Automated distance estimation for wildlife camera trapping

A permanent security post for camera trapping

As the use of camera traps in wildlife management in Australia rapidly increases, government agencies, private enterprises, universities and individuals are investing considerable amounts ofmoney in camera trap technology for research, monitoring and recreation. Often camera traps need to be placed along vehicle tracks or in obvious locations to detect animal activity. Consequently, units are f...

Camera Pose and Focal Length Estimation Using Regularized Distance Constraints

Camera pose and intrinsic parameters estimation from n 2D-to-3D point correspondences is a known problem in computer vision and photogrammetry. Depending on the set of unknown parameters, the problem is called Perspective-n-Point (PnP) when only absolute camera pose is unknown or PnPf when focal length is unknown as well. Projection error functions are highly non-convex in focal length, so befo...

channel estimation for mimo-ofdm systems

تخمین دقیق مشخصات کانال در سیستم های مخابراتی یک امر مهم محسوب می گردد. این امر به ویژه در کانال های بیسیم با ‏خاصیت فرکانس گزینی و زمان گزینی شدید، چالش بزرگی است. مقالات متعدد پر از روش های مبتکرانه ای برای طراحی و آنالیز ‏الگوریتم های تخمین کانال است که بیشتر آنها از روش های خاصی استفاده می کنند که یا دارای عملکرد خوب با پیچیدگی ‏محاسباتی بالا هستند و یا با عملکرد نه چندان خوب پیچیدگی پایینی...

An iterative approach for estimation of efficiency by weighted distance

Camera Estimation for Orbiting Pushbrooms

Several space borne cameras use push broom scanning to acquire imagery Traditionally mod eling and analyzing these sensors has been computation ally intensive due to the motion of the orbiting satellite with respect to the rotating earth and the non linearity of the mathematical model involving orbital dynamics A new technique for mapping a D point to its cor responding image point that leads t...