included low pass filter in package and add to plot_data example

src/orisys/__init__.py

@@ -5,13 +5,14 @@ A Python library for processing and analyzing optical tactile sensor data,
 including image stitching, optical flow tracking, and deformation decomposition.
 """
 
-__version__ = "0.4.2"
+__version__ = "0.4.3"
 __author__ = "Orisys"
 
 from .sensor import Sensor
 from . import util
 from . import configs
 from . import finger
+from . import signal_processing
 from .frame_processors import FFCFrameProcessor
 
 CompoundEyeSensor = Sensor
@@ -33,9 +34,12 @@ __all__ = [
     # finger runtime helpers
     'finger',
 
+    # signal helpers
+    'signal_processing',
+
     # configs utilities functions
     'list_config', 
-    'export_config'
+    'export_config',
 
     # test
     'FFCFrameProcessor'