org.datavec.image.transform

Class CropImageTransform

java.lang.Object

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

org.datavec.image.transform.CropImageTransform

All Implemented Interfaces:

ImageTransform

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

Crops images deterministically or randomly.

Author:

saudet

Field Summary

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

converter, currentImage, random

Constructor Summary

Constructors

Constructor and Description
CropImageTransform(int crop) Calls this(null, crop, crop, crop, crop).
CropImageTransform(int cropTop, int cropLeft, int cropBottom, int cropRight) Calls this(random, cropTop, cropLeft, cropBottom, cropRight).
CropImageTransform(Random random, int crop) Calls this(random, crop, crop, crop, crop).
CropImageTransform(Random random, int cropTop, int cropLeft, int cropBottom, int cropRight) Constructs an instance of the ImageTransform.

Method Summary

Modifier and Type	Method and Description
protected ImageWritable	doTransform(ImageWritable image, Random random) Takes an image and returns a transformed image.
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

CropImageTransform

public CropImageTransform(int crop)

Calls this(null, crop, crop, crop, crop).

CropImageTransform

public CropImageTransform(Random random,
                          int crop)

Calls this(random, crop, crop, crop, crop).

CropImageTransform

public CropImageTransform(int cropTop,
                          int cropLeft,
                          int cropBottom,
                          int cropRight)

Calls this(random, cropTop, cropLeft, cropBottom, cropRight).

CropImageTransform

public CropImageTransform(Random random,
                          int cropTop,
                          int cropLeft,
                          int cropBottom,
                          int cropRight)

Constructs an instance of the ImageTransform.

Parameters:

random - object to use (or null for deterministic)

cropTop - maximum cropping of the top of the image (pixels)

cropLeft - maximum cropping of the left of the image (pixels)

cropBottom - maximum cropping of the bottom of the image (pixels)

cropRight - maximum cropping of the right of the image (pixels)

Method Detail

doTransform

protected ImageWritable doTransform(ImageWritable image,
                                    Random random)

Takes an image and returns a transformed image. Uses the random object in the case of random transformations.

Specified by:

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

Parameters:

image - to transform, null == end of stream

random - object to use (or null for deterministic)

Returns:

transformed image

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