Function cvcudaSIFTCreate

• Defined in File OpSIFT.h

Function Documentation

NVCVStatus cvcudaSIFTCreate(NVCVOperatorHandle *handle, int3 maxShape, int maxOctaveLayers)

Constructs and an instance of the SIFT operator.

Parameters:

• handle – [out] Where the operator instance handle will be written to.

  • Must not be NULL.

• maxShape – [in] Maximum shape of input tensor images as WxHxN, i.e. x=W y=H z=N of int3, where W=width, H=height and N=samples, or number of images in tensor.

  • N (z coordinate) must be >= 1 and <= 65535.

  • W and H (x and y) must be >= 2, and they must take into account if the input is to be expanded during execution time, NVCVSIFTFlagType.

• maxOctaveLayers – [in] Maximum layers per octave to be used by the operator, an octave is a level in the Gaussian pyramid containing input scale-space layers in the SIFT algorithm.

  • It must be >= 1 and <= 16.

Return values:

• NVCV_ERROR_INVALID_ARGUMENT – Handle is null.

• NVCV_ERROR_INVALID_ARGUMENT – An argument is outside valid range.

• NVCV_ERROR_OUT_OF_MEMORY – Not enough memory to create the operator.

• NVCV_SUCCESS – Operation executed successfully.