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Calculates the perspective transform from four pairs of corresponding points.

Name | Type | Description | |
---|---|---|---|

inSrc | Point2DArray | Coordinates of quadrangle vertices in the source image. | |

inDst | Point2DArray | Coordinates of the corresponding quadrangle vertices in the destination image. | |

outM | Matrix | Calculated transformation matrix. |

### Description

The function calculates the 3x3 matrix of perspective transform, that can be applied to an image using **cvWarpPerspective** filter.

### Examples

### Errors

This filter can throw an exception to report error. Read how to deal with errors here: Error Handling

Error type | Description |
---|---|

DomainError |
Each of input array must contain four points in cvGetPerspectiveTransform. |

### User Proficiency Level

This filter is available on **Basic** User Proficiency Level.