# What is the orientation axis for kinect sensor ?

• ### Question

• Hi,

I want to know the axis notation of kinect sensor.. That is ,if a person moves left or right what is the axis in which he/she is moving ??What is the point of reference for kinect depth sensor ??

Regards,

Sandhya.

Sandhya

Wednesday, June 26, 2013 10:43 AM

• Hi,

You can find this information on the online documentation :

msdn.microsoft.com /en-us/library/hh973078.aspx#Depth_Ranges or msdn.microsoft.com /en-us/library/hh973074.aspx

Wednesday, July 3, 2013 8:33 AM

### All replies

• The point of origin of Kinect coordinates referential is the sensor itself.

the system is 3D: X:horizontal, Y:vertical, Z: depth/distance to kinect

Meaning:

• for a point perfectly is front of kinect but 2 meters far, coordinates will be X=0; Y=0; Z=2
• if the same point moved 1 meter on the left and 50cm up: X=-1; Y=0.50; Z=2

Beware that Kinect sensor acts as a mirror so left and right may be considered as inverted compared to a standard camera.

Vincent Guigui Innovative Technologies Expert at OCTO Technology MVP Kinect

Wednesday, June 26, 2013 12:20 PM
• Thankx for the response.. but in few websites they have given as

The Kinect's x, y and z axis is explained in the figure. This diagram tells us that, by Fleming’s left hand rule,

• the thumb finger is pointed up and indicates the x axis;
• The index finger is pointed horizontally and indicates the y axis.
• The middle finger indicates the z axis.
• The point of reference is the kinect itself.

This contradicts the axis explanation given as response.. Can you pls help me in understanding the axis of kinect...

Regards,

Sandhya.

Sandhya

Thursday, June 27, 2013 5:05 AM
• The schema you are showing is from above a Kinect ;)

• X is horizontal: negative value on your left, positive value on your right
• Y is vertical: negative at the bottom, positive upward
• Z is the distance to kinect

Vincent Guigui Innovative Technologies Expert at OCTO Technology MVP Kinect

Thursday, June 27, 2013 12:43 PM
• Thankx a ton for the response....

I have few other doubts in kinect ..

What is the origin for kinect?.

I mean what is the point at which kinect sensor has the value (0,0,0).

Also What is the minimal distance which the kinect can recognize as depth?

Regards,

Sandhya.

Sandhya

Tuesday, July 2, 2013 12:45 PM
• Hi,

You can find this information on the online documentation :

msdn.microsoft.com /en-us/library/hh973078.aspx#Depth_Ranges or msdn.microsoft.com /en-us/library/hh973074.aspx