The OpenVX Specification  2b213f9
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Data Structures
Here are the data structures with brief descriptions:
oCvx_border_tUse with the enumeration VX_NODE_BORDER to set the border mode behavior of a node that supports borders
oCvx_coordinates2d_tThe 2D Coordinates structure
oCvx_coordinates3d_tThe 3D Coordinates structure
oCvx_imagepatch_addressing_tThe addressing image patch structure is used by the Host only to address pixels in an image patch. The fields of the structure are defined as:
oCvx_kernel_info_tThe Kernel Information Structure. This is returned by the Context to indicate which kernels are available in the OpenVX implementation
oCvx_keypoint_tThe keypoint data structure
oCvx_perf_tThe performance measurement structure. The time or durations are in units of nano seconds
oCvx_pixel_value_tUnion that describes the value of a pixel for any image format. Use the field corresponding to the image format
\Cvx_rectangle_tThe rectangle data structure that is shared with the users. The area of the rectangle can be computed as (end_x-start_x)*(end_y-start_y)