Package ai.djl.modality.cv.translator

Class ObjectDetectionTranslator

java.lang.Object

ai.djl.modality.cv.translator.BaseImageTranslator<DetectedObjects>

ai.djl.modality.cv.translator.ObjectDetectionTranslator

All Implemented Interfaces:

PostProcessor<DetectedObjects>, PreProcessor<Image>, Translator<Image,DetectedObjects>

Direct Known Subclasses:

SingleShotDetectionTranslator, YoloTranslator, YoloV5Translator

public abstract class ObjectDetectionTranslator
extends BaseImageTranslator<DetectedObjects>

A BaseImageTranslator that post-process the NDArray into DetectedObjects with boundaries.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	ObjectDetectionTranslator.ObjectDetectionBuilder<T extends ObjectDetectionTranslator.ObjectDetectionBuilder>	The base builder for the object detection translator.

Nested classes/interfaces inherited from class ai.djl.modality.cv.translator.BaseImageTranslator

BaseImageTranslator.BaseBuilder<T extends BaseImageTranslator.BaseBuilder>, BaseImageTranslator.ClassificationBuilder<T extends BaseImageTranslator.BaseBuilder>, BaseImageTranslator.SynsetLoader

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	applyRatio
protected List<String>	classes
protected double	imageHeight
protected double	imageWidth
protected float	threshold

Fields inherited from class ai.djl.modality.cv.translator.BaseImageTranslator

pipeline

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	ObjectDetectionTranslator(ObjectDetectionTranslator.ObjectDetectionBuilder<?> builder)	Creates the ObjectDetectionTranslator from the given builder.

Method Summary

Modifier and Type	Method	Description
void	prepare(TranslatorContext ctx)	Prepares the translator with the manager and model to use.

Methods inherited from class ai.djl.modality.cv.translator.BaseImageTranslator

getBatchifier, processInput

Methods inherited from class java.lang.Object

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

Methods inherited from interface ai.djl.translate.PostProcessor

processOutput

Methods inherited from interface ai.djl.translate.Translator

batchProcessInput, batchProcessOutput, getExpansions

Field Details

threshold

protected float threshold

classes

protected List<String> classes

imageWidth

protected double imageWidth

imageHeight

protected double imageHeight

applyRatio

protected boolean applyRatio

Constructor Details

ObjectDetectionTranslator

protected ObjectDetectionTranslator(ObjectDetectionTranslator.ObjectDetectionBuilder<?> builder)

Creates the ObjectDetectionTranslator from the given builder.

Parameters:

builder - the builder for the translator

Method Details

prepare

public void prepare(TranslatorContext ctx)
             throws Exception

Prepares the translator with the manager and model to use.

Parameters:

ctx - the context for the Predictor.

Throws:

Exception - if there is an error for preparing the translator