org.datavec.image.transform

Class RotateImageTransform

java.lang.Object

org.datavec.image.transform.BaseImageTransform<org.bytedeco.javacpp.opencv_core.Mat>

org.datavec.image.transform.RotateImageTransform

All Implemented Interfaces:

ImageTransform

public class RotateImageTransform
extends BaseImageTransform<org.bytedeco.javacpp.opencv_core.Mat>

Rotates and scales images deterministically or randomly. Calls org.bytedeco.javacpp.opencv_imgproc#warpAffine(Mat, Mat, Mat, Size, int, int, Scalar) with given properties (interMode, borderMode, and borderValue).

Author:

saudet

Field Summary

Fields inherited from class org.datavec.image.transform.BaseImageTransform

converter, currentImage, random

Constructor Summary

Constructors

Constructor and Description
RotateImageTransform(float angle) Calls this(null, 0, 0, angle, 0).
RotateImageTransform(float centerx, float centery, float angle, float scale) Constructs an instance of the ImageTransform.
RotateImageTransform(Random random, float angle) Calls this(random, 0, 0, angle, 0).
RotateImageTransform(Random random, float centerx, float centery, float angle, float scale) Constructs an instance of the ImageTransform.

Method Summary

Modifier and Type	Method and Description
protected ImageWritable	doTransform(ImageWritable image, Random random)
float[]	query(float... coordinates) Transforms the given coordinates using the parameters that were used to transform the last image.

Methods inherited from class org.datavec.image.transform.BaseImageTransform

getCurrentImage, transform, transform

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RotateImageTransform

public RotateImageTransform(float angle)

Calls this(null, 0, 0, angle, 0).

RotateImageTransform

public RotateImageTransform(Random random,
                            float angle)

Calls this(random, 0, 0, angle, 0).

RotateImageTransform

public RotateImageTransform(float centerx,
                            float centery,
                            float angle,
                            float scale)

Constructs an instance of the ImageTransform.

Parameters:

centerx - maximum deviation in x of center of rotation (relative to image center)

centery - maximum deviation in y of center of rotation (relative to image center)

angle - maximum rotation (degrees)

scale - maximum scaling (relative to 1)

RotateImageTransform

public RotateImageTransform(Random random,
                            float centerx,
                            float centery,
                            float angle,
                            float scale)

Constructs an instance of the ImageTransform.

Parameters:

random - object to use (or null for deterministic)

centerx - maximum deviation in x of center of rotation (relative to image center)

centery - maximum deviation in y of center of rotation (relative to image center)

angle - maximum rotation (degrees)

scale - maximum scaling (relative to 1)

Method Detail

doTransform

protected ImageWritable doTransform(ImageWritable image,
                                    Random random)

Specified by:

doTransform in class BaseImageTransform<org.bytedeco.javacpp.opencv_core.Mat>

query

public float[] query(float... coordinates)

Description copied from interface: ImageTransform

Transforms the given coordinates using the parameters that were used to transform the last image.

Specified by:

query in interface ImageTransform

Overrides:

query in class BaseImageTransform<org.bytedeco.javacpp.opencv_core.Mat>

Parameters:

coordinates - to transforms (x1, y1, x2, y2, ...)

Returns:

transformed coordinates