ai.djl.basicdataset

Class CaptchaDataset

java.lang.Object

ai.djl.training.dataset.RandomAccessDataset

ai.djl.basicdataset.CaptchaDataset

All Implemented Interfaces:

ai.djl.repository.dataset.PreparedDataset, ai.djl.repository.dataset.ZooDataset, ai.djl.training.dataset.Dataset, java.util.RandomAccess

public class CaptchaDataset
extends ai.djl.training.dataset.RandomAccessDataset
implements ai.djl.repository.dataset.ZooDataset

A Dataset featuring captcha images.

Each image is a 160x60 grayscale image featuring 5 or 6 digits where each digit ranges from 0-10. The dataset therefore features 6 labels. Each label ranges from 0-11 where 0-10 represent a recognized digit and 11 indicates that the value is not a digit (size 5 and not 6).

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	CaptchaDataset.Builder A builder for a CaptchaDataset.

Nested classes/interfaces inherited from class ai.djl.training.dataset.RandomAccessDataset

ai.djl.training.dataset.RandomAccessDataset.BaseBuilder<T extends ai.djl.training.dataset.RandomAccessDataset.BaseBuilder>

Nested classes/interfaces inherited from interface ai.djl.training.dataset.Dataset

ai.djl.training.dataset.Dataset.Usage

Field Summary

Fields

Modifier and Type	Field and Description
static int	CAPTCHA_LENGTH
static int	CAPTCHA_OPTIONS
static int	IMAGE_HEIGHT
static int	IMAGE_WIDTH

Fields inherited from class ai.djl.training.dataset.RandomAccessDataset

batchifier, device, executor, limit, pipeline, prefetchNumber, sampler, targetPipeline

Constructor Summary

Constructors

Constructor and Description
CaptchaDataset(CaptchaDataset.Builder builder) Creates a new instance of CaptchaDataset.

Method Summary

Modifier and Type	Method and Description
protected long	availableSize()
static CaptchaDataset.Builder	builder() Creates a builder to build a CaptchaDataset.
ai.djl.training.dataset.Record	get(ai.djl.ndarray.NDManager manager, long index)
ai.djl.repository.Artifact	getArtifact()
ai.djl.repository.MRL	getMrl()
ai.djl.repository.Repository	getRepository()
ai.djl.training.dataset.Dataset.Usage	getUsage()
boolean	isPrepared()
void	prepareData(ai.djl.training.dataset.Dataset.Usage usage)
void	setPrepared(boolean prepared)
void	useDefaultArtifact()

Methods inherited from class ai.djl.training.dataset.RandomAccessDataset

getData, getData, randomSplit, size

Methods inherited from class java.lang.Object

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

Methods inherited from interface ai.djl.repository.dataset.ZooDataset

prepare

Methods inherited from interface ai.djl.training.dataset.Dataset

getData

Methods inherited from interface ai.djl.repository.dataset.PreparedDataset

prepare

Field Detail

IMAGE_WIDTH

public static final int IMAGE_WIDTH

See Also:

Constant Field Values

IMAGE_HEIGHT

public static final int IMAGE_HEIGHT

See Also:

Constant Field Values

CAPTCHA_LENGTH

public static final int CAPTCHA_LENGTH

See Also:

Constant Field Values

CAPTCHA_OPTIONS

public static final int CAPTCHA_OPTIONS

See Also:

Constant Field Values

Constructor Detail

CaptchaDataset

public CaptchaDataset(CaptchaDataset.Builder builder)

Creates a new instance of CaptchaDataset.

Parameters:

builder - a builder with the necessary configurations

Method Detail

builder

public static CaptchaDataset.Builder builder()

Creates a builder to build a CaptchaDataset.

Returns:

a new builder

get

public ai.djl.training.dataset.Record get(ai.djl.ndarray.NDManager manager,
                                          long index)
                                   throws java.io.IOException

Specified by:

get in class ai.djl.training.dataset.RandomAccessDataset

Throws:

java.io.IOException

availableSize

protected long availableSize()

Specified by:

availableSize in class ai.djl.training.dataset.RandomAccessDataset

getMrl

public ai.djl.repository.MRL getMrl()

Specified by:

getMrl in interface ai.djl.repository.dataset.ZooDataset

getRepository

public ai.djl.repository.Repository getRepository()

Specified by:

getRepository in interface ai.djl.repository.dataset.ZooDataset

getArtifact

public ai.djl.repository.Artifact getArtifact()

Specified by:

getArtifact in interface ai.djl.repository.dataset.ZooDataset

getUsage

public ai.djl.training.dataset.Dataset.Usage getUsage()

Specified by:

getUsage in interface ai.djl.repository.dataset.ZooDataset

isPrepared

public boolean isPrepared()

Specified by:

isPrepared in interface ai.djl.repository.dataset.ZooDataset

setPrepared

public void setPrepared(boolean prepared)

Specified by:

setPrepared in interface ai.djl.repository.dataset.ZooDataset

useDefaultArtifact

public void useDefaultArtifact()
                        throws java.io.IOException

Specified by:

useDefaultArtifact in interface ai.djl.repository.dataset.ZooDataset

Throws:

java.io.IOException

prepareData

public void prepareData(ai.djl.training.dataset.Dataset.Usage usage)
                 throws java.io.IOException

Specified by:

prepareData in interface ai.djl.repository.dataset.ZooDataset

Throws:

java.io.IOException