Optical Motion Tracking - Design

Design

An optical tracking system typically consists of 3 subsystems. The optical imaging system, the mechanical tracking platform and the tracking computer.

The optical imaging system is responsible for converting the light from the target area into digital image that the tracking computer can process. Depending on the design of the optical tracking system, the optical imaging system can vary from as simple as a standard digital camera to as specialized as an astronomical telescope on the top of a mountain. The specification of the optical imaging system determines the upper-limit of the effective range of the tracking system.

The mechanical tracking platform holds the optical imaging system and is responsible for manipulating the optical imaging system in such a way that it always points to the target being tracked. The dynamics of the mechanical tracking platform combined with the optical imaging system determines the tracking system's ability to keep the lock on a target that changes speed rapidly.

The tracking computer is responsible for capturing the images from the optical imaging system, analyzing the image to extract target position and controlling the mechanical tracking platform to follow the target. There are several challenges. First the tracking computer has to be able to capture the image at a relatively high frame rate. This posts a requirement on the bandwidth of the image capturing hardware. The second challenge is that the image processing software has to be able to extract the target image from its background and calculate its position. Several textbook image processing algorithms are designed for this task but each has its own limitations. This problem can be simplified if the tracking system can expect certain characteristics that is common in all the targets it will track. The next problem down the line is to control the tracking platform to follow the target. This is a typical control system design problem rather than a challenge, which involves modeling the system dynamics and designing controllers to control it. This will however become a challenge if the tracking platform the system has to work with is not designed for real-time and highly dynamic applications, in which case the tracking software has to compensate for the mechanical and software imperfections of the tracking platform.

Read more about this topic:  Optical Motion Tracking

Other articles related to "design, designs":

56th Tony Awards - The Ceremony
... Musical, Original Score, Choreography, Costume Design, Lighting Design and Scenic Design ...
Very-large-scale Integration - Structured Design
... Structured VLSI design is a modular methodology originated by Carver Mead and Lynn Conway for saving microchip area by minimizing the interconnect ... In complex designs this structuring may be achieved by hierarchical nesting ... Structured VLSI design had been popular in the early 1980s, but lost its popularity later because of the advent of placement and routing tools wasting a lot of ...
Boeing 747 - Design
... For more design details, see Boeing 747-400, 747-8, and 747SP ... The Boeing 747 is a large, wide-body (two-aisle) airliner with four wing-mounted engines ...
Shea Stadium - Features - Design
... The design also allowed for Shea Stadium to be expandable to 90,000 seats (by completely enclosing the grandstand), or to be later enclosed by a dome if warranted ...
Terminology - Process Design
... "Process design" (in contrast to "design process" mentioned above) refers to the planning of routine steps of a process aside from the expected result ... Processes (in general) are treated as a product of design, not the method of design ... and executives have found the term useful to describe the design of business processes as well as manufacturing processes ...

Famous quotes containing the word design:

    I always consider the settlement of America with reverence and wonder, as the opening of a grand scene and design in providence, for the illumination of the ignorant and the emancipation of the slavish part of mankind all over the earth.
    John Adams (1735–1826)

    You can make as good a design out of an American turkey as a Japanese out of his native stork.
    —For the State of Illinois, U.S. public relief program (1935-1943)

    Teaching is the perpetual end and office of all things. Teaching, instruction is the main design that shines through the sky and earth.
    Ralph Waldo Emerson (1803–1882)