wehub-resource-sync
108 lines
3.3 KiB
Python
108 lines
3.3 KiB
Python
import cv2
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import numpy as np
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import supervision as sv
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import torch
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import torchvision
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from groundingdino.util.inference import Model
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from segment_anything import SamPredictor
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from RepViTSAM.setup_repvit_sam import build_sam_repvit
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DEVICE = torch.device('cuda' if torch.cuda.is_available() else 'cpu')
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# GroundingDINO config and checkpoint
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GROUNDING_DINO_CONFIG_PATH = "GroundingDINO/groundingdino/config/GroundingDINO_SwinT_OGC.py"
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GROUNDING_DINO_CHECKPOINT_PATH = "./groundingdino_swint_ogc.pth"
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# Building GroundingDINO inference model
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grounding_dino_model = Model(model_config_path=GROUNDING_DINO_CONFIG_PATH, model_checkpoint_path=GROUNDING_DINO_CHECKPOINT_PATH)
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# Building MobileSAM predictor
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RepViTSAM_CHECKPOINT_PATH = "./EfficientSAM/repvit_sam.pt"
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repvit_sam = build_sam_repvit(checkpoint=RepViTSAM_CHECKPOINT_PATH)
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repvit_sam.to(device=DEVICE)
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sam_predictor = SamPredictor(repvit_sam)
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# Predict classes and hyper-param for GroundingDINO
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SOURCE_IMAGE_PATH = "./EfficientSAM/LightHQSAM/example_light_hqsam.png"
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CLASSES = ["bench"]
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BOX_THRESHOLD = 0.25
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TEXT_THRESHOLD = 0.25
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NMS_THRESHOLD = 0.8
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# load image
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image = cv2.imread(SOURCE_IMAGE_PATH)
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# detect objects
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detections = grounding_dino_model.predict_with_classes(
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image=image,
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classes=CLASSES,
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box_threshold=BOX_THRESHOLD,
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text_threshold=TEXT_THRESHOLD
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)
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# annotate image with detections
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box_annotator = sv.BoxAnnotator()
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labels = [
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f"{CLASSES[class_id]} {confidence:0.2f}"
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for _, _, confidence, class_id, _, _
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in detections]
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annotated_frame = box_annotator.annotate(scene=image.copy(), detections=detections, labels=labels)
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# save the annotated grounding dino image
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cv2.imwrite("EfficientSAM/LightHQSAM/groundingdino_annotated_image.jpg", annotated_frame)
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# NMS post process
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print(f"Before NMS: {len(detections.xyxy)} boxes")
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nms_idx = torchvision.ops.nms(
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torch.from_numpy(detections.xyxy),
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torch.from_numpy(detections.confidence),
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NMS_THRESHOLD
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).numpy().tolist()
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detections.xyxy = detections.xyxy[nms_idx]
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detections.confidence = detections.confidence[nms_idx]
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detections.class_id = detections.class_id[nms_idx]
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print(f"After NMS: {len(detections.xyxy)} boxes")
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# Prompting SAM with detected boxes
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def segment(sam_predictor: SamPredictor, image: np.ndarray, xyxy: np.ndarray) -> np.ndarray:
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sam_predictor.set_image(image)
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result_masks = []
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for box in xyxy:
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masks, scores, logits = sam_predictor.predict(
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box=box,
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multimask_output=False,
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hq_token_only=True,
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)
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index = np.argmax(scores)
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result_masks.append(masks[index])
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return np.array(result_masks)
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# convert detections to masks
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detections.mask = segment(
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sam_predictor=sam_predictor,
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image=cv2.cvtColor(image, cv2.COLOR_BGR2RGB),
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xyxy=detections.xyxy
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)
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# annotate image with detections
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box_annotator = sv.BoxAnnotator()
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mask_annotator = sv.MaskAnnotator()
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labels = [
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f"{CLASSES[class_id]} {confidence:0.2f}"
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for _, _, confidence, class_id, _, _
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in detections]
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annotated_image = mask_annotator.annotate(scene=image.copy(), detections=detections)
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annotated_image = box_annotator.annotate(scene=annotated_image, detections=detections, labels=labels)
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# save the annotated grounded-sam image
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cv2.imwrite("EfficientSAM/grounded_repvit_sam_annotated_image.jpg", annotated_image)
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