vpc_get_rotation_matrix

Product	Supported (√/x)
Atlas A3 training products/Atlas A3 inference products	√
Atlas A2 training products/Atlas A2 inference products	√
Atlas training products	x
Atlas inference products	x
Atlas 200I/500 A2 inference products	√

Obtains the rotation matrix required for affine transformation.

C Prototype

hi_s32 hi_mpi_vpc_get_rotation_matrix(hi_float_point center_point, hi_double angle, hi_double scale, hi_transform_matrix *matrix)

Python Function

matrix, ret = acl.himpi.vpc_get_rotation_matrix(center_point, angle, scale)

Parameter	Description
center_point	Dict, dictionary of the rotation center point of the input image. For details, see hi_float_point.
angle	Float, rotation angle. A positive value indicates anticlockwise rotation.
scale	Float, 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.

Return Value	Description
matrix	Dict, dictionary of the matrix required for affine transformation. Set matrix_type based on the actual input matrix. For details, see hi_transform_matrix.
ret	Int, error code. 0: success. Other values: failures. For details, see VPC Return Codes.

Parent topic: VPC APIs