As a computation unit for processing images, it could resize image to predefined size.
It will not stretch or compress the content of image. However, to fit the new size, it crops or pads pixels. When it crops image, it performs a center-crop; when it pads pixels, it performs a zero-padding.
Public Constructors
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ResizeWithCropOrPadOp(int targetHeight, int targetWidth)
Creates a ResizeWithCropOrPadOp which could crop/pad images to specified size.
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Public Methods
| TensorImage |
apply(TensorImage image)
Applies the defined resizing with cropping or/and padding on given image and returns the
result.
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| int |
getOutputImageHeight(int inputImageHeight, int inputImageWidth)
Computes the height of the expected output image when input image size is given.
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| int |
getOutputImageWidth(int inputImageHeight, int inputImageWidth)
Computes the width of the expected output image when input image size is given.
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| 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.
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Inherited Methods
Public Constructors
public ResizeWithCropOrPadOp (int targetHeight, int targetWidth)
Creates a ResizeWithCropOrPadOp which could crop/pad images to specified size. It adopts center-crop and zero-padding.
Parameters
| targetHeight | The expected height of cropped/padded image. |
|---|---|
| targetWidth | The expected width of cropped/padded image. |
Public Methods
public TensorImage apply (TensorImage image)
Applies the defined resizing with cropping or/and padding 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.