#hbVPWarpPerspective

typedef struct {
  float transformMatrix[9];
  int8_t interpolation;
  int8_t borderType;
  uint8_t borderValue;
  int8_t isInverse;
} hbVPWarpPerspectiveParam;

WarpPerspective operator parameter.

• Member

  Member Name	Description
  transformMatrix[9]	WarpPerspective transformation matrix, 3X3 matrix.
  interpolation	Interpolation types in WarpPerspective, support NEAREST and LINEAR types in hbVPInterpolationType.
  borderType	Reserved parameter.
  borderValue	Reserved parameter.
  isInverse	Flag whether transformMatrix is an inverse matrix, non-zero means inverse matrix (src = M * dst), 0 means positive matrix (dst = M * src)

int32_t hbVPWarpPerspective(hbUCPTaskHandle_t *taskHandle,
                            hbVPImage *dstImg,
                            hbVPImage const *srcImg,
                            hbVPPerspectiveParam const *perspectiveParam);

The API for calling the WarpPerspective.

• Parameter
  • [out] taskHandle Task handles are responsible for the interaction of the operator with the UCP architecture.
  • [out] dstImg The output picture, type, format and size are the same as the input picture.
  • [in] srcImg The input picture type supports U8C1 and format supports Y and nv12.
  • [in] perspectiveParam Operator parameter.
• Return Value
  • Return 0 means the API was successfully executed, otherwise the execution failed.