ai.djl.modality.cv.translator

Class YoloV5Translator

java.lang.Object

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

ai.djl.modality.cv.translator.ObjectDetectionTranslator

ai.djl.modality.cv.translator.YoloV5Translator

All Implemented Interfaces:

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

public class YoloV5Translator
extends ObjectDetectionTranslator

A translator for YoloV5 models. This was tested with ONNX exported Yolo models. For details check here: https://github.com/ultralytics/yolov5

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	YoloV5Translator.Builder The builder for YoloV5Translator.
static class	YoloV5Translator.YoloOutputType A enum represents the Yolo output type.

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

ObjectDetectionTranslator.ObjectDetectionBuilder<T extends ObjectDetectionTranslator.ObjectDetectionBuilder>

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 inherited from class ai.djl.modality.cv.translator.ObjectDetectionTranslator

classes, imageHeight, imageWidth, threshold

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	YoloV5Translator(YoloV5Translator.Builder builder) Constructs an ImageTranslator with the provided builder.

Method Summary

Modifier and Type	Method and Description
protected double	boxIntersection(Rectangle a, Rectangle b)
protected double	boxIou(Rectangle a, Rectangle b)
protected double	boxUnion(Rectangle a, Rectangle b)
static YoloV5Translator.Builder	builder() Creates a builder to build a YoloV5Translator.
static YoloV5Translator.Builder	builder(java.util.Map<java.lang.String,?> arguments) Creates a builder to build a YoloV5Translator with specified arguments.
protected DetectedObjects	nms(java.util.List<ai.djl.modality.cv.translator.YoloV5Translator.IntermediateResult> list)
protected double	overlap(double x1, double w1, double x2, double w2)
DetectedObjects	processOutput(TranslatorContext ctx, NDList list) Processes the output NDList to the corresponding output object.

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

prepare

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

getBatchifier, getBooleanValue, getFloatValue, getIntValue, getPipeline, getStringValue, processInput

Methods inherited from class java.lang.Object

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

Constructor Detail

YoloV5Translator

protected YoloV5Translator(YoloV5Translator.Builder builder)

Constructs an ImageTranslator with the provided builder.

Parameters:

builder - the data to build with

Method Detail

builder

public static YoloV5Translator.Builder builder()

Creates a builder to build a YoloV5Translator.

Returns:

a new builder

builder

public static YoloV5Translator.Builder builder(java.util.Map<java.lang.String,?> arguments)

Creates a builder to build a YoloV5Translator with specified arguments.

Parameters:

arguments - arguments to specify builder options

Returns:

a new builder

boxIntersection

protected double boxIntersection(Rectangle a,
                                 Rectangle b)

boxIou

protected double boxIou(Rectangle a,
                        Rectangle b)

boxUnion

protected double boxUnion(Rectangle a,
                          Rectangle b)

nms

protected DetectedObjects nms(java.util.List<ai.djl.modality.cv.translator.YoloV5Translator.IntermediateResult> list)

overlap

protected double overlap(double x1,
                         double w1,
                         double x2,
                         double w2)

processOutput

public DetectedObjects processOutput(TranslatorContext ctx,
                                     NDList list)

Processes the output NDList to the corresponding output object.

Parameters:

ctx - the toolkit used for post-processing

list - the output NDList after inference

Returns:

the output object of expected type