102 lines
3.2 KiB
Python
102 lines
3.2 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 VideoPeopleDetection():
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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, model=None):
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self.model = model
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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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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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def class_to_label(self, x):
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return self.classes[int(x)]
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# def transpic(self, img):
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# return cv2.cvtColor(img, cv2.COLOR_BGR2RGB)
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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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results = self.model(img, size=640)
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# Loop through each detected object and count the people
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accuracy = 0
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num_people = 0
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bgr = (0, 255, 0)
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for obj in results.xyxy[0]:
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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 > 0.5):
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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), self.classes[obj[-1].item()]}", (xmin, ymin),
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# cv2.FONT_HERSHEY_SIMPLEX, 0.9, (0, 0, 255), 2)
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if obj[-1] == 0: # 0 is the class ID for 'person'
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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 > 0.5):
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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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resText=f'检测到{num_people}人'
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# print(num_people)
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return jpeg.tobytes(), resText
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def time_synchronized():
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# pytorch-accurate time
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if torch.cuda.is_available():
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torch.cuda.synchronize()
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return time.time()
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