Loading openflexure_microscope/api/app.py +4 −1 Original line number Diff line number Diff line Loading @@ -29,10 +29,10 @@ from labthings import create_app from labthings.extensions import find_extensions from labthings.views import View from openflexure_microscope.microscope import Microscope from openflexure_microscope.api.utilities import init_default_extensions, list_routes from openflexure_microscope.api.v2 import views from openflexure_microscope.json import JSONEncoder from openflexure_microscope.microscope import Microscope from openflexure_microscope.paths import ( OPENFLEXURE_EXTENSIONS_PATH, OPENFLEXURE_VAR_PATH, Loading Loading @@ -135,6 +135,9 @@ labthing.add_root_link(views.ConfigurationProperty, "instrumentConfiguration") # Attach stage resources labthing.add_view(views.StageTypeProperty, "/instrument/stage/type") # Attach camera resources labthing.add_view(views.LSTImageProperty, "/instrument/camera/lst") # Attach streams resources labthing.add_view(views.MjpegStream, "/streams/mjpeg") labthing.add_view(views.SnapshotStream, "/streams/snapshot") Loading openflexure_microscope/api/v2/views/__init__.py +1 −0 Original line number Diff line number Diff line from .actions import enabled_root_actions from .camera import * from .captures import * from .instrument import * from .stage import * Loading openflexure_microscope/api/v2/views/camera.py 0 → 100644 +47 −0 Original line number Diff line number Diff line import logging from io import BytesIO import numpy as np from flask import Response from labthings import find_component from labthings.views import PropertyView from PIL import Image class LSTImageProperty(PropertyView): """Gets the lens-shading table as an image""" responses = { 200: { "content_type": "image/png", "description": "Lens-shading table in RGB format", } } def get(self): """ Get the stage geometry. """ microscope = find_component("org.openflexure.microscope") # Return intentionally empty response if no LST is available if microscope.get_configuration()["camera"]["type"] != "PiCameraStreamer": logging.warning("Requested an LST from a non-PiCameraStreamer camera") return ("", 204) # Return intentionally empty response if we have a valid PiCamera but no LST elif getattr(microscope.camera.camera, "lens_shading_table") is None: logging.warning("PiCamera.lens_shading_table returned as None") return ("", 204) else: lst = np.asarray(microscope.camera.camera.lens_shading_table) # R next to G1 top = np.concatenate(lst[:2], axis=1) # G2 next to B bottom = np.concatenate(lst[2:], axis=1) # Combined into a 2x2 grid of greyscale images all_channels = np.concatenate((top, bottom), axis=0) # Create a PNG img_bytes = BytesIO() Image.fromarray(np.uint8(all_channels), "L").save(img_bytes, "PNG") # Return the image return Response(img_bytes.getvalue(), mimetype="image/png") Loading
openflexure_microscope/api/app.py +4 −1 Original line number Diff line number Diff line Loading @@ -29,10 +29,10 @@ from labthings import create_app from labthings.extensions import find_extensions from labthings.views import View from openflexure_microscope.microscope import Microscope from openflexure_microscope.api.utilities import init_default_extensions, list_routes from openflexure_microscope.api.v2 import views from openflexure_microscope.json import JSONEncoder from openflexure_microscope.microscope import Microscope from openflexure_microscope.paths import ( OPENFLEXURE_EXTENSIONS_PATH, OPENFLEXURE_VAR_PATH, Loading Loading @@ -135,6 +135,9 @@ labthing.add_root_link(views.ConfigurationProperty, "instrumentConfiguration") # Attach stage resources labthing.add_view(views.StageTypeProperty, "/instrument/stage/type") # Attach camera resources labthing.add_view(views.LSTImageProperty, "/instrument/camera/lst") # Attach streams resources labthing.add_view(views.MjpegStream, "/streams/mjpeg") labthing.add_view(views.SnapshotStream, "/streams/snapshot") Loading
openflexure_microscope/api/v2/views/__init__.py +1 −0 Original line number Diff line number Diff line from .actions import enabled_root_actions from .camera import * from .captures import * from .instrument import * from .stage import * Loading
openflexure_microscope/api/v2/views/camera.py 0 → 100644 +47 −0 Original line number Diff line number Diff line import logging from io import BytesIO import numpy as np from flask import Response from labthings import find_component from labthings.views import PropertyView from PIL import Image class LSTImageProperty(PropertyView): """Gets the lens-shading table as an image""" responses = { 200: { "content_type": "image/png", "description": "Lens-shading table in RGB format", } } def get(self): """ Get the stage geometry. """ microscope = find_component("org.openflexure.microscope") # Return intentionally empty response if no LST is available if microscope.get_configuration()["camera"]["type"] != "PiCameraStreamer": logging.warning("Requested an LST from a non-PiCameraStreamer camera") return ("", 204) # Return intentionally empty response if we have a valid PiCamera but no LST elif getattr(microscope.camera.camera, "lens_shading_table") is None: logging.warning("PiCamera.lens_shading_table returned as None") return ("", 204) else: lst = np.asarray(microscope.camera.camera.lens_shading_table) # R next to G1 top = np.concatenate(lst[:2], axis=1) # G2 next to B bottom = np.concatenate(lst[2:], axis=1) # Combined into a 2x2 grid of greyscale images all_channels = np.concatenate((top, bottom), axis=0) # Create a PNG img_bytes = BytesIO() Image.fromarray(np.uint8(all_channels), "L").save(img_bytes, "PNG") # Return the image return Response(img_bytes.getvalue(), mimetype="image/png")
