hi_mpi_vpc_get_rotation_matrix
The
The
Description
Obtains the rotation matrix required for affine transformation.
Prototype
hi_s32 hi_mpi_vpc_get_rotation_matrix(hi_float_point center_point, hi_double angle, hi_double scale, hi_transform_matrix *matrix)
Parameters
Parameter |
Input/Output |
Description |
|---|---|---|
center_point |
Input |
Rotation center point of the input image. |
angle |
Input |
Rotation angle. A positive value indicates anticlockwise rotation. |
scale |
Input |
Resizing parameter. If the value of scale is greater than 1, the image is resized up. If the value of scale is less than 1, the image is resized down. |
matrix |
Output |
Rotation matrix for affine transformation. |
Returns
- 0: success
- Other values: failure (VPC Return Codes)
Parent topic: VPC