Fisheye lenses are powerful tools for visualizing dense data while simultaneously providing focus and context. Unfortunately, target acquisition in fisheye lenses is complicated by magnification effects that make it seem as if objects in the fisheye view are moving when the view is changed. These problems become even more evident with touchscreen–controlled fisheye views, where there is no cont...

Fisheye interfaces give access to a large information structure by providing users with both local detail and global context. Despite decades of research in fisheye interfaces, their design and use are not well understood. To foster a discussion of fisheye views and their theoretical foundations, we identify five challenging areas in designing fisheye interfaces.

Fisheye lenses are often used to enlarge the field of view (FOV) of a conventional camera. But the images taken with fisheye lenses have severe distortions. This paper proposes a novel calibration method for fisheye lenses using images of space lines in a single fisheye image. Since some fisheye cameras’ FOV are around 180 degrees, the spherical perspective projection model is employed. It is w...

This paper introduces an intermediate virtual representation, called ideal fisheye image, which obeys the ideal simple projection without camera distortion. By using a look-up-table from the ideal fisheye image to the input fisheye image with distortion, a view-direction-free perspective display can be generated fast in comparison with the method of solving a set of nonlinear equations of camer...

The paper describes a geometric projection model for fisheye lenses and presents results of the calibration of fisheye lens camera systems based on it. For fisheye images the real projection model does not comply with the central perspective. In addition, the lenses are subject to considerable distortions. The fisheye lens projection follows an approximately linear relation between the incidenc...

This paper evaluates refinements to existing eye pointing techniques involving a fisheye lens. We use a fisheye lens and a video-based eye tracker to locally magnify the display at the point of the user’s gaze. Our gaze-contingent fisheye facilitates eye pointing and selection of magnified (expanded) targets. Two novel interaction techniques are evaluated for managing the fisheye, both dependen...

This paper presents a novel fisheye-lens-based photoacoustic (PA) system. In conventional PA systems, mechanical motors are utilized to obtain the target information due to the small fields of view of such systems. The use of such motors introduces mechanical noise, which is difficult to remove when processing the echo signals. A fisheye lens system offering a wide field of view would effective...

This paper describes a system in development that determines a fisheye view of the factors for a telecommunications investment decision. The computer science community has explored the fisheye view as a technique to better organize information and reduce information overload. In our application, the fisheye view focuses on the factors that are important for a particular type of investment but a...

Abstract—This report describes our ongoing work on a new end-to-end available-bandwidth measurement tool: FEAT (Fish-Eye Availablebandwidth Tool). FEAT features a new dynamic pattern of probes called a Fisheye Stream. One fisheye stream covers a range of packet probing rates. A fisheye stream consists of a focus region, where the probing rates are sampled more frequently and the number of packe...

We present an easy fisheye camera calibration technique based on a square in the scene plane in this paper. Firstly, aiming at a generic quadrangle including two parallel line segments with the known length ratio, the planar homography between the scene planar including the generic quadrangle and its image is estimated by images of two parallel line segments, then constraints on fisheye camera ...