Changelog of v1.x¶

v1.0.0rc5 (06/01/2023)¶

Highlights¶

Two models, Aster and SVTR, are added to our model zoo. The full implementation of ABCNet is also available now.
Dataset Preparer supports 5 more datasets: CocoTextV2, FUNSD, TextOCR, NAF, SROIE.
We have 4 more text recognition transforms, and two helper transforms. See https://github.com/open-mmlab/mmocr/pull/1646 https://github.com/open-mmlab/mmocr/pull/1632 https://github.com/open-mmlab/mmocr/pull/1645 for details.
The transform, FixInvalidPolygon, is getting smarter at dealing with invalid polygons, and now capable of handling more weird annotations. As a result, a complete training cycle on TotalText dataset can be performed bug-free. The weights of DBNet and FCENet pretrained on TotalText are also released.

New Features & Enhancements¶

Update ic15 det config according to DataPrepare by @Harold-lkk in https://github.com/open-mmlab/mmocr/pull/1617
Refactor icdardataset metainfo to lowercase. by @Harold-lkk in https://github.com/open-mmlab/mmocr/pull/1620
Add ASTER Encoder by @Mountchicken in https://github.com/open-mmlab/mmocr/pull/1239
Add ASTER decoder by @Mountchicken in https://github.com/open-mmlab/mmocr/pull/1625
Add ASTER config by @Mountchicken in https://github.com/open-mmlab/mmocr/pull/1238
Update ASTER config by @Mountchicken in https://github.com/open-mmlab/mmocr/pull/1629
Support browse_dataset.py to visualize original dataset by @xinke-wang in https://github.com/open-mmlab/mmocr/pull/1503
Add CocoTextv2 to dataset preparer by @xinke-wang in https://github.com/open-mmlab/mmocr/pull/1514
Add Funsd to dataset preparer by @xinke-wang in https://github.com/open-mmlab/mmocr/pull/1550
Add TextOCR to Dataset Preparer by @xinke-wang in https://github.com/open-mmlab/mmocr/pull/1543
Refine example projects and readme by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1628
Enhance FixInvalidPolygon, add RemoveIgnored transform by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1632
ConditionApply by @Harold-lkk in https://github.com/open-mmlab/mmocr/pull/1646
Add NAF to dataset preparer by @Mountchicken in https://github.com/open-mmlab/mmocr/pull/1609
Add SROIE to dataset preparer by @FerryHuang in https://github.com/open-mmlab/mmocr/pull/1639
Add svtr decoder by @willpat1213 in https://github.com/open-mmlab/mmocr/pull/1448
Add missing unit tests by @Mountchicken in https://github.com/open-mmlab/mmocr/pull/1651
Add svtr encoder by @willpat1213 in https://github.com/open-mmlab/mmocr/pull/1483
ABCNet train by @Harold-lkk in https://github.com/open-mmlab/mmocr/pull/1610
Totaltext cfgs for DB and FCE by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1633
Add Aliases to models by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1611
SVTR transforms by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1645
Add SVTR framework and configs by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1621
Issue Template by @Harold-lkk in https://github.com/open-mmlab/mmocr/pull/1663

Docs¶

Add Chinese translation for browse_dataset.py by @xinke-wang in https://github.com/open-mmlab/mmocr/pull/1647
updata abcnet doc by @Harold-lkk in https://github.com/open-mmlab/mmocr/pull/1658
update the dbnetpp`s readme file by @zhuyue66 in https://github.com/open-mmlab/mmocr/pull/1626

Bug Fixes¶

nn.SmoothL1Loss beta can not be zero in PyTorch 1.13 version by @Harold-lkk in https://github.com/open-mmlab/mmocr/pull/1616
ctc loss bug if target is empty by @Harold-lkk in https://github.com/open-mmlab/mmocr/pull/1618
Add torch 1.13 by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1619
Remove outdated tutorial link by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1627
Dev 1.x some doc mistakes by @KevinNuNu in https://github.com/open-mmlab/mmocr/pull/1630
Support custom font to visualize some languages (e.g. Korean) by @ProtossDragoon in https://github.com/open-mmlab/mmocr/pull/1567
db_module_loss，negative number encountered in sqrt by @KevinNuNu in https://github.com/open-mmlab/mmocr/pull/1640
Use int instead of np.int by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1636
Remove support for py3.6 by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1660

