Camera Intrinsics Kinect.txt

#define NUI_CAMERA_DEPTH_NOMINAL_FOCAL_LENGTH_IN_PIXELS         (285.63f)   // Based on 320x240 pixel size.
#define NUI_CAMERA_DEPTH_NOMINAL_INVERSE_FOCAL_LENGTH_IN_PIXELS (3.501e-3f) // (1/NUI_CAMERA_DEPTH_NOMINAL_FOCAL_LENGTH_IN_PIXELS)
#define NUI_CAMERA_DEPTH_NOMINAL_DIAGONAL_FOV                   (70.0f)
#define NUI_CAMERA_DEPTH_NOMINAL_HORIZONTAL_FOV                 (58.5f)
#define NUI_CAMERA_DEPTH_NOMINAL_VERTICAL_FOV                   (45.6f)
#define NUI_CAMERA_COLOR_NOMINAL_FOCAL_LENGTH_IN_PIXELS         (531.15f)   // Based on 640x480 pixel size.
#define NUI_CAMERA_COLOR_NOMINAL_INVERSE_FOCAL_LENGTH_IN_PIXELS (1.83e-3f)  // (1/NUI_CAMERA_COLOR_NOMINAL_FOCAL_LENGTH_IN_PIXELS)
#define NUI_CAMERA_COLOR_NOMINAL_DIAGONAL_FOV                   ( 73.9f)
#define NUI_CAMERA_COLOR_NOMINAL_HORIZONTAL_FOV                 ( 62.0f)
#define NUI_CAMERA_COLOR_NOMINAL_VERTICAL_FOV                   ( 48.6f)
aspect ratio would be 58.5/45.6 for depth camera, or 62/48.6 for color camera (which both are approx 1.28).