Class Perspective
Defined in File vision.h
Inheritance Relationships
Base Type
public mindspore::dataset::TensorTransform
(Class TensorTransform)
Class Documentation
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class Perspective : public mindspore::dataset::TensorTransform
Perform perspective transform on the image.
Public Functions
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Perspective(const std::vector<std::vector<int32_t>> &start_points, const std::vector<std::vector<int32_t>> &end_points, InterpolationMode interpolation)
Constructor.
- Parameters
start_points – [in] List containing four lists of two integers corresponding to four corners [top-left, top-right, bottom-right, bottom-left] of the original image.
end_points – [in] List containing four lists of two integers corresponding to four corners [top-left, top-right, bottom-right, bottom-left] of the transformed image.
interpolation – [in] An enum for the mode of interpolation. Default: InterpolationMode::kLinear.
InterpolationMode::kNearestNeighbour, Interpolation method is nearest-neighbor interpolation.
InterpolationMode::kLinear, Interpolation method is blinear interpolation.
InterpolationMode::kCubic, Interpolation method is bicubic interpolation.
InterpolationMode::kArea, Interpolation method is pixel area interpolation.
InterpolationMode::kCubicPil, Interpolation method is bicubic interpolation like implemented in pillow.
Example/* Define operations */ auto decode_op = vision::Decode(); std::vector<std::vector<int32_t>> start_points = {{0, 0}, {1, 0}, {1, 1}, {0, 1}}; std::vector<std::vector<int32_t>> end_points = {{0, 2}, {2, 0}, {2, 2}, {0, 2}}; auto perspective_op = vision::Perspective(start_points, end_points, InterpolationMode::kLinear); /* dataset is an instance of Dataset object */ dataset = dataset->Map({decode_op, perspective_op}, // operations {"image"}); // input columns
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~Perspective() override = default
Destructor.
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Perspective(const std::vector<std::vector<int32_t>> &start_points, const std::vector<std::vector<int32_t>> &end_points, InterpolationMode interpolation)