New Contributors¶

@zhuyue66 made their first contribution in https://github.com/open-mmlab/mmocr/pull/1626
@KevinNuNu made their first contribution in https://github.com/open-mmlab/mmocr/pull/1630
@FerryHuang made their first contribution in https://github.com/open-mmlab/mmocr/pull/1639
@willpat1213 made their first contribution in https://github.com/open-mmlab/mmocr/pull/1448

Full Changelog: https://github.com/open-mmlab/mmocr/compare/v1.0.0rc4…v1.0.0rc5

v1.0.0rc4 (06/12/2022)¶

Highlights¶

Dataset Preparer can automatically generate base dataset configs at the end of the preparation process, and supports 6 more datasets: IIIT5k, CUTE80, ICDAR2013, ICDAR2015, SVT, SVTP.
Introducing our projects/ folder - implementing new models and features into OpenMMLab’s algorithm libraries has long been complained to be troublesome due to the rigorous requirements on code quality, which could hinder the fast iteration of SOTA models and might discourage community members from sharing their latest outcome here. We now introduce projects/ folder, where some experimental features, frameworks and models can be placed, only needed to satisfy the minimum requirement on the code quality. Everyone is welcome to post their implementation of any great ideas in this folder! We also add the first example project to illustrate what we expect a good project to have (check out the raw content of README.md for more info!).
Inside the projects/ folder, we are releasing the preview version of ABCNet, which is the first implementation of text spotting models in MMOCR. It’s inference-only now, but the full implementation will be available very soon.

New Features & Enhancements¶

Add SVT to dataset preparer by @xinke-wang in https://github.com/open-mmlab/mmocr/pull/1521
Polish bbox2poly by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1532
Add SVTP to dataset preparer by @xinke-wang in https://github.com/open-mmlab/mmocr/pull/1523
Iiit5k converter by @Harold-lkk in https://github.com/open-mmlab/mmocr/pull/1530
Add cute80 to dataset preparer by @xinke-wang in https://github.com/open-mmlab/mmocr/pull/1522
Add IC13 preparer by @xinke-wang in https://github.com/open-mmlab/mmocr/pull/1531
Add ‘Projects/’ folder, and the first example project by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1524
Rename to {dataset-name}_task_train/test by @Harold-lkk in https://github.com/open-mmlab/mmocr/pull/1541
Add print_config.py to the tools by @IncludeMathH in https://github.com/open-mmlab/mmocr/pull/1547
Add get_md5 by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1553
Add config generator by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1552
Support IC15_1811 by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1556
Update CT80 config by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1555
Add config generators to all textdet and textrecog configs by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1560
Refactor TPS by @Mountchicken in https://github.com/open-mmlab/mmocr/pull/1240
Add TextSpottingConfigGenerator by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1561
Add common typing by @Harold-lkk in https://github.com/open-mmlab/mmocr/pull/1596
Update textrecog config and readme by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1597
Support head loss or postprocessor is None for only infer by @Harold-lkk in https://github.com/open-mmlab/mmocr/pull/1594
Textspotting datasample by @Harold-lkk in https://github.com/open-mmlab/mmocr/pull/1593
Simplify mono_gather by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1588
ABCNet v1 infer by @Harold-lkk in https://github.com/open-mmlab/mmocr/pull/1598

Docs¶

Add Chinese Guidance on How to Add New Datasets to Dataset Preparer by @xinke-wang in https://github.com/open-mmlab/mmocr/pull/1506
Update the qq group link by @vansin in https://github.com/open-mmlab/mmocr/pull/1569
Collapse some sections; update logo url by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1571
Update dataset preparer (CN) by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1591

Bug Fixes¶

Fix two bugs in dataset preparer by @xinke-wang in https://github.com/open-mmlab/mmocr/pull/1513
Register bug of CLIPResNet by @jyshee in https://github.com/open-mmlab/mmocr/pull/1517
Being more conservative on Dataset Preparer by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1520
python -m pip upgrade in windows by @Harold-lkk in https://github.com/open-mmlab/mmocr/pull/1525
Fix wildreceipt metafile by @xinke-wang in https://github.com/open-mmlab/mmocr/pull/1528
Fix Dataset Preparer Extract by @xinke-wang in https://github.com/open-mmlab/mmocr/pull/1527
Fix ICDARTxtParser by @xinke-wang in https://github.com/open-mmlab/mmocr/pull/1529
Fix Dataset Zoo Script by @xinke-wang in https://github.com/open-mmlab/mmocr/pull/1533
Fix crop without padding and recog metainfo delete unuse info by @Harold-lkk in https://github.com/open-mmlab/mmocr/pull/1526
Automatically create nonexistent directory for base configs by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1535
Change mmcv.dump to mmengine.dump by @ProtossDragoon in https://github.com/open-mmlab/mmocr/pull/1540
mmocr.utils.typing -> mmocr.utils.typing_utils by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1538
Wildreceipt tests by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1546
Fix judge exist dir by @Harold-lkk in https://github.com/open-mmlab/mmocr/pull/1542
Fix IC13 textdet config by @xinke-wang in https://github.com/open-mmlab/mmocr/pull/1563
Fix IC13 textrecog annotations by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1568
Auto scale lr by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1584
Fix icdar data parse for text containing separator by @Harold-lkk in https://github.com/open-mmlab/mmocr/pull/1587
Fix textspotting ut by @Harold-lkk in https://github.com/open-mmlab/mmocr/pull/1599
Fix TextSpottingConfigGenerator and TextSpottingDataConverter by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1604
Keep E2E Inferencer output simple by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1559

