ricky li

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London and the U.K. From Above

Photographer Jason Hawkes has been making fascinating aerial images since 1991. With a gyro-stabilized camera, he takes photos directly from the open door of a helicopter. Hawkes has covered subjects around the world, but specializes in aerial shots of the United Kingdom. Once more, he's been kind …

Lumelsky, Vladimir - UW-Engineering Directory | College of Engineering @ The University of Wisconsin-Madison

• BS, MS 1960, 1962, Computer Science and Engineering, Institute of Precision Technology (LITMO), St. Petersburg, Russia<br>• PhD 1970, Applied Mathematics, …

CS373: Programming a Robotic Car.

Unit 2 Extra material: Kalman Filter Matrices<p><b>By Anne Paulson, student of the first edition of CS373</b><p>Contents<p>Part I - Who is Who in the Land of Kalman …

Using a PID-based Technique For Competitive Odometry and Dead-Reckoning

A robot also has an active controller unit. And, given the right software, it can guide a differential-steering system with smooth precision. In the …

Steering Behaviors For Autonomous Characters

The approach taken in this paper is to consider steering behaviors as essentially independent from the underlying locomotion scheme. A simple …

Algorithms

Finding Differential Wheel Velocity as a Function of Turn Angle and Radius and Constant Acceleration

<b>Finding Differential Wheel Velocity as a Function of Turn Angle and Radius and Constant Acceleration</b><p><b>By Mitch Berkson</b><p><b>Introduction</b><p>The paper “<i>A Tutorial</i> …

A Path Based on an Arc of a Circle

Revision 1.2<p>11 January 2006<p>A Path Following a Circular Arc<p>To a Point at a Specified Range and Bearing<p>by G.W. Lucas …

Introduction<p>As far as I know, no one has compiled a catalog of the many calculations that are used in robotics. I don’t doubt that such a thing is …

A Tutorial and Elementary Trajectory Model for The Differential Steering System

Introduction These notes present equations describing the path of a robot or vehicle equipped with a <i>differentially steered drive system</i>. This simple …

Python IAQ: Infrequently Answered Questions

In Python 2, print is a statement, and it is not a bad idea to implement a print function such as printf. In Python 3,<p>is a function, so the need goes …

Teach Yourself Programming in Ten Years

Why is everyone in such a rush?<p>Walk into any bookstore, and you'll see how to <i>Teach Yourself Java in 24 Hours</i> alongside endless variations offering to …

Matrices - Programming in Python

These notes describe how to define and process a matrix with the Python programming language. One should first be familiar with list iteration before …