When are two views inconsistent? First consider the case when the random strings used in these views are different, i.e. we have (R, b1, b2, ..., bq) and (R′, b1, b ′ 2, ..., b ′ q). These views are inconsistent, if for some i, j the bits bi and bj refer to the same location of the proof π, but bi 6= bj . Next consider the case when the random strings used in these views are the same, i.e. we h...

Plenoptic cameras are devices designed for sampling the light field entering their main lens. The raw information captured by the sensor can then be processed for rendering views at different focal distance or from different perspective. A plenoptic camera generates images with high resolution and high redundant information if compared with a conventional camera having resolution equal to that ...

We present a framework, motivated by rate-distortion theory and the human visual system, for optimally representing the real world given limited video resolution. To provide users with high fidelity views, we built a hybrid video camera system that combines a fixed wide-field panoramic camera with a controllable pan/tilt/zoom (PTZ) camera. In our framework, a video frame is viewed as a limited-...

Background: Measurement of absolute or differential renal function using radiotracers plays an important role in the clinical management of various renal diseases. Gamma camera quantitative methods in approximation of renal clearance may potentially be as accurate as plasma clearance methods. However some critical factors such as kidney depth and background counts are still troublesome in...

Camera manipulation is a hard problem since a graphics camera is defined by specifying 11 independent parameters. Manipulating such a high-dimensional space to accomplish specific tasks is difficult and requires a certain amount of expertise. We present an intuitive interface that allows novice users to perform camera operations in terms of the change they want see in the image. In addition to ...

Meta-model based development offers a promising way of managing the complexity of industrial scale software development by describing a system in terms of different ‘views’. These views can then be described as instances of a single meta-model. Such views are usually not disjoint and it is essential that they are shown to be consistent. A weakness of meta-modelling tools is the lack of support ...

We show that there is in general a two-way ambiguity for 2D projective reconstruction from three uncalibrated 1D views, independent of the number of point correspondences. The two distinct projective reconstructions are exactly related by a quadratic transformation with the three camera centers as fundamental points. Unique 2D reconstruction is possible only when the three camera centers are al...

Estimating the pose of a camera from a scene model is a challenging problem when the camera is in a position not covered by the views used to build the model, because feature matching is difficult. Several viewpoint simulation techniques have been recently proposed in this context. They generally come with a high computational cost, are limited to specific scenes such as urban environments or o...

We present a method for the definition of multiple views in 3D interfaces for computational steering. The method uses the concept of a point-based parametrizable camera object. This concept enables a user to create and configure multiple views on his custom 3D interface in an intuitive graphical manner. Each view can be coupled to objects present in the interface, parametrized to (simulation) d...

We address the problem of trajectory reconstruction of the COP(center of projection) of a moving camera from an uncalibrated image sequence. The internal parameters of the camera can be unknown and changing across views. Constraints come both from images of a static scene and from partial knowledge of the camera's trajectory. Constraints and implementation details are given in cases that the ca...