OpenVX基本视觉功能

基本视觉功能

1.输入输出表

OpenVX附带了一组标准的或基本的视觉功能。表2-2列出了支持的视觉功能集、输入类型（见表2-2）和输出类型（见表2-3），以及支持的OpenVX版本。

表2-2 OpenVX视觉功能输入参数

视觉功能	U1	S8	U8	U16	S16	U32	F32	颜色	其他
AbsDiff			1.0		1.0.1
Add			1.0		1.0
And	1.3		1.0
BilateralFilter			1.2		1.2
Box3x3			1.0
CannyEdgeDetector			1.0
ChannelCombine			1.0
ChannelExtract								1.0
ColorConvert								1.0
ConvertDepth	1.3		1.0		1.0
Convolve			1.0
Copy (image object)									1.2
Dilate3x3	1.3		1.0
EqualizeHist			1.0
Erode3x3	1.3		1.0
FastCorners			1.0
Gaussian3x3			1.0
GaussianPyramid			1.0
HarrisCorners			1.0
HalfScaleGaussian			1.0
HarrisCorners			1.0
HOGCells			1.2
HOGFeatures			1.2
HoughLinesP	1.3		1.2
IntegralImage			1.0
LaplacianPyramid			1.1
LaplacianReconstruct					1.1
LBP			1.2
Magnitude					1.0
MatchTemplate			1.2
MeanStdDev	1.3		1.0
Median3x3	1.3		1.0
Max			1.2		1.2
Min			1.2		1.2
MinMaxLoc			1.0		1.0
Multiply			1.0		1.0
NonLinearFilter	1.3		1.1
NonMaxSuppression	1.3		1.2		1.2
Not	1.3		1.0
OpticalFlowPyrLK			1.0
Or	1.3		1.0
Phase					1.0
Remap			1.0
ScaleImage	1.3		1.0
Sobel3x3			1.0
Subtract			1.0		1.0
TableLookup			1.0		1.1
TensorMultiply		1.2	1.2		1.2
TensorAdd		1.2	1.2		1.2
TensorSubtract		1.2	1.2		1.2
TensorMatrixMultiply		1.2	1.2		1.2
TensorTableLookup		1.2	1.2		1.2
TensorTranspose		1.2	1.2		1.2
Threshold			1.0		1.1
WarpAffine	1.3		1.0
WarpPerspective			1.0
WeightedAverage			1.3
Xor	1.3		1.0

表2-3 OpenVX视觉功能输出参数

视觉功能	U1	S8	U8	U16	S16	U32	F32	颜色	其它
AbsDiff			1.0		1.0.1
Add			1.0		1.0
And	1.3		1.0
BilateralFilter			1.2		1.2
Box3x3			1.0
CannyEdgeDetector	1.3		1.0
ChannelCombine								1.0
ChannelExtract			1.0
ColorConvert								1.0
ConvertDepth	1.3		1.0		1.0
Convolve			1.0		1.0
Copy (图像目标)									1.2
Dilate3x3	1.3		1.0
EqualizeHist			1.0
Erode3x3	1.3		1.0
FastCorners			1.0
Gaussian3x3			1.0
GaussianPyramid			1.0
HarrisCorners			1.0
HalfScaleGaussian			1.0
HarrisCorners						1.0
HOGCells		1.2			1.2
HOGFeatures		1.2			1.2
HoughLinesP									1.2
IntegralImage						1.0
LaplacianPyramid					1.1
LaplacianReconstruct			1.1
LBP			1.2
Magnitude					1.0
MatchTemplate			1.2
MeanStdDev							1.0
Median3x3	1.3		1.0
Max			1.2		1.2
Min			1.2		1.2
MinMaxLoc			1.0		1.0	1.0
Multiply			1.0		1.0
NonLinearFilter	1.3		1.1
NonMaxSuppression			1.2		1.2
Not	1.3		1.0
OpticalFlowPyrLK
Or	1.3		1.0
Phase			1.0
Remap			1.0
ScaleImage	1.3		1.0
Sobel3x3					1.0
Subtract			1.0		1.0
TableLookup			1.0		1.1
TensorMultiply		1.2	1.2		1.2
TensorAdd		1.2	1.2		1.2
TensorSubtract		1.2	1.2		1.2
TensorMatrixMultiply		1.2	1.2		1.2
TensorTableLookup		1.2	1.2		1.2
TensorTranspose		1.2	1.2		1.2
Threshold	1.3		1.0
WarpAffine	1.3		1.0
WarpPerspective			1.0
WeightedAverage			1.3
Xor	1.3		1.0

2. 参数排序约定

对于视觉函数，输入和输出参数排序，约定为以下模块：

1）强制性输入

2）可选输入

3）强制进出

4）可选输入/输出

5）必填输出

6）可选输出

已知的例外情况，包括以下模块：

1）vxConvertDepthNode,

2）vxuConvertDepth,

3）vxOpticalFlowPyrLKNode,

4）vxuOpticalFlowPyrLK,

5）vxScaleImageNode,

6）vxuScaleImage.