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VisionWorks Toolkit ReferenceSeptember 29, 2015 | 1.0 Release |
Adds KeyPoint data structure with floating point coordinates.
The structure is similar to standard vx_keypoint_t
, but it uses floating point coordinates instead of integer.
Data Structures | |
struct | nvx_keypointf_t |
Defines a keypoint data structure. More... | |
Enumerations | |
enum | nvx_keypoint_directive_e { NVX_DIRECTIVE_KEYPOINT_ERROR_DISABLE = VX_ENUM_BASE(VX_ID_NVIDIA, VX_ENUM_DIRECTIVE) + 0x0, NVX_DIRECTIVE_KEYPOINT_ERROR_ENABLE = VX_ENUM_BASE(VX_ID_NVIDIA, VX_ENUM_DIRECTIVE) + 0x1, NVX_DIRECTIVE_KEYPOINT_ERROR_DEFAULT = VX_ENUM_BASE(VX_ID_NVIDIA, VX_ENUM_DIRECTIVE) + 0x2 } |
Defines directives that control primitives behavior with keypoint data type. More... | |
struct nvx_keypointf_t |
Data Fields | ||
---|---|---|
vx_float32 | error | Holds a tracking method-specific error. Initialized to 0 by corner detectors. |
vx_float32 | orientation | Holds the orientation initialized to 0 by corner detectors. |
vx_float32 | scale | Holds the scale initialized to 0 by corner detectors. |
vx_float32 | strength | Holds the strength of the keypoint. Its definition is specific to the corner detector. |
vx_int32 | tracking_status | Holds tracking status. Zero indicates a lost point. Initialized to 1 by corner detectors. |
vx_float32 | x | Holds the x coordinate. |
vx_float32 | y | Holds the y coordinate. |
Defines directives that control primitives behavior with keypoint data type.
These enumerations are given to the vxDirective
API to enable/disable different features related to vx_keypoint_t
and nvx_keypointf_t
data types.
The directives might be applied to vx_node
, vx_graph
or vx_context
objects. Immediate mode functions inherit this property from parent vx_context
object. Graph objects inherit this property from parent vx_context
object at verification stage, if the graph directive was not set by application. Node objects inherit this property from parent vx_graph
object at verification stage, if the node directive was not set by application.