add back GUI 2D display with optional raw / pure color background

examples/pipeline/config.py

@@ -4,6 +4,7 @@ from __future__ import annotations
 
 from dataclasses import dataclass
 
+from orisys.finger import DEFAULT_FINGER_EXPORT_DIR
 from viz.mesh_camera import DEFAULT_FINGER_VIZ_POSE
 
 
@@ -18,6 +19,7 @@ class PipelineConfig:
     video: str = "0"
     config: str = "./config/dd02-ov.json"
     calib: str | None = None
+    export_dir: str = DEFAULT_FINGER_EXPORT_DIR
     verbose: bool = False
     mesh_map: str = "depth"
     threshold: float | None = None