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Image acquisition is the elementary step on the way to a performing vision-based Driver Assistance System (DAS). Any visual information lost in the capturing process is irretrievably gone. Many application approaches do not consider any influence on the camera, but take the image data as is from the capturing device. This paper starts with an overview of the most relevant solutions of high dynamic...
In this paper, a new robust approach for camera based lane recognition is presented. The tracking filter and the detection interact such that the tracking filter is used to place a region of interest for a detection of lane segments in various distances, and each successful detection is used to update the lane geometry in the tracking filter. A novel and time efficient detection algorithm is used...
This paper presents a novel approach for an online initial camera calibration to estimate the extrinsic parameters for vision-based intelligent driver assistance systems. The method uses the periodicity of dashed lane markings and velocity information to determine the extrinsic camera parameters: height, pitch and roll angle. A lane marking detector is utilized to convert the images of road scenes...
Forward Collision Warning (FCW) together with Lane Departure Warning (LDW) and Electronic Stability Control (ESC) can highly contribute to a safer traffic environment. Therefore those three systems will be supported by the US NCAP (New Car Assessment Program) until the end of 2009 and rewarded in the new active safety rating. LDW and ESC are already on the market whereas development on the first vision-based...
Intelligent driver assistance systems, such as lane departure warning, extract 3D information of the road geometry from a camera. Therefore, the transformation between the image and the ground plane has to be determined with a very high accuracy. Conventional calibration methods are usually a compromise between the accuracy and a preferably small effort for the calibration set-up. In this paper, we...
Ultrasound images of the brain, usually obtained from transcranial scans, are difficult to be interpreted for inexperienced users. We present a newly developed training station, designed to assist physicians at this task. This training station works as a real time anatomic atlas and is an add-on system to a conventional ultrasound scanner. The transducer of the ultrasound system is tracked by a positioning...
In cardiac diagnostics, multimodal images of morphological and functional properties could improve the early diagnosis of heart diseases. The well established 3D echocardiography provides morphological parameters, such as the size of the myocardium, blood volume or contractility, whereas PET offers complementary functional information, e.g. myocardial perfusion and viability. Therefore, a registration...
High sensitivity ultrafast nanowire superconducting single photon detectors (SSPD) in the near infrared wavelength range have been fabricated with ultrathin (3.5nm) NbN films grown on R-plane sapphire substrates by dc reactive magnetron sputtering in Ar+N2 mixture. These results show for the first time that high performance NbN SSPDs can be realized on different substrates and at lower deposition...
The modeling and simulation of biological tissue could provide insight into the acoustical backscattering properties of biological tissue at microscopic scales. Therefore, blood is modeled as a stochastic, heterogeneous medium. The realizations of this stochastic process are evaluated by means of autocorrelation functions and the acoustic backscattering coefficient is derived from them. A Metropolis...
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