The linear array push broom imaging mode is widely used for high resolution optical satellites (HROS). Using double-cameras attached by a high-rigidity support along with push broom imaging is one method to enlarge the field of view while ensuring high resolution. High accuracy image mosaicking is the key factor of the geometrical quality of complete stitched satellite imagery. This paper propo...

To obtain a natural view of the operation room and autonomous image selection and transformation during tele-surgical operation, we propose a telemonitoring system which is composed of two types of camera systems. One is an active camera system controlled by surgeon’s gesture and gaze direction to obtain natural view image. Another is a fixed camera system that is composed of multiple cameras a...

This paper describes online simultaneous underwater image gathering, utilizing stationary camera node and movable camera node. We consider applying them to investigate the conditions of marine ecosystem around coral leaf at Okinawa, Japan. The framework of our proposed underwater image gathering system and current development of the camera node prototypes are described. By utilizing two types o...

An alternative method for distance measurement is presented, based on a radiometric approach to the image formation process. The proposed methodology uses images from an infrared emitting diode (IRED) to estimate the distance between the camera and the IRED. Camera output grey-level intensities are a function of the accumulated image irradiance, which is also related by inverse distance square ...

An approach for estimating composite independent object and camera image motions is proposed. The approach employs spatio-temporal ow models learned through observing typical movements of the object, to decompose image motion into independent object and camera motions. The spatio-temporal ow models of the object motion are represented as a set of orthogonal ow bases that are learned using princ...

People need to calibrate camera systems in order to determine the relationship between the positions of features in object space and their corresponding positions in the image. Part of camera calibration is the determination of image center. But, what is the image center? Ideally, the image center is considered to be the point of intersection of the camera's optical axis with the camera's sensi...

Multi-camera systems have been evolving as next generation video cameras with applications including 3D reconstruction, image-based rendering, free viewpoint, and 3D TV. Quantifying visual quality of multi-camera systems is fundamental in developing these applications. In this paper, image distortion types in multi-camera systems are investigated where distortion is classified as either geometr...

Precision slit-image photographs of the anterior segment of the eye are capable of giving information about the dimensions and densities (light-scattering properties) of the refractive structures of the eye, which is not obtainable by direct inspection, and of providing a record of progress. Slit-image pictures were first used for this purpose by Goldmann (I940). For a slit-image photograph to ...

Text is no longer confined to scanned pages and often appears in camera-based images originating from text on real world objects. Unlike the images from conventional flatbed scanners, which have a controlled acquisition environment, camera-based images pose new challenges such as uneven illumination, blur, poor resolution, perspective distortion and 3D deformations that can severely affect the ...

A fundamental problem in conventional photography is that movement of the camera or captured object causes motion blur in the image. In this research, we propose coding motion-invariant blur using a programmable aperture camera. The camera realizes virtual camera motion by translating the opening, and as a result, we obtain a coded image in which motion blur is invariant with respect to object ...