its subjective image quality are discussed. The developed performance metrics are used to optimize sensor performance for best possible image qua...

Introduction and overview With a see-through augmented reality (AR) display the image in the display should be updated within a few milliseconds after a head movement of the observer, in order to maintain the virtual objects at a stable location in the visible world. In other words, the virtual camera has to mimic the head movements of the observer as close as possible. Allowed lags are in the ...

In this paper, we propose a new method that can remove view-disturbing noises from images of dynamic scenes. One of the thorny problems in outdoor surveillance by a camera is that adherent noises such as waterdrops or mud blobs on the protecting glass surface lens disturb the view from the camera. Therefore, we propose a method for removing adherent noises from images of dynamic scenes taken by...

Omnidirectional Vision Multiple images of a scene can be used to enhance the performance envelope of a scene captured by digital cameras. Increase image resolution and dynamic range are examples of such enhancements. Multi-camera systems are the foundation of emerging technologies such as free view point TV. The Panoptic system is a multi-focal omnidirectional camera which has all the attribute...

This chapter presents a high-level overview of image formation in a digital camera, highlighting aspects of potential interest in forensic applications. The discussion here focuses on image processing, especially processing steps related to concealing artifacts caused by camera hardware or that tend to create artifacts themselves. Image storage format issues are also discussed.