Conventional video cameras have limited elds of view that make them restrictive in certain vision applications. A catadioptric sensor uses a combination of lenses and mirrors placed in a carefully designed con guration to capture a much wider eld of view. In particular, the shape of the mirror must be selected to ensure that the complete catadioptric system has a single e ective viewpoint, whic...

Synthetic aperture radar (SAR) allows all-weather, day-and-night surface surveillance and has the ability to detect, classify and geolocate objects at long stand-off ranges. Bistatic SAR, in which the transmitter and the receiver are on separate platforms, is seen as a potential means of countering the vulnerability of conventional monostatic SAR to electronic countermeasures, particularly dire...

due to the tilt of the platform carrying the synthetic aperture radar(sar), the image formation algorithms(like rda) can not yield to good quality images from the ground. therefore, it is convenient to use a two-step approach for motion compensation in image formation algorithms. in this paper, using an approximated linear model for the motion error and the impact of range compression step of r...

Every year, millions of poor grey scale reproductions of colour images are made. Through our research we aim to make millions more good grey scale prints. It is now increasingly common to capture images using colour digital cameras and display them on colour monitors or using colour inkjet printers. However, there are still many occasions when colour images are reproduced in greyscale: the use ...

In this paper, the problem of print quality inspection on pharmaceutical capsules is addressed. Good print quality, a property that makes the print legible, is of utmost importance for identification and preventing mix-ups among various types of capsules. Spatial distortion obtained at image formation process, where a 3-D surface gets projected onto a 2-D image plane, causes print appearance va...

An OMNIVIEWS catadioptric camera combines a curved mirror with a variant resolution imaging sensor. The goal is to obtain panoramic images with large view angle, suitable image formation geometry, and controlled resolution variation across the field of view. We present simulations of an OMNIVIEWS camera and compare them with real images taken by a combination of a hyperbolic mirror with a log-p...

Segmentation based on color, instead of intensity only, provides an easier distinction between materials, on the condition that robustness against irrelevant parameters is achieved, such as illumination source, shadows, geometry and camera sensitivities. Modeling the physical process of the image formation provides insight into the effect of different parameters on object color. In this paper, ...

Objective: Binge eating disorder is associated with problems in interpersonal and occupational relationships, quality of life, and sometimes weight gain. Many factors affect the formation of these disorder symptoms. The current study examined the relationship between body image victimization experiences and the severity of binge eating symptoms mediated by body image shame and self-criticism. ...