Fixed Mask-RCNN model logging and NUM_CLASSES (#201)

Author: luxedo

backend/webserver/util/mask_rcnn.py

@@ -5,6 +5,8 @@
 from keras.preprocessing.image import img_to_array
 from mrcnn.config import Config
 import mrcnn.model as modellib
+import logging
+logger = logging.getLogger('gunicorn.error')
 
 
 MODEL_DIR = "/workspace/models"
@@ -18,14 +20,14 @@ class CocoConfig(Config):
     NAME = "coco"
     GPU_COUNT = 1
     IMAGES_PER_GPU = 1
-    NUM_CLASSES = 1 + 80
+    NUM_CLASSES = len(CLASS_NAMES)
 
 
 class MaskRCNN():
 
     def __init__(self):
-        
-        self.config = CocoConfig() 
+
+        self.config = CocoConfig()
         self.model = modellib.MaskRCNN(
             mode="inference",
             model_dir=MODEL_DIR,
@@ -34,26 +36,27 @@ def __init__(self):
         try:
             self.model.load_weights(COCO_MODEL_PATH, by_name=True)
             self.model.keras_model._make_predict_function()
+            logger.info(f"Loaded MaskRCNN model: {COCO_MODEL_PATH}")
         except:
             logger.error(f"Could not load MaskRCNN model (place 'mask_rcnn_coco.h5' in the models directory)")
             self.model = None
-                
+
 
     def detect(self, image):
 
         if self.model is None:
             return {}
-        
+
         image = image.convert('RGB')
         width, height = image.size
         image.thumbnail((1024, 1024))
 
         image = img_to_array(image)
         result = self.model.detect([image])[0]
-        
+
         masks = result.get('masks')
         class_ids = result.get('class_ids')
-        
+
         coco_image = im.Image(width=width, height=height)
 
         for i in range(masks.shape[-1]):
@@ -68,4 +71,3 @@ def detect(self, image):
 
 
 model = MaskRCNN()
-