What is the Max X and Y of the pixy2

[robert]

What is the Max X and Y of the pixy2?

[freed]

Hi Robert,

I think you’re asking about the upper bounds of the X-Y coordinates that Pixy will return. Those are described here: https://docs.pixycam.com/wiki/doku.php?id=wiki:v2:ccc_api

The X ranges from 0 (left) to 315 (right). The Y ranges from 0 (top) to 207 (bottom).

Hope this helps!

Cheers,
Jesse

[robert]

Why an odd number

[edge]

Why an odd as in not even or why and odd as in strange?

The 0 to some odd (not even) is common because it always represents an even number of possibilities.

The numbers are based on QVGA values but we can’t grab the first pixes on each scanline because of timing constraints.

Edward

[Caleb_Alhassan]

I need to convert the x and y coordinates of the pixycam to centimeters. Is there a key for something like that.

[edge]

Hello,
This topic might help:

Finding the distance to an object, mathematically.

If we move the a BB twice as close to the camera, it gets bigger. But the area it covers does not get twice as large. The apparent length will double, but the apparent area will quadruple. The square root is there to deal with that. Formula: distance(final)= distance(initial)times(x) the square root of {initial area divided by measured area} The initial area can be measured at one meter distance away from camera. The measured area is what the pixy is giving you. Hope this helps.

In general, the camera only sees pixels. You can calculate inches/pixel for objects at a fixed distance from the camera lens, but that value (inches/pixel) will change if the object moves closer or farther away from the lens. Hope this helps.

Edward