Optimal Sampling Strategies for Line-Of-Sight Calculations in Urban Regions

نویسندگان

  • Phil Bartie
  • William Mackaness
چکیده

Smartphone applications are driving a growing interest in 3D modelling – in particular the use of LiDAR for modelling city landscapes at high levels of precision and accuracy. In such dynamic environments, where we wish to make decisions based on places of interest that are in the (rapidly changing) field of view, it is critical that we address performance issues in visibility analysis. This paper explores optimisation of a point-to-point line-of-sight algorithm. This paper outlines a variety of line of sight sampling strategies, together with a number of trials that enabled us to optimise sampling in the context of urban visibility analysis.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Estimation of LOS Rates for Target Tracking Problems using EKF and UKF Algorithms- a Comparative Study

One of the most important problem in target tracking is Line Of Sight (LOS) rate estimation for using from PN (proportional navigation) guidance law. This paper deals on estimation of position and LOS rates of target with respect to the pursuer from available noisy RF seeker and tracker measurements. Due to many important for exact estimation on tracking problems must target position and Line O...

متن کامل

Attitude toward the development of optimal strategies for creating favorable urban spaces for children with autism

Autism is one of the new emerging diseases in the world, and children who has it are one of the most vulnerable groups in the community. Appropriate urban spaces for the use of these particular children are always discussed in the whole world. In this research, we are going to take a step further in order to achieve optimal solutions for creating favorable urban spaces for children with autism....

متن کامل

Accelerating Line-of-Sight queries for Terrain Processing using Region Based Visibility

We present an efficient algorithm for line-of-sight (LOS) computations in modeling and simulation applications. LOS queries are solved by performing point-to-point visibility computations in complex environments with moving entities. Our approach divides the environment into regions and uses region based visibility calculations to compute region-to-region visibility as a visibility table for ea...

متن کامل

Detecting, estimating and correcting multipath biases affecting GNSS signals using a marginalized likelihood ratio-based method

In urban canyons, non-line-of-sight (NLOS) multipath interferences affect position estimation based on global navigation satellite systems (GNSS). This paper proposes to model the effects of NLOS multipath interferences as mean value jumps contaminating the GNSS pseudo-range measurements. The marginalized likelihood ratio test (MLRT) is then investigated to detect, identify and estimate the cor...

متن کامل

Line of Sight (LOS) rate estimation in strap down seekers using discrete-time extended state observer.

The line of sight (LOS) rate is a parameter that is needed to calculate the acceleration applied to missiles by the proportional guidance laws in order to hit the target. This rate is usually measured using gimbaled seekers. However, if the type of missile seeker be strap down, the LOS rate must be calculated from deriving the missile's seeker output angles or estimation methodes. The derivatio...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2012