Peter P. M. Janssens

  • Citations Per Year
Learn More
This paper presents a parametric, frequency domain identification method for modeling continuous(discrete-) time, periodically time-varying systems from input-output measurements. In this framework both the output as well as the input are allowed to be corrupted by stationary noise (= errors-in-variables approach). Furthermore, it is assumed that the system(More)
We present a standardized procedure to measure the amount of speckle in laser based projection systems. The parameters of the measurement procedure are chosen such that the measured speckle contrast values are in correspondence with the subjective speckle perception of a human observer, independent of the particularities of the laser projector's(More)
We study the perception of speckle by human observers in a laser projector based on a 40 persons survey. The speckle contrast is first objectively measured making use of a well-defined speckle measurement method. We statistically analyse the results of the user quality scores, revealing that the speckle perception is not only influenced by the speckle(More)
The influence of salinity on the performance of the sibling species Tisbe holothuriae and T. battagliai in pure and mixed cultures was studied, using laboratory stocks adapted to 32‰ for over 175 generations. Cohort studies show that T. holothuriae has higher growth rates (Ro and r) at 32‰, T. battagliai at 20‰ The latter's life cycle is much less affected(More)
In a multi-disciplinary effort, we investigate the level of speckle that can be tolerated in a laser cinema projector based on a quality of experience experiment with movie clips shown to a test audience in a real-life movie theatre setting. We identify a speckle disturbance threshold by statistically analyzing the observers' responses for different values(More)
This paper describes the Monte Carlo simulation developed specifically for the VCS experiments below pion threshold that have been performed at MAMI and JLab. This simulation generates events according to the (Bethe-Heitler + Born) crosssection behaviour and takes into account all relevant resolution-deteriorating effects. It determines the “effective”(More)
  • 1