93 lines
3.0 KiB
Python
93 lines
3.0 KiB
Python
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import datetime
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import os
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import time
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import ffmpeg
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import torch
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import cv2
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import numpy as np
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from multiprocessing import Process, Manager
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from threading import Thread
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from read_data import LoadImages, LoadStreams
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import torch.backends.cudnn as cudnn
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class HelmetDetection():
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time_reference = datetime.datetime.now()
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counter_frame = 0
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processed_fps = 0
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def __init__(self,video_path=None):
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self.model = torch.hub.load((os.getcwd()) + "/algorithm/yolov5", 'custom', source='local', path='./weight/helmet.pt', force_reload=True)
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self.classes = self.model.names
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self.frame = [None]
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if video_path is not None:
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self.video_name = video_path
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else:
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self.video_name = 'vid2.mp4' # A default video file
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self.dataset = LoadImages(self.video_name)
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self.flag = 0
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def use_webcam(self, source):
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# self.dataset.release() # Release any existing video capture
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#self.cap = cv2.VideoCapture(0) # Open default webcam
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# print('use_webcam')
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source = source
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self.imgsz = 640
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cudnn.benchmark = True
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self.dataset = LoadStreams(source, img_size=self.imgsz)
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self.flag = 1
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def class_to_label(self, x):
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return self.classes[int(x)]
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def get_frame(self):
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for im0s in self.dataset:
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# print(self.dataset.mode)
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# print(self.dataset)
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if self.dataset.mode == 'stream':
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img = im0s[0].copy()
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else:
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img = im0s.copy()
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img = cv2.cvtColor(img, cv2.COLOR_RGB2BGR)
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results = self.model(img, size=640)
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# print(results)
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img = cv2.cvtColor(img, cv2.COLOR_RGB2BGR)
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# Loop through each detected object and count the people
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num_people = 0
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bgr = (0, 255, 0)
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txt = ""
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objs = results.xyxy[0]
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for c in objs[:,-1].unique():
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n = (objs[:,-1] == c).sum() # detections per class
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txt += f"{n} {self.classes[int(c)]}{'s' * (n > 1)}, " # add to string
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for obj in objs:
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if obj[-1] == 1: # 1 is the class ID for '未戴头盔'
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# Draw bounding boxes around people
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xmin, ymin, xmax, ymax = map(int, obj[:4])
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accuracy = obj[4]
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if (accuracy > 0.2):
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num_people += 1
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cv2.rectangle(img, (xmin, ymin), (xmax, ymax), (0, 0, 255), 2)
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cv2.putText(img, f" {round(float(accuracy), 2)}", (xmin, ymin),
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cv2.FONT_HERSHEY_SIMPLEX, 0.9, (0, 0, 255), 2)
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# Draw the number of people on the frame and display it
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ret, jpeg = cv2.imencode(".jpg", img)
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# print(jpeg.shape)
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return jpeg.tobytes(), txt
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