182 lines
9.0 KiB
Python
182 lines
9.0 KiB
Python
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# -----------------------------------------------------------------------#
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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
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# 整合到了一个py文件中，通过指定mode进行模式的修改。
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# -----------------------------------------------------------------------#
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import time
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import cv2
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import numpy as np
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from PIL import Image
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from yolo import YOLO
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if __name__ == "__main__":
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yolo = YOLO()
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# ----------------------------------------------------------------------------------------------------------#
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# mode用于指定测试的模式：
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# '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
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# '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。
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# '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。
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# '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。
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# 'heatmap' 表示进行预测结果的热力图可视化，详情查看下方注释。
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# 'export_onnx' 表示将模型导出为onnx，需要pytorch1.7.1以上。
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# ----------------------------------------------------------------------------------------------------------#
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mode = "predict"
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# -------------------------------------------------------------------------#
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# crop 指定了是否在单张图片预测后对目标进行截取
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# count 指定了是否进行目标的计数
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# crop、count仅在mode='predict'时有效
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# -------------------------------------------------------------------------#
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crop = False
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count = False
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# ----------------------------------------------------------------------------------------------------------#
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# video_path 用于指定视频的路径，当video_path=0时表示检测摄像头
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# 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。
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# video_save_path 表示视频保存的路径，当video_save_path=""时表示不保存
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# 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。
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# video_fps 用于保存的视频的fps
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#
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# video_path、video_save_path和video_fps仅在mode='video'时有效
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# 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。
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# ----------------------------------------------------------------------------------------------------------#
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video_path = 0
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video_save_path = ""
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video_fps = 25.0
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# ----------------------------------------------------------------------------------------------------------#
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# 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。
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# fps_image_path 用于指定测试的fps图片
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#
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# test_interval和fps_image_path仅在mode='fps'有效
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# ----------------------------------------------------------------------------------------------------------#
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test_interval = 100
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fps_image_path = "img/street.jpg"
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# -------------------------------------------------------------------------#
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# dir_origin_path 指定了用于检测的图片的文件夹路径
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# dir_save_path 指定了检测完图片的保存路径
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#
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# dir_origin_path和dir_save_path仅在mode='dir_predict'时有效
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# -------------------------------------------------------------------------#
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dir_origin_path = "img/"
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dir_save_path = "img_out/"
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# -------------------------------------------------------------------------#
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# heatmap_save_path 热力图的保存路径，默认保存在model_data下
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#
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# heatmap_save_path仅在mode='heatmap'有效
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# -------------------------------------------------------------------------#
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heatmap_save_path = "model_data/heatmap_vision.png"
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# -------------------------------------------------------------------------#
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# simplify 使用Simplify onnx
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# onnx_save_path 指定了onnx的保存路径
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# -------------------------------------------------------------------------#
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simplify = True
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onnx_save_path = "model_data/models.onnx"
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if mode == "predict":
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'''
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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。
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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。
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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
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在原图上利用矩阵的方式进行截取。
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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，
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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。
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'''
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while True:
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img = input('Input image filename:')
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# img/street.jpg
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# img/street_a3.jpg
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try:
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image = Image.open(img)
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except:
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print('Open Error! Try again!')
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continue
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else:
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r_image = yolo.detect_image(image, crop=crop, count=count)
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# r_image.show()
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r_image.save("duffision.png")
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elif mode == "video":
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capture = cv2.VideoCapture(video_path)
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if video_save_path != "":
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fourcc = cv2.VideoWriter_fourcc(*'XVID')
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size = (int(capture.get(cv2.CAP_PROP_FRAME_WIDTH)), int(capture.get(cv2.CAP_PROP_FRAME_HEIGHT)))
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out = cv2.VideoWriter(video_save_path, fourcc, video_fps, size)
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ref, frame = capture.read()
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if not ref:
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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）。")
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fps = 0.0
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while (True):
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t1 = time.time()
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# 读取某一帧
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ref, frame = capture.read()
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if not ref:
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break
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# 格式转变，BGRtoRGB
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frame = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
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# 转变成Image
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frame = Image.fromarray(np.uint8(frame))
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# 进行检测
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frame = np.array(yolo.detect_image(frame))
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# RGBtoBGR满足opencv显示格式
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frame = cv2.cvtColor(frame, cv2.COLOR_RGB2BGR)
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fps = (fps + (1. / (time.time() - t1))) / 2
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print("fps= %.2f" % (fps))
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frame = cv2.putText(frame, "fps= %.2f" % (fps), (0, 40), cv2.FONT_HERSHEY_SIMPLEX, 1, (0, 255, 0), 2)
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cv2.imshow("video", frame)
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c = cv2.waitKey(1) & 0xff
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if video_save_path != "":
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out.write(frame)
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if c == 27:
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capture.release()
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break
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print("Video Detection Done!")
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capture.release()
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if video_save_path != "":
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print("Save processed video to the path :" + video_save_path)
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out.release()
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cv2.destroyAllWindows()
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elif mode == "fps":
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img = Image.open(fps_image_path)
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tact_time = yolo.get_FPS(img, test_interval)
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print(str(tact_time) + ' seconds, ' + str(1 / tact_time) + 'FPS, @batch_size 1')
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elif mode == "dir_predict":
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import os
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from tqdm import tqdm
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img_names = os.listdir(dir_origin_path)
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for img_name in tqdm(img_names):
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if img_name.lower().endswith(
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('.bmp', '.dib', '.png', '.jpg', '.jpeg', '.pbm', '.pgm', '.ppm', '.tif', '.tiff')):
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image_path = os.path.join(dir_origin_path, img_name)
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image = Image.open(image_path)
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r_image = yolo.detect_image(image)
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if not os.path.exists(dir_save_path):
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os.makedirs(dir_save_path)
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r_image.save(os.path.join(dir_save_path, img_name.replace(".jpg", ".png")), quality=95, subsampling=0)
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elif mode == "heatmap":
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while True:
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img = input('Input image filename:')
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try:
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image = Image.open(img)
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except:
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print('Open Error! Try again!')
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continue
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else:
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yolo.detect_heatmap(image, heatmap_save_path)
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elif mode == "export_onnx":
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yolo.convert_to_onnx(simplify, onnx_save_path)
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else:
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raise AssertionError(
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"Please specify the correct mode: 'predict', 'video', 'fps', 'heatmap', 'export_onnx', 'dir_predict'.")
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