New Contributors¶

@jyshee made their first contribution in https://github.com/open-mmlab/mmocr/pull/1517
@ProtossDragoon made their first contribution in https://github.com/open-mmlab/mmocr/pull/1540
@IncludeMathH made their first contribution in https://github.com/open-mmlab/mmocr/pull/1547

Full Changelog: https://github.com/open-mmlab/mmocr/compare/v1.0.0rc3…v1.0.0rc4

v1.0.0rc3 (03/11/2022)¶

Highlights¶

We release several pretrained models using oCLIP-ResNet as the backbone, which is a ResNet variant trained with oCLIP and can significantly boost the performance of text detection models.
Preparing datasets is troublesome and tedious, especially in OCR domain where multiple datasets are usually required. In order to free our users from laborious work, we designed a Dataset Preparer to help you get a bunch of datasets ready for use, with only one line of command! Dataset Preparer is also crafted to consist of a series of reusable modules, each responsible for handling one of the standardized phases throughout the preparation process, shortening the development cycle on supporting new datasets.

New Features & Enhancements¶

Add Dataset Preparer by @xinke-wang in https://github.com/open-mmlab/mmocr/pull/1484

support modified resnet structure used in oCLIP by @HannibalAPE in https://github.com/open-mmlab/mmocr/pull/1458
Add oCLIP configs by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1509

Docs¶

Update install.md by @rogachevai in https://github.com/open-mmlab/mmocr/pull/1494
Refine some docs by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1455
Update some dataset preparer related docs by @xinke-wang in https://github.com/open-mmlab/mmocr/pull/1502
oclip readme by @Harold-lkk in https://github.com/open-mmlab/mmocr/pull/1505

Bug Fixes¶

Fix offline_eval error caused by new data flow by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1500

New Contributors¶

@rogachevai made their first contribution in https://github.com/open-mmlab/mmocr/pull/1494
@HannibalAPE made their first contribution in https://github.com/open-mmlab/mmocr/pull/1458

Full Changelog: https://github.com/open-mmlab/mmocr/compare/v1.0.0rc2…v1.0.0rc3

v1.0.0rc2 (14/10/2022)¶

This release relaxes the version requirement of MMEngine to >=0.1.0, < 1.0.0.

v1.0.0rc1 (9/10/2022)¶

Highlights¶

This release fixes a severe bug leading to inaccurate metric report in multi-GPU training. We release the weights for all the text recognition models in MMOCR 1.0 architecture. The inference shorthand for them are also added back to ocr.py. Besides, more documentation chapters are available now.

New Features & Enhancements¶

Simplify the Mask R-CNN config by @xinke-wang in https://github.com/open-mmlab/mmocr/pull/1391
auto scale lr by @Harold-lkk in https://github.com/open-mmlab/mmocr/pull/1326
Update paths to pretrain weights by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1416
Streamline duplicated split_result in pan_postprocessor by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1418
Update model links in ocr.py and inference.md by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1431
Update rec configs by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1417
Visualizer refine by @Harold-lkk in https://github.com/open-mmlab/mmocr/pull/1411
Support get flops and parameters in dev-1.x by @vansin in https://github.com/open-mmlab/mmocr/pull/1414

