This chapter introduces you to the framework of MMDetection, and provides links to detailed tutorials about MMDetection.
What is MMDetection¶
MMDetection is an object detection toolbox that contains a rich set of object detection, instance segmentation, and panoptic segmentation methods as well as related components and modules, and below is its whole framework:
MMDetection consists of 7 main parts, apis, structures, datasets, models, engine, evaluation and visualization.
apis provides high-level APIs for model inference.
structures provides data structures like bbox, mask, and DetDataSample.
datasets supports various dataset for object detection, instance segmentation, and panoptic segmentation.
transforms contains a lot of useful data augmentation transforms.
samplers defines different data loader sampling strategy.
models is the most vital part for detectors and contains different components of a detector.
detectors defines all of the detection model classes.
data_preprocessors is for preprocessing the input data of the model.
backbones contains various backbone networks.
necks contains various neck components.
dense_heads contains various detection heads that perform dense predictions.
roi_heads contains various detection heads that predict from RoIs.
seg_heads contains various segmentation heads.
losses contains various loss functions.
task_modules provides modules for detection tasks. E.g. assigners, samplers, box coders, and prior generators.
layers provides some basic neural network layers.
engine is a part for runtime components.
runner provides extensions for MMEngine’s runner.
schedulers provides schedulers for adjusting optimization hyperparameters.
optimizers provides optimizers and optimizer wrappers.
hooks provides various hooks of the runner.
evaluation provides different metrics for evaluating model performance.
visualization is for visualizing detection results.
How to Use this Guide¶
Here is a detailed step-by-step guide to learn more about MMDetection:
For installation instructions, please see get_started.
Refer to the below tutorials for the basic usage of MMDetection.
Refer to the below tutorials to dive deeper:
For users of MMDetection 2.x version, we provide a guide to help you adapt to the new version. You can find it in the migration guide.