the problem of eye detection in face images is very important for a large number of applications ranging from face recognition to gaze tracking. in this paper we propose a new algorithm for eyes detection. first, the face region is extracted from the image by skin-color information. second, horizontal projection in image is used to approximate region of the eye be obtained . at last, the eye ce...

this paper addresses the signal processing principles in passive bistatic radar (pbr) systems. in this case, the detection problem in the presence of system noise, clutter/multipath, direct signal and interfering target signals is investigated. to this light, two types of detectors are studied. in the first one, which is based on intuitive sense, we examine two detectors. in the second type det...

There are several ways of contactless distance measurements. This research work made use the principle ultrasonic measurements and calculations as well tracking dynamic object by techniques comparison. When an electrical pulse high voltage is applied to transducer it vibrates across a specific spectrum frequencies generates burst sound waves. Each time any obstacle comes ahead sensor, waves wil...

Abstract Tunable semiconductor lasers have many important applications such as wavelength division multiplexing, light detection and ranging, gas detection. The increased interest in silicon photonics has led to the rapid development of miniaturized on-chip tunable lasers. However, poor light-emitting properties. Therefore, realizing high-performance requires integration sources with silicon. I...

accurate interpretation of radiographic images is dependent on viewing conditions. recently the number of radiology departments has been increased so it needs to use a workstation for reporting. the aim of this study was assess monitor performance and the effect of viewing conditions on object detection. this investigation aimed to quantify the effects of changes in box brightness and ambient l...