add OCRBench v2

OCRBench_v2/eval_scripts/IoUscore_metric.py

@@ -0,0 +1,91 @@
+import os
+import re
+import ast
+import ipdb
+from vqa_metric import vqa_evaluation
+
+
+def calculate_iou(box1, box2):
+
+    try:
+        box1 = [int(coordinate) for coordinate in box1]
+        box2 = [int(coordinate) for coordinate in box2]
+    except:
+        return 0
+
+    x1_inter = max(box1[0], box2[0])
+    y1_inter = max(box1[1], box2[1])
+    x2_inter = min(box1[2], box2[2])
+    y2_inter = min(box1[3], box2[3])
+  
+    inter_area = max(0, x2_inter - x1_inter) * max(0, y2_inter - y1_inter)
+    
+    box1_area = (box1[2] - box1[0]) * (box1[3] - box1[1])
+    box2_area = (box2[2] - box2[0]) * (box2[3] - box2[1])
+    
+    union_area = box1_area + box2_area - inter_area
+    
+    iou = inter_area / union_area if union_area != 0 else 0
+    
+    return iou
+
+
+def vqa_with_position_evaluation(predict, img_metas):
+
+    score_content, score_bbox = .0, .0
+    if "answer" in predict.keys():
+        score_content = vqa_evaluation(predict["answer"], img_metas["answers"])
+    if "bbox" in predict.keys():
+        gt_bbox = img_metas["bbox"]
+        try:
+            predict_bbox_list = ast.literal_eval(predict["bbox"])
+            score_bbox = calculate_iou(predict_bbox_list, gt_bbox)
+        except:
+            score_bbox = 0
+    return 0.5 * score_content + 0.5 * score_bbox
+
+
+def extract_coordinates(text):
+    # Regex pattern to match coordinates in either (x1, y1, x2, y2) or [x1, y1, x2, y2] format
+
+    pattern = r'[\(\[]\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*[\)\]]'
+
+    matches = list(re.finditer(pattern, text))
+    coords_list = []
+    coords_set = set()
+    for match in matches:
+
+        x1, y1, x2, y2 = map(int, match.groups())
+
+        if all(0 <= n <= 1000 for n in [x1, y1, x2, y2]):
+            coords = (x1, y1, x2, y2)
+
+            if coords in coords_set:
+                coords_list = [c for c in coords_list if c != coords]
+
+            coords_list.append(coords)
+            coords_set.add(coords)
+    if coords_list:
+        last_coords = coords_list[-1]
+        return list(last_coords)
+    else:
+        return None
+
+
+if __name__ == "__main__":
+
+    print("Example for Text Grounding task.")
+    box1 = [50, 50, 150, 150] 
+    box2 = [60, 60, 140, 140] 
+    iou_score = calculate_iou(box1, box2)
+    print(f"IoU score: {iou_score}")
+
+    print("Example for VQA with position task.")
+    pred = {"content": "The content is Hello Buddies", "bbox": box1}
+    gt = {"content": "Hello Buddies", "bbox": box2}
+
+    vqa_score = vqa_evaluation(pred["content"], gt["content"])
+    iou_score = calculate_iou(pred["bbox"], gt["bbox"])
+
+    print(f"VQA score: {vqa_score}")
+    print(f"IoU score: {iou_score}")