Similar Triangles: Using Parallax to Measure Distance

[sorgalim1]

It says that [quote]The goal of this project is to measure the distance to some distant, small objects using motion parallax.[/quote]Well , I need a concluesion for my project and I dont see how i can use my info to come up with a concluesion. I wasnt testing anything.

[hhemken]

Hi sorgalim1,

Think of this project as the construction and calibration of a piece of scientific apparatus which you then use to measure some previously unmeasured phenomenon.

Let's say you were using it to measure objects that change position. You could first set things up with objects at a known distance in front of the grid to calibrate your method, meaning that you show that you can actually get good measurements of the known objects. Then, in your experiment, you use it to measure the unknown distances to other objects. You can do some variations in which you use a digital camera to take photos every N seconds, changing the camera's position as necessary. That would only work for very slow moving objects, though. You could have two or more identical cameras in pre-defined positions and have a friend help you take simultaneous photos. You would perform your measurements on a computer or on printed out photos. Instead of a grid, which might not be practical in real life, you could use visual landmarks in the background that don't move or change, and apply the method to cars, buildings, or other large-scale objects. You could calculate the relative positions of objects in a real-life 3D scene. To get accurate measurements, you could measure each object 3 or more times and get an average.

In short, you would 1) calibrate the method, and 2) apply it to some interesting phenomenon to learn something. Use your imagination to formulate your own specific project.

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Similar Triangles Using Parallax to Measure Distance 

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