camera origin

[kdaib]

The SDK uses the following two types of coordinate system definitions: Image and Camera. However, there is no explanation how to transform between the two system. If I need to get the projected position of the camera origin on the image plane, how should I do?

Any help is appreciated! Thank you!

[jb455]

Hi,

For mapping between the different images and coordinate systems, you need to use the projection interface.

Specifically to map from the camera to the colour image you can use http://https://software.intel.com/sites/landingpage/realsense/camera-sdk/v1.1/documentation/html/index.html?projectcameratocolor_pxcprojection.html ProjectCameraToColor after using https://software.intel.com/sites/landingpage/realsense/camera-sdk/v1.1/documentation/html/index.html?createprojection_device_pxccapture.html Device.CreateProjection.

James

[kdaib]

Hi James,

thanks for your answer.

I understand how to map between different coordinate systems, but I still do not know where is camera origin.

[idata]

Hi Daiby,

Do you still need assistance with this case?-Sergio

[kdaib]

Hi Sergio,

yes, I still need the assistance about where camera origin mapping to coordinate systems

[idata]

Hi Daiby,

Let me check if I'm understanding your request correctly. You objective is to set a certain location as the camera origin (0,0,0) and then move your camera to a different coordinate. After this you should see a projection of the change in the camera's location. Is this what you want to achieve? If that's the case I'd suggest you to look at https://software.intel.com/sites/landingpage/realsense/camera-sdk/v2016r3/documentation/html/index.html?doc_essential_coordinate_systems.html https://software.intel.com/sites/landingpage/realsense/camera-sdk/v2016r3/documentation/html/index.html?doc_essential_coordinate_systems.html . Here you'll find the information needed to configure a coordinate system.Let us know if this is what you were looking for.-Sergio

[kdaib]

Hi Sergio,

Is the camera origin (0,0,0) a absolute coordinate, or I need to set a point as the camera origin?

Thank for your suggestion.

[idata]

Hi Daiby,

The camera origin in 3D is at the center of the camera. This means that you need to setup a point as the camera's (0,0,0) point. The coordinate system varies slightly depending if it's a front facing or rear facing camera.The camera's coordinate system for different cameras can be seen on https://software.intel.com/sites/landingpage/realsense/camera-sdk/v2016r3/documentation/html/index.html?doc_essential_coordinate_systems.html https://software.intel.com/sites/landingpage/realsense/camera-sdk/v2016r3/documentation/html/index.html?doc_essential_coordinate_systems.html.Take a look at https://software.intel.com/sites/landingpage/realsense/camera-sdk/v2016r3/documentation/html/doc_essential_configuring_coordinate_system.html https://software.intel.com/sites/landingpage/realsense/camera-sdk/v2016r3/documentation/html/doc_essential_configuring_coordinate_system.html for details of configuring the camera coordinate system.-Sergio