Cvt Color

group Cvt Color

Functions

NVCVStatus cvcudaCvtColorCreate(NVCVOperatorHandle *handle)

Constructs an instance of the CvtColor (convert color operation).

Parameters:

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

  • Must not be NULL.

Return values:

  • NVCV_ERROR_INVALID_ARGUMENT – Handle is null.

  • NVCV_ERROR_OUT_OF_MEMORY – Not enough memory to create the operator.

  • NVCV_SUCCESS – Operation executed successfully.

NVCVStatus cvcudaCvtColorSubmit(NVCVOperatorHandle handle, cudaStream_t stream, NVCVTensorHandle in, NVCVTensorHandle out, NVCVColorConversionCode code)

Executes the CvtColor (convert color) operation on the given cuda stream. This operation does not wait for completion.

Limitations:

Input: Data Layout: [kNHWC, kHWC, kNCHW, kCHW] Channels: [1, 3, 4] for kNCHW/kCHW planar tensors; var-shape planar images require RGB8p or RGBA8p compatible conversion codes. Data Type: [U8, S8, U16, S16, S32, F16, F32, F64] depending on conversion code.

Output: Data Layout: [kNHWC, kHWC, kNCHW, kCHW] Channels: [1, 3, 4] for kNCHW/kCHW planar tensors; var-shape planar images require RGB8p or RGBA8p compatible conversion codes. Data Type: Same base type as input, depending on conversion code.

Notes: Planar kNCHW/kCHW support excludes subsampled YUV420 and packed YUV422 conversion codes.

Supported backends: 

 Backend       | Supported
 ------------- | ---------
 CUDA          | Yes
 CPU           | No

Performance characteristics: 

 Input         | Supported
 ------------- | ---------
 Data Layout   | Yes
 Data Type     | Yes
 Channels      | Yes

Parameters:

  • handle – [in] Handle to the operator.

    • Must not be NULL.

  • stream – [in] Handle to a valid CUDA stream.

  • in – [in] Input tensor.

  • out – [out] Output tensor.

  • code – [in] Color conversion code, NVCVColorConversionCode.

Return values:

  • NVCV_ERROR_INVALID_ARGUMENT – Some parameter is outside valid range.

  • NVCV_ERROR_INTERNAL – Internal error in the operator, invalid types passed in.

  • NVCV_SUCCESS – Operation executed successfully.

NVCVStatus cvcudaCvtColorVarShapeSubmit(NVCVOperatorHandle handle, cudaStream_t stream, NVCVImageBatchHandle in, NVCVImageBatchHandle out, NVCVColorConversionCode code)