143 lines
5.5 KiB
Python
143 lines
5.5 KiB
Python
import os
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import json
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import logging
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import torch
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import cv2
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import requests
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import zipfile
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import shutil
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from ultralytics import YOLO
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from urllib.parse import urlparse
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def load_pipeline_node(node_config: dict, mpta_dir: str) -> dict:
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# Recursively load a model node from configuration.
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model_path = os.path.join(mpta_dir, node_config["modelFile"])
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if not os.path.exists(model_path):
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logging.error(f"Model file {model_path} not found.")
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raise FileNotFoundError(f"Model file {model_path} not found.")
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logging.info(f"Loading model for node {node_config['modelId']} from {model_path}")
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model = YOLO(model_path)
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if torch.cuda.is_available():
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model.to("cuda")
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node = {
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"modelId": node_config["modelId"],
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"modelFile": node_config["modelFile"],
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"triggerClasses": node_config.get("triggerClasses", []),
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"crop": node_config.get("crop", False),
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"minConfidence": node_config.get("minConfidence", None),
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"model": model,
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"branches": []
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}
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for child in node_config.get("branches", []):
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node["branches"].append(load_pipeline_node(child, mpta_dir))
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return node
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def load_pipeline_from_zip(zip_source: str, target_dir: str) -> dict:
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os.makedirs(target_dir, exist_ok=True)
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zip_path = os.path.join(target_dir, "pipeline.mpta")
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# Parse the source; only local files are supported here.
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parsed = urlparse(zip_source)
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if parsed.scheme in ("", "file"):
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local_path = parsed.path if parsed.scheme == "file" else zip_source
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if os.path.exists(local_path):
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try:
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shutil.copy(local_path, zip_path)
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logging.info(f"Copied local .mpta file from {local_path} to {zip_path}")
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except Exception as e:
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logging.error(f"Failed to copy local .mpta file from {local_path}: {e}")
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return None
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else:
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logging.error(f"Local file {local_path} does not exist.")
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return None
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else:
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logging.error("HTTP download functionality has been moved. Use a local file path here.")
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return None
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try:
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with zipfile.ZipFile(zip_path, "r") as zip_ref:
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zip_ref.extractall(target_dir)
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logging.info(f"Extracted .mpta file to {target_dir}")
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except Exception as e:
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logging.error(f"Failed to extract .mpta file: {e}")
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return None
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finally:
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if os.path.exists(zip_path):
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os.remove(zip_path)
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pipeline_name = os.path.basename(zip_source)
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pipeline_name = os.path.splitext(pipeline_name)[0]
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mpta_dir = os.path.join(target_dir, pipeline_name)
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pipeline_json_path = os.path.join(mpta_dir, "pipeline.json")
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if not os.path.exists(pipeline_json_path):
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logging.error("pipeline.json not found in the .mpta file")
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return None
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try:
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with open(pipeline_json_path, "r") as f:
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pipeline_config = json.load(f)
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return load_pipeline_node(pipeline_config["pipeline"], mpta_dir)
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except Exception as e:
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logging.error(f"Error loading pipeline.json: {e}")
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return None
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def run_pipeline(frame, node: dict, return_bbox: bool = False):
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"""
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Processes the frame with the given pipeline node. When return_bbox is True,
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the function returns a tuple (detection, bbox) where bbox is (x1,y1,x2,y2)
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for drawing. Otherwise, returns only the detection.
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"""
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try:
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results = node["model"].track(frame, stream=False, persist=True)
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detection = None
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best_box = None
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max_conf = -1
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for r in results:
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for box in r.boxes:
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box_cpu = box.cpu()
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conf = float(box_cpu.conf[0])
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if conf > max_conf and hasattr(box, "id") and box.id is not None:
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max_conf = conf
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detection = {
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"class": node["model"].names[int(box_cpu.cls[0])],
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"confidence": conf,
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"id": box.id.item()
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}
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best_box = box_cpu
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bbox = None
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if detection and node.get("crop", False) and best_box is not None:
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coords = best_box.xyxy[0]
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x1, y1, x2, y2 = map(int, coords)
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h, w = frame.shape[:2]
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x1, y1 = max(0, x1), max(0, y1)
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x2, y2 = min(w, x2), min(h, y2)
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if x2 > x1 and y2 > y1:
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bbox = (x1, y1, x2, y2)
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frame = frame[y1:y2, x1:x2]
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if detection is not None:
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for branch in node["branches"]:
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if detection["class"] in branch.get("triggerClasses", []):
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min_conf = branch.get("minConfidence")
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if min_conf is not None and detection["confidence"] < min_conf:
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logging.debug(f"Confidence {detection['confidence']} below threshold {min_conf} for branch {branch['modelId']}.")
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if return_bbox:
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return detection, bbox
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return detection
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res = run_pipeline(frame, branch, return_bbox)
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if res is not None:
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if return_bbox:
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return res
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return res
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if return_bbox:
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return detection, bbox
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return detection
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if return_bbox:
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return None, None
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return None
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except Exception as e:
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logging.error(f"Error running pipeline on node {node.get('modelId')}: {e}")
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if return_bbox:
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return None, None
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return None
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