frontend/__init__.py: general improvements

frontend/__init__.py

@@ -32,20 +32,23 @@ def normalize_and_colormap(img):
 
 
 def change_epoch():
-    global r
     epoch = input('Enter epoch number or "latest"\n')
     r = requests.post(f'{API_URL}/model/update/{epoch}')
     print(r.text)
 
 
-def extract_data(r):
+def extract_data(data):
     # FIXME yuck, don't json the json
-    data = json.loads(json.loads(r.text))
+    duration = data['duration']
-    pred_disp = np.asarray(data['disp'], dtype='uint8')
+
+    # get result and rotate 90 deg
+    pred_disp = cv2.transpose(np.asarray(data['disp'], dtype='uint8'))
+
+    if input not in data:
+        return pred_disp, duration
+
     in_img = np.asarray(data['input'], dtype='uint8').transpose((2, 0, 1))
     ref_pat = np.asarray(data['reference'], dtype='uint8').transpose((2, 0, 1))
-    duration = data['duration']
-    pred_disp = cv2.transpose(pred_disp)
     return pred_disp, in_img, ref_pat, duration
 
 
@@ -65,9 +68,11 @@ def put_image(img_path):
     r = requests.put(f'{API_URL}/ir', files=openBin)
     print('received response')
     r.raise_for_status()
-    return r
+    data = json.loads(json.loads(r.text))
+    return data
 
 
+if __name__ == '__main__':
     while True:
         for img in os.scandir(img_dir):
             start = datetime.now()
@@ -77,8 +82,8 @@ while True:
             # alternatively: use img.path for native size
             downsize_input_img()
 
-        r = put_image('buffer.png')
+            data = put_image('buffer.png')
-        pred_disp, in_img, ref_pat, duration = extract_data(r)
+            pred_disp, in_img, ref_pat, duration = extract_data(data)
 
             print(f'inference took {duration:1.4f}s')
             print(f'pipeline and transfer took another {(datetime.now() - start).total_seconds() - float(duration):1.4f}s')