Solve combined categories (#125)

* Update inference.py

groundingdino/util/inference.py

@@ -6,6 +6,7 @@ import supervision as sv
 import torch
 from PIL import Image
 from torchvision.ops import box_convert
+import bisect
 
 import groundingdino.datasets.transforms as T
 from groundingdino.models import build_model
@@ -55,7 +56,8 @@ def predict(
         caption: str,
         box_threshold: float,
         text_threshold: float,
-        device: str = "cuda"
+        device: str = "cuda",
+        remove_combined: bool = False
 ) -> Tuple[torch.Tensor, torch.Tensor, List[str]]:
     caption = preprocess_caption(caption=caption)
 
@@ -74,12 +76,23 @@ def predict(
 
     tokenizer = model.tokenizer
     tokenized = tokenizer(caption)
-
-    phrases = [
-        get_phrases_from_posmap(logit > text_threshold, tokenized, tokenizer).replace('.', '')
-        for logit
-        in logits
-    ]
+    
+    if remove_combined:
+        sep_idx = [i for i in range(len(tokenized['input_ids'])) if tokenized['input_ids'][i] in [101, 102, 1012]]
+        
+        phrases = []
+        for logit in logits:
+            max_idx = logit.argmax()
+            insert_idx = bisect.bisect_left(sep_idx, max_idx)
+            right_idx = sep_idx[insert_idx]
+            left_idx = sep_idx[insert_idx - 1]
+            phrases.append(get_phrases_from_posmap(logit > text_threshold, tokenized, tokenizer, left_idx, right_idx).replace('.', ''))
+    else:
+        phrases = [
+            get_phrases_from_posmap(logit > text_threshold, tokenized, tokenizer).replace('.', '')
+            for logit
+            in logits
+        ]
 
     return boxes, logits.max(dim=1)[0], phrases
 

groundingdino/util/utils.py

@@ -597,10 +597,12 @@ def targets_to(targets: List[Dict[str, Any]], device):
 
 
 def get_phrases_from_posmap(
-    posmap: torch.BoolTensor, tokenized: Dict, tokenizer: AutoTokenizer
+    posmap: torch.BoolTensor, tokenized: Dict, tokenizer: AutoTokenizer, left_idx: int = 0, right_idx: int = 255
 ):
     assert isinstance(posmap, torch.Tensor), "posmap must be torch.Tensor"
     if posmap.dim() == 1:
+        posmap[0: left_idx + 1] = False
+        posmap[right_idx:] = False
         non_zero_idx = posmap.nonzero(as_tuple=True)[0].tolist()
         token_ids = [tokenized["input_ids"][i] for i in non_zero_idx]
         return tokenizer.decode(token_ids)