Docs¶

intersphinx and api by @Harold-lkk in https://github.com/open-mmlab/mmocr/pull/1367
Fix quickrun by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1374
Fix some docs issues by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1385
Add Documents for DataElements by @xinke-wang in https://github.com/open-mmlab/mmocr/pull/1381
config english by @Harold-lkk in https://github.com/open-mmlab/mmocr/pull/1372
Metrics by @xinke-wang in https://github.com/open-mmlab/mmocr/pull/1399
Add version switcher to menu by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1407
Data Transforms by @xinke-wang in https://github.com/open-mmlab/mmocr/pull/1392
Fix inference docs by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1415
Fix some docs by @xinke-wang in https://github.com/open-mmlab/mmocr/pull/1410
Add maintenance plan to migration guide by @xinke-wang in https://github.com/open-mmlab/mmocr/pull/1413
Update Recog Models by @xinke-wang in https://github.com/open-mmlab/mmocr/pull/1402

Bug Fixes¶

clear metric.results only done in main process by @Harold-lkk in https://github.com/open-mmlab/mmocr/pull/1379
Fix a bug in MMDetWrapper by @xinke-wang in https://github.com/open-mmlab/mmocr/pull/1393
Fix browse_dataset.py by @Mountchicken in https://github.com/open-mmlab/mmocr/pull/1398
ImgAugWrapper: Do not cilp polygons if not applicable by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1231
Fix CI by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1365
Fix merge stage test by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1370
Del CI support for torch 1.5.1 by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1371
Test windows cu111 by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1373
Fix windows CI by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1387
Upgrade pre commit hooks by @Harold-lkk in https://github.com/open-mmlab/mmocr/pull/1429
Skip invalid augmented polygons in ImgAugWrapper by @gaotongxiao in https://github.com/open-mmlab/mmocr/pull/1434

New Contributors¶

@vansin made their first contribution in https://github.com/open-mmlab/mmocr/pull/1414

Full Changelog: https://github.com/open-mmlab/mmocr/compare/v1.0.0rc0…v1.0.0rc1

v1.0.0rc0 (1/9/2022)¶

We are excited to announce the release of MMOCR 1.0.0rc0. MMOCR 1.0.0rc0 is the first version of MMOCR 1.x, a part of the OpenMMLab 2.0 projects. Built upon the new training engine, MMOCR 1.x unifies the interfaces of dataset, models, evaluation, and visualization with faster training and testing speed.

Highlights¶

New engines. MMOCR 1.x is based on MMEngine, which provides a general and powerful runner that allows more flexible customizations and significantly simplifies the entrypoints of high-level interfaces.
Unified interfaces. As a part of the OpenMMLab 2.0 projects, MMOCR 1.x unifies and refactors the interfaces and internal logics of train, testing, datasets, models, evaluation, and visualization. All the OpenMMLab 2.0 projects share the same design in those interfaces and logics to allow the emergence of multi-task/modality algorithms.
Cross project calling. Benefiting from the unified design, you can use the models implemented in other OpenMMLab projects, such as MMDet. We provide an example of how to use MMDetection’s Mask R-CNN through MMDetWrapper. Check our documents for more details. More wrappers will be released in the future.
Stronger visualization. We provide a series of useful tools which are mostly based on brand-new visualizers. As a result, it is more convenient for the users to explore the models and datasets now.
More documentation and tutorials. We add a bunch of documentation and tutorials to help users get started more smoothly. Read it here.

Breaking Changes¶

We briefly list the major breaking changes here. We will update the migration guide to provide complete details and migration instructions.

Dependencies¶

MMOCR 1.x relies on MMEngine to run. MMEngine is a new foundational library for training deep learning models in OpenMMLab 2.0 models. The dependencies of file IO and training are migrated from MMCV 1.x to MMEngine.
MMOCR 1.x relies on MMCV>=2.0.0rc0. Although MMCV no longer maintains the training functionalities since 2.0.0rc0, MMOCR 1.x relies on the data transforms, CUDA operators, and image processing interfaces in MMCV. Note that the package mmcv is the version that provide pre-built CUDA operators and mmcv-lite does not since MMCV 2.0.0rc0, while mmcv-full has been deprecated.

Training and testing¶

MMOCR 1.x uses Runner in MMEngine rather than that in MMCV. The new Runner implements and unifies the building logic of dataset, model, evaluation, and visualizer. Therefore, MMOCR 1.x no longer maintains the building logics of those modules in mmocr.train.apis and tools/train.py. Those code have been migrated into MMEngine. Please refer to the migration guide of Runner in MMEngine for more details.
The Runner in MMEngine also supports testing and validation. The testing scripts are also simplified, which has similar logic as that in training scripts to build the runner.
The execution points of hooks in the new Runner have been enriched to allow more flexible customization. Please refer to the migration guide of Hook in MMEngine for more details.
Learning rate and momentum scheduling has been migrated from Hook to Parameter Scheduler in MMEngine. Please refer to the migration guide of Parameter Scheduler in MMEngine for more details.

