Image Wrapper classes

group NVCV_CPP_CUDATOOLS_IMAGEWRAP

template<typename T>
class ImageBatchVarShapeWrap

#include <ImageBatchVarShapeWrap.hpp>

Image batch var-shape wrapper class to wrap ImageBatchVarShapeDataStridedCuda.

ImageBatchVarShapeWrap is a wrapper of an image batch (or a list of images) of variable shapes. The template parameter T is the type of each element inside the wrapper, and it can be compound type to represent a pixel type, e.g. uchar4 for RGBA images.

 cudaStream_t stream;
 cudaStreamCreate(&stream);
 nvcv::ImageBatchVarShape imageBatch(samples);
auto *imageBatchData  = imageBatch.exportData<nvcv::ImageBatchVarShapeDataStridedCuda>(stream)
 nvcv::cuda::ImageBatchVarShapeWrap<uchar4> wrap(*imageBatchData);
 // Now wrap can be used in device code to access elements of the image batch via operator[] or ptr method.

Image batch var-shape wrapper class to wrap ImageBatchVarShapeDataStridedCuda.

This class is specialized for non-constant value type.

Template Parameters:

• T – Type (it can be const) of each element inside the image batch var-shape wrapper.

• T – Type (non-const) of each element inside the image batch var-shape wrapper.

Subclassed by nvcv::cuda::ImageBatchVarShapeWrapNHWC< T >

template<typename T>
class ImageBatchVarShapeWrap<const T>

#include <ImageBatchVarShapeWrap.hpp>

template<typename T>
class ImageBatchVarShapeWrapNHWC : private nvcv::cuda::ImageBatchVarShapeWrap<T>

#include <ImageBatchVarShapeWrap.hpp>

Image batch var-shape wrapper NHWC class to wrap ImageBatchVarShapeDataStridedCuda and number of channels.

This class handles number of channels as a separate run-time parameter instead of built-in T. It considers interleaved channels, where they appear in a packed sequence at the last dimension (thus NHWC). It also considers each image in the batch has a single plane.

Note

The class ImageBatchVarShapeWrap can be used with its template parameter T type as a compound type, where its number of elements yield the number of channels.

Template Parameters:

T – Type (it can be const) of each element inside this wrapper.