The OpenVX Specification
r28647
|
Thresholds an input image and produces an output Boolean image.
In VX_THRESHOLD_TYPE_BINARY
, the output is determined by:
\[ dst(x,y) = \begin{cases} 255 & \text{if } src(x,y) > threshold \cr 0 & \text{otherwise } \end{cases} \]
In VX_THRESHOLD_TYPE_RANGE
, the output is determined by:
\[ dst(x,y) = \begin{cases} 0 & \text{if } src(x,y) > upper \cr 0 & \text{if } src(x,y) < lower \cr 255 & \text{otherwise } \end{cases} \]
Functions | |
vx_node | vxThresholdNode (vx_graph graph, vx_image input, vx_threshold thresh, vx_image output) |
[Graph] Creates a Threshold node. More... | |
vx_status | vxuThreshold (vx_context context, vx_image input, vx_threshold thresh, vx_image output) |
[Immediate] Threshold's an input image and produces a VX_DF_IMAGE_U8 * boolean image. More... | |
vx_node vxThresholdNode | ( | vx_graph | graph, |
vx_image | input, | ||
vx_threshold | thresh, | ||
vx_image | output | ||
) |
[Graph] Creates a Threshold node.
[in] | graph | The reference to the graph. |
[in] | input | The input image. VX_DF_IMAGE_U8 is supported. |
[in] | thresh | The thresholding object that defines the parameters of the operation. |
[out] | output | The output Boolean image. Values are either 0 or 255. |
vx_node
. 0 | Node could not be created. |
* | Node handle. |
vx_status vxuThreshold | ( | vx_context | context, |
vx_image | input, | ||
vx_threshold | thresh, | ||
vx_image | output | ||
) |
[Immediate] Threshold's an input image and produces a VX_DF_IMAGE_U8
* boolean image.
[in] | context | The reference to the overall context. |
[in] | input | The input image. VX_DF_IMAGE_U8 is supported. |
[in] | thresh | The thresholding object that defines the parameters of the operation. |
[out] | output | The output Boolean image. Values are either 0 or 255. |
vx_status_e
enumeration. VX_SUCCESS | Success |
* | An error occurred. See vx_status_e . |