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predict0.py
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predict0.py
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# -----------------------------------------------------------------------#
# predict.py将单张图片预测、摄像头检测、FPS测试和目录遍历检测等功能
# 整合到了一个py文件中,通过指定mode进行模式的修改。
# -----------------------------------------------------------------------#
import time
import cv2
import numpy as np
import tensorflow as tf
from PIL import Image
from access_dict_by_dot import AccessDictByDot
from model_yolo3_tf2.yolo_pred import YOLO
gpus = tf.config.experimental.list_physical_devices(device_type='GPU')
for gpu in gpus:
tf.config.experimental.set_memory_growth(gpu, True)
def _main(args):
yolo = YOLO(args)
# ----------------------------------------------------------------------------------------------------------#
# mode用于指定测试的模式:
# 'predict'表示单张图片预测,如果想对预测过程进行修改,如保存图片,截取对象等,可以先看下方详细的注释
# 'video'表示视频检测,可调用摄像头或者视频进行检测,详情查看下方注释。
# 'fps'表示测试fps,使用的图片是img里面的street.jpg,详情查看下方注释。
# 'dir_predict'表示遍历文件夹进行检测并保存。默认遍历img文件夹,保存img_out文件夹,详情查看下方注释。
# ----------------------------------------------------------------------------------------------------------#
mode = "predict"
# ----------------------------------------------------------------------------------------------------------#
# video_path用于指定视频的路径,当video_path=0时表示检测摄像头
# 想要检测视频,则设置如video_path = "xxx.mp4"即可,代表读取出根目录下的xxx.mp4文件。
# video_save_path表示视频保存的路径,当video_save_path=""时表示不保存
# 想要保存视频,则设置如video_save_path = "yyy.mp4"即可,代表保存为根目录下的yyy.mp4文件。
# video_fps用于保存的视频的fps
# video_path、video_save_path和video_fps仅在mode='video'时有效
# 保存视频时需要ctrl+c退出或者运行到最后一帧才会完成完整的保存步骤。
# ----------------------------------------------------------------------------------------------------------#
video_path = 0
video_save_path = ""
video_fps = 25.0
# -------------------------------------------------------------------------#
# test_interval用于指定测量fps的时候,图片检测的次数
# 理论上test_interval越大,fps越准确。
# -------------------------------------------------------------------------#
test_interval = 100
# -------------------------------------------------------------------------#
# dir_origin_path指定了用于检测的图片的文件夹路径
# dir_save_path指定了检测完图片的保存路径
# dir_origin_path和dir_save_path仅在mode='dir_predict'时有效
# -------------------------------------------------------------------------#
dir_origin_path = "img/"
dir_save_path = "img_out/"
if mode == "predict":
'''
1、如果想要进行检测完的图片的保存,利用r_image.save("img.jpg")即可保存,直接在predict.py里进行修改即可。
2、如果想要获得预测框的坐标,可以进入yolo.detect_image函数,在绘图部分读取top,left,bottom,right这四个值。
3、如果想要利用预测框截取下目标,可以进入yolo.detect_image函数,在绘图部分利用获取到的top,left,bottom,right这四个值
在原图上利用矩阵的方式进行截取。
4、如果想要在预测图上写额外的字,比如检测到的特定目标的数量,可以进入yolo.detect_image函数,在绘图部分对predicted_class进行判断,
比如判断if predicted_class == 'car': 即可判断当前目标是否为车,然后记录数量即可。利用draw.text即可写字。
'''
import os
image = Image.open(os.path.join(os.path.dirname(__file__), args.image_path))
image_out = yolo.detect_image(image)
image_out.show()
elif mode == "video":
capture = cv2.VideoCapture(video_path)
if video_save_path != "":
fourcc = cv2.VideoWriter_fourcc(*'XVID')
size = (int(capture.get(cv2.CAP_PROP_FRAME_WIDTH)), int(capture.get(cv2.CAP_PROP_FRAME_HEIGHT)))
out = cv2.VideoWriter(video_save_path, fourcc, video_fps, size)
ref, frame = capture.read()
if not ref:
raise ValueError("未能正确读取摄像头(视频),请注意是否正确安装摄像头(是否正确填写视频路径)。")
fps = 0.0
while (True):
t1 = time.time()
# 读取某一帧
ref, frame = capture.read()
if not ref:
break
# 格式转变,BGRtoRGB
frame = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
# 转变成Image
frame = Image.fromarray(np.uint8(frame))
# 进行检测
frame = np.array(yolo.detect_image(frame))
# RGBtoBGR满足opencv显示格式
frame = cv2.cvtColor(frame, cv2.COLOR_RGB2BGR)
fps = (fps + (1. / (time.time() - t1))) / 2
print("fps= %.2f" % (fps))
frame = cv2.putText(frame, "fps= %.2f" % (fps), (0, 40), cv2.FONT_HERSHEY_SIMPLEX, 1, (0, 255, 0), 2)
cv2.imshow("video", frame)
c = cv2.waitKey(1) & 0xff
if video_save_path != "":
out.write(frame)
if c == 27:
capture.release()
break
print("Video Detection Done!")
capture.release()
if video_save_path != "":
print("Save processed video to the path :" + video_save_path)
out.release()
cv2.destroyAllWindows()
elif mode == "fps":
img = Image.open('img/street.jpg')
tact_time = yolo.get_FPS(img, test_interval)
print(str(tact_time) + ' seconds, ' + str(1 / tact_time) + 'FPS, @batch_size 1')
elif mode == "dir_predict":
import os
from tqdm import tqdm
img_names = os.listdir(dir_origin_path)
for img_name in tqdm(img_names):
if img_name.lower().endswith(
('.bmp', '.dib', '.png', '.jpg', '.jpeg', '.pbm', '.pgm', '.ppm', '.tif', '.tiff')):
image_path = os.path.join(dir_origin_path, img_name)
image = Image.open(image_path)
r_image = yolo.detect_image(image)
if not os.path.exists(dir_save_path):
os.makedirs(dir_save_path)
r_image.save(os.path.join(dir_save_path, img_name))
else:
raise AssertionError("Please specify the correct mode: 'predict', 'video', 'fps' or 'dir_predict'.")
if __name__ == '__main__':
dictionary = {
'weight_path': "model_data/trained_weight_0.h5",
'classes_path': "data/ps_classes.txt",
'image_path': "data/demo/train/20160725-3-1.jpg"
}
args = AccessDictByDot.load(dictionary)
_main(args)