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Rot90Op

public class Rot90Op

Rotates image counter-clockwise.

Public Constructors

Rot90Op()
Creates a Rot90 Op which will rotate image by 90 degree counter-clockwise.
Rot90Op(int k)
Creates a Rot90 Op which will rotate image by 90 degree for k times counter-clockwise.

Public Methods

TensorImage
apply(TensorImage image)
Applies the defined rotation on given image and returns the result.
int
getOutputImageHeight(int inputImageHeight, int inputImageWidth)
Computes the height of the expected output image when input image size is given.
int
getOutputImageWidth(int inputImageHeight, int inputImageWidth)
Computes the width of the expected output image when input image size is given.
PointF
inverseTransform(PointF point, int inputImageHeight, int inputImageWidth)
Transforms a point from coordinates system of the result image back to the one of the input image.

Inherited Methods

Public Constructors

public Rot90Op ()

Creates a Rot90 Op which will rotate image by 90 degree counter-clockwise.

public Rot90Op (int k)

Creates a Rot90 Op which will rotate image by 90 degree for k times counter-clockwise.

Parameters
k The number of times the image is rotated by 90 degrees. If it's positive, the image will be rotated counter-clockwise. If it's negative, the op will rotate image clockwise.

Public Methods

public TensorImage apply (TensorImage image)

Applies the defined rotation on given image and returns the result.

Note: the content of input image will change, and image is the same instance with the output.

Parameters
image input image.
Returns
  • output image.

public int getOutputImageHeight (int inputImageHeight, int inputImageWidth)

Computes the height of the expected output image when input image size is given.

Parameters
inputImageHeight
inputImageWidth

public int getOutputImageWidth (int inputImageHeight, int inputImageWidth)

Computes the width of the expected output image when input image size is given.

Parameters
inputImageHeight
inputImageWidth

public PointF inverseTransform (PointF point, int inputImageHeight, int inputImageWidth)

Transforms a point from coordinates system of the result image back to the one of the input image.

Parameters
point the point from the result coordinates system.
inputImageHeight the height of input image.
inputImageWidth the width of input image.
Returns
  • the point with the coordinates from the coordinates system of the input image.