Class DIV2KDataset

• Defined in File datasets.h

Inheritance Relationships

Base Type

• public mindspore::dataset::Dataset (Class Dataset)

Class Documentation

class DIV2KDataset : public mindspore::dataset::Dataset

A source dataset for reading and parsing DIV2K dataset.

Public Functions

DIV2KDataset(const std::vector<char> &dataset_dir, const std::vector<char> &usage, const std::vector<char> &downgrade, int32_t scale, bool decode, const std::shared_ptr<Sampler> &sampler, const std::shared_ptr<DatasetCache> &cache)

Constructor of DIV2KDataset.

Parameters

• dataset_dir – [in] The dataset dir to be read.

• usage – [in] The type of dataset. Acceptable usages include “train”, “valid” or “all”.

• downgrade – [in] The mode of downgrade. Acceptable downgrades include “bicubic”, “unknown”, “mild”, “difficult” or “wild”.

• scale – [in] The scale of downgrade. Acceptable scales include 2, 3, 4 or 8.

• decode – [in] Decode the images after reading.

• sampler – [in] Shared pointer to a sampler object used to choose samples from the dataset. If sampler is not given, a RandomSampler will be used to randomly iterate the entire dataset.

• cache – [in] Tensor cache to use.

DIV2KDataset(const std::vector<char> &dataset_dir, const std::vector<char> &usage, const std::vector<char> &downgrade, int32_t scale, bool decode, const Sampler *sampler, const std::shared_ptr<DatasetCache> &cache)

Constructor of DIV2KDataset.

Parameters

• dataset_dir – [in] The dataset dir to be read.

• usage – [in] The type of dataset. Acceptable usages include “train”, “valid” or “all”.

• downgrade – [in] The mode of downgrade. Acceptable downgrades include “bicubic”, “unknown”, “mild”, “difficult” or “wild”.

• scale – [in] The scale of downgrade. Acceptable scales include 2, 3, 4 or 8.

• decode – [in] Decode the images after reading.

• sampler – [in] Raw pointer to a sampler object used to choose samples from the dataset.

• cache – [in] Tensor cache to use.

DIV2KDataset(const std::vector<char> &dataset_dir, const std::vector<char> &usage, const std::vector<char> &downgrade, int32_t scale, bool decode, const std::reference_wrapper<Sampler> &sampler, const std::shared_ptr<DatasetCache> &cache)

Constructor of DIV2KDataset.

Parameters

• dataset_dir – [in] The dataset dir to be read.

• usage – [in] The type of dataset. Acceptable usages include “train”, “valid” or “all”.

• downgrade – [in] The mode of downgrade. Acceptable downgrades include “bicubic”, “unknown”, “mild”, “difficult” or “wild”.

• scale – [in] The scale of downgrade. Acceptable scales include 2, 3, 4 or 8.

• decode – [in] Decode the images after reading.

• sampler – [in] Sampler object used to choose samples from the dataset.

• cache – [in] Tensor cache to use.

~DIV2KDataset() override = default

Destructor of DIV2KDataset.