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cvCalcMotionGradient
Calculates a gradient orientation of a motion history image.
| Name | Type | Range | Description | |
|---|---|---|---|---|
 |
inMhi | Image | REAL, single-channel motion history image. | |
|
inDelta1 | Real | 0.0 -  |
Minimal ,or maximal, allowed difference between mhi values within a pixel neighbourhood. |
|
inDelta2 | Real | 0.0 - |
Maximal ,or minimal, allowed difference between mhi values within a pixel neighbourhood. |
|
inApertureSize | Integer | 0 - |
Aperture size of sobel operator |
 |
outOrientation | Image | Output motion gradient orientation image that has the same type and the same size as mhi. Each pixel of the image is a motion orientation, from 0 to 360 degrees. | |
|
outMask | Region | Output region of correct motion gradient data. | |
Errors
This filter can throw an exception to report error. Read how to deal with errors here: Error Handling
| Error type | Description |
|---|---|
| DomainError | History image must be REAL single-channel in cvCalcMotionGradient. |
| DomainError | Both inDelta1 and inDelta2 must be greater than 0.0 in cvCalcMotionGradient. |
Complexity Level
This filter is available on Basic Complexity Level.
