feat: add new schema for lidarseg

[ktro2828]

What

This pull request adds support for lidar point cloud segmentation data to the schema system. The main changes introduce the new LidarSeg schema, update the schema registry and builder logic, and add corresponding tests and fixtures to ensure proper integration and functionality.

Schema System Enhancements:

• Added a new SchemaName.LIDARSEG enum value and marked it as optional in the schema definition and helper method is_optional. (t4_devkit/schema/name.py) [1] [2] [3]
• Implemented the LidarSeg dataclass schema for representing lidar point cloud segmentation data, and registered it in the schema registry. (t4_devkit/schema/tables/lidarseg.py)
• Updated schema imports to include lidarseg. (t4_devkit/schema/tables/__init__.py)

Integration with Main Data Structures:

• Integrated LidarSeg into the main annotation loading logic by updating the data container and loader to support lidarseg records. (t4_devkit/tier4.py) [1] [2]

Testing and Fixtures:

• Added test fixtures and helper functions for dummy lidarseg records, including JSON serialization and file handling. (tests/schema/conftest.py)
• Added unit tests for the LidarSeg schema, including loading from JSON and dict, serialization, and token generation. (tests/schema/tables/test_lidarseg_table.py)
• Added a test for building a LidarSeg schema using the schema builder. (tests/schema/test_schema_builder.py)
• Updated schema name tests to include the new lidarseg type and its optional status. (tests/schema/test_schema_name.py)

[github-actions]

☂️ Python Coverage

current status: ✅

Overall Coverage

Lines	Covered	Coverage	Threshold	Status
2737	2103	77%	50%	🟢

New Files

File	Coverage	Status
t4_devkit/schema/tables/lidarseg.py	100%	🟢
TOTAL	100%	🟢

Modified Files

File	Coverage	Status
t4_devkit/schema/name.py	100%	🟢
t4_devkit/schema/tables/init.py	100%	🟢
t4_devkit/tier4.py	81%	🟢
TOTAL	94%	🟢

updated for commit: ceb9f8f by action🐍

[Copilot]

Pull Request Overview

This pull request adds support for LiDAR point cloud segmentation data to the schema system by introducing the new LidarSeg schema. The changes enable handling of lidar segmentation annotations as an optional component of the dataset structure.

• Adds LidarSeg schema class with token, filename, and sample_data_token fields
• Registers the new schema as optional in the system with proper enum and helper method updates
• Integrates LidarSeg into the main data loading pipeline through the Tier4 class

Reviewed Changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
t4_devkit/schema/name.py	Adds LIDARSEG enum value and marks it as optional
t4_devkit/schema/tables/lidarseg.py	Implements the LidarSeg dataclass schema
t4_devkit/schema/tables/init.py	Adds lidarseg import to module exports
t4_devkit/tier4.py	Integrates LidarSeg into main data container
tests/schema/conftest.py	Adds test fixtures for lidarseg testing
tests/schema/tables/test_lidarseg_table.py	Implements unit tests for LidarSeg schema
tests/schema/test_schema_builder.py	Adds test for LidarSeg schema building
tests/schema/test_schema_name.py	Updates schema name tests to include lidarseg
docs/schema/table.md	Documents the new LidarSeg table structure

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[ktro2828]

TODO

• Check running t4-devkit with T4 dataset including lidarseg annotation
  • https://console.data-search.tier4.jp/projects/rAwaNfK1/t4datasets/59f34d2e-17e2-4741-8e90-9ae6fc747b13?version=0&tab=info