[Bug]: ValidationError in DetectionSchema due to required center field

[Deepthit-23]

Affected Component

Schemas / Libs (libs/)

Bug Description

When DetectionSchema is instantiated without passing the center field, a Pydantic ValidationError is raised because center is marked as a required field (...). Since bbox already contains a computed property for center, the center field should be optional and automatically calculated from bbox if not provided.

This bug currently causes multiple test failures across test_tracker.py, test_detector.py, and test_pipeline.py.

Steps to Reproduce

1. Run the detector unit tests:

python -m pytest tests/test_detector.py -v


### Expected Behavior

DetectionSchema should successfully initialize by automatically computing the center coordinates from the bbox bounds if not explicitly provided.

### Actual Behavior

Running unit tests or running the pipeline fails with a `ValidationError` because `center` is a required field of `DetectionSchema` but is not passed:
pydantic_core._pydantic_core.ValidationError: 1 validation error for DetectionSchema
center
Field required [type=missing, input_value={'label': 'person', 'bbox...0.0), 'confidence': 0.9}, input_type=dict]

### Python Version

3.11

### Operating System

Windows 11

### Inference Device

None

### Error Log / Traceback

```shell

Screenshots or Recordings

No response

Additional Context

No response

Checklist

• I have searched existing issues and this is not a duplicate.
• I have tested with the latest version of the main branch.

[Deepthit-23]

@Devnil434 Please assign this issue to me, I'll work on it