Abstract. Continuous advancements in pulsed wind lidar technology have enabled compelling turbulence measurements within the atmospheric boundary layer with probe lengths shorter than 20 m and sampling frequency on order of 10 Hz. However, estimates radial velocity from back-scattered signal are inevitably affected by an averaging process each volume, generally modeled as a convolution between ...

Recent progress in retinal image acquisition techniques, including optical coherence tomography (OCT) and scanning laser ophthalmoscopy (SLO), combined with improved performance of adaptive optics (AO) instrumentation, has resulted in improvement in the quality of in vivo images of cellular structures in the outer layers of the human retina. Despite the significant progress in imaging cone and ...

An analytical evaluation of the performance in terms of detection probability and mean detection time of a noncoherent detector at the base station is presented for a wideband CDMA system, where the mobile terminal transmits a pilot signal in the form of bursts of modulated chips, which are transmitted periodically and separated by long silent intervals. The performance analysis is carried out ...

Besides conveying linguistic information, spoken language can also transmit important cues regarding the emotion of a talker. These prosodic cues are most strongly coded by changes in amplitude, pitch, speech rate, voice quality and articulation. The present study investigated the ability of cochlear implant (CI) users to recognize vocal emotions, as well as the relative contributions of spectr...

Due to the recent growth of the World Wide Web, numerous spatio-temporal applications can obtain their required information from publicly available web sources. We consider those sources maintaining moving objects with predefined paths and schedules, and investigate different plans to perform queries on the integration of these data sources efficiently. Examples of such data sources are network...

Vision-based applications usually have as input a continuous stream of data. Therefore, it is possible to use the information generated in previous frames to improve the analysis of the current one. In the context of video-based driver-assistance systems, objects present in a scene typically perform a smooth motion through the image sequence. By considering a motion model for the ego-vehicle, i...

In this paper, we propose a spatio-temporal filtering scheme that utilizes motion compensation with multireference frames in H.264 to remove noise. It utilizes the variation of inter mode distributions to detect noise and determine the parameters for spatial filter. In the time domain, a reference pixel is selected from multireference frames according to the motion trajectory and MSE criterion....

In this paper, spatial neighboring pixels are used to deal with blocking and ringing artifacts while temporal neighboring pixels are utilized to remove mosquito and flickering artifacts. To avoid the blurring effect of linear filters, a fuzzy filter is implemented. Fuzzy filter is a specific case of bilateral filters [15], [16]. Fuzzy filters help denoising the artifacts while retaining the sha...

Introduction: In order to reduce total acquisition time or to increase spatiotemporal resolution in dynamic MRI several techniques such as TSENSE [1], TGrappa [2], kt-SENSE, kt-BLAST [3] and kt-Grappa [4] have recently been introduced. The combination of parallel MRI and temporal imaging acceleration permits the use of higher acceleration factors compared to conventional parallel imaging techni...

The temporal variability of rainfall and raindrop processes is examined at time scales ranging from less than 1 minute to 1 hour. Raindrop processes are represented in terms of drop arrival rate, mean diameter and coe cient of variation of drop diameter and modeled as time-varying stochastic processes. It is shown that rainfall rate and accumulated rainfall have simple and accurate representati...