Configs¶

The Runner in MMEngine uses a different config structures to ease the understanding of the components in runner. Users can read the config example of MMOCR or refer to the migration guide in MMEngine for migration details.
The file names of configs and models are also refactored to follow the new rules unified across OpenMMLab 2.0 projects. Please refer to the user guides of config for more details.

Dataset¶

The Dataset classes implemented in MMOCR 1.x all inherits from the BaseDetDataset, which inherits from the BaseDataset in MMEngine. There are several changes of Dataset in MMOCR 1.x.

All the datasets support to serialize the data list to reduce the memory when multiple workers are built to accelerate data loading.
The interfaces are changed accordingly.

Data Transforms¶

The data transforms in MMOCR 1.x all inherits from those in MMCV>=2.0.0rc0, which follows a new convention in OpenMMLab 2.0 projects. The changes are listed as below:

The interfaces are also changed. Please refer to the API Reference
The functionality of some data transforms (e.g., Resize) are decomposed into several transforms.
The same data transforms in different OpenMMLab 2.0 libraries have the same augmentation implementation and the logic of the same arguments, i.e., Resize in MMDet 3.x and MMOCR 1.x will resize the image in the exact same manner given the same arguments.

Model¶

The models in MMOCR 1.x all inherits from BaseModel in MMEngine, which defines a new convention of models in OpenMMLab 2.0 projects. Users can refer to the tutorial of model in MMengine for more details. Accordingly, there are several changes as the following:

The model interfaces, including the input and output formats, are significantly simplified and unified following the new convention in MMOCR 1.x. Specifically, all the input data in training and testing are packed into inputs and data_samples, where inputs contains model inputs like a list of image tensors, and data_samples contains other information of the current data sample such as ground truths and model predictions. In this way, different tasks in MMOCR 1.x can share the same input arguments, which makes the models more general and suitable for multi-task learning.
The model has a data preprocessor module, which is used to pre-process the input data of model. In MMOCR 1.x, the data preprocessor usually does necessary steps to form the input images into a batch, such as padding. It can also serve as a place for some special data augmentations or more efficient data transformations like normalization.
The internal logic of model have been changed. In MMOCR 0.x, model used forward_train and simple_test to deal with different model forward logics. In MMOCR 1.x and OpenMMLab 2.0, the forward function has three modes: loss, predict, and tensor for training, inference, and tracing or other purposes, respectively. The forward function calls self.loss(), self.predict(), and self._forward() given the modes loss, predict, and tensor, respectively.

Evaluation¶

MMOCR 1.x mainly implements corresponding metrics for each task, which are manipulated by Evaluator to complete the evaluation. In addition, users can build evaluator in MMOCR 1.x to conduct offline evaluation, i.e., evaluate predictions that may not produced by MMOCR, prediction follows our dataset conventions. More details can be find in the Evaluation Tutorial in MMEngine.

Visualization¶

The functions of visualization in MMOCR 1.x are removed. Instead, in OpenMMLab 2.0 projects, we use Visualizer to visualize data. MMOCR 1.x implements TextDetLocalVisualizer, TextRecogLocalVisualizer, and KIELocalVisualizer to allow visualization of ground truths, model predictions, and feature maps, etc., at any place, for the three tasks supported in MMOCR. It also supports to dump the visualization data to any external visualization backends such as Tensorboard and Wandb. Check our Visualization Document for more details.

Improvements¶

Most models enjoy a performance improvement from the new framework and refactor of data transforms. For example, in MMOCR 1.x, DBNet-R50 achieves 0.854 hmean score on ICDAR 2015, while the counterpart can only get 0.840 hmean score in MMOCR 0.x.
Support mixed precision training of most of the models. However, the rest models are not supported yet because the operators they used might not be representable in fp16. We will update the documentation and list the results of mixed precision training.

Ongoing changes¶

Test-time augmentation: which was supported in MMOCR 0.x, is not implemented yet in this version due to limited time slot. We will support it in the following releases with a new and simplified design.
Inference interfaces: a unified inference interfaces will be supported in the future to ease the use of released models.
Interfaces of useful tools that can be used in notebook: more useful tools that implemented in the tools/ directory will have their python interfaces so that they can be used through notebook and in downstream libraries.
Documentation: we will add more design docs, tutorials, and migration guidance so that the community can deep dive into our new design, participate the future development, and smoothly migrate downstream libraries to MMOCR 1.x.