fix postprocessing

app.py

@@ -24,12 +24,14 @@ def query_image(img, text_queries, score_threshold):
     with torch.no_grad():
         outputs = model(**inputs)
 
-    target_sizes = torch.Tensor([img.shape[:2]])
+
+    target_sizes = torch.Tensor([[768, 768]])
     outputs.logits = outputs.logits.cpu()
     outputs.pred_boxes = outputs.pred_boxes.cpu() 
     results = processor.post_process(outputs=outputs, target_sizes=target_sizes)
     boxes, scores, labels = results[0]["boxes"], results[0]["scores"], results[0]["labels"]
 
+    img = cv2.resize(img, (768, 768), interpolation = cv2.INTER_AREA)
     font = cv2.FONT_HERSHEY_SIMPLEX
 
     for box, score, label in zip(boxes, scores, labels):
@@ -59,7 +61,7 @@ can also use the score threshold slider to set a threshold to filter out low pro
 """
 demo = gr.Interface(
     query_image, 
-    inputs=[gr.Image(), "text", gr.Slider(0, 1, value=0.1)], 
+    inputs=[gr.Image(shape=(768, 768)), "text", gr.Slider(0, 1, value=0.1)], 
     outputs="image",
     title="Zero-Shot Object Detection with OWL-ViT",
     description=description,