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import re |
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import ast |
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import cv2 |
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example_output = "In frame 06, a adult in grey clothes is on the right of the baby at position [0.397, 0.006, 0.716, 0.998]. The adult continues to be on the right of the baby until frame 99, where the adult is positioned at [0.397, 0.006, 0.716, 0.998]." |
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def search_a_file_in_directory(directory, file_name): |
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import os |
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for root, dirs, files in os.walk(directory): |
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if file_name in files: |
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return os.path.join(root, file_name) |
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return None |
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def extract_frame_and_position(output: str): |
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match = re.search(r'frame (\d+)', output) |
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if match: |
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frame0 = int(match.group(1)) |
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output = re.sub(r'frame (\d+)', '', output, count=1) |
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match = re.search(r'position (\[.*?\])', output) |
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if match: |
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position0 = ast.literal_eval(match.group(1)) |
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output = re.sub(r'position (\[.*?\])', '', output, count=1) |
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return [[frame0, position0],[1, 2]] |
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def main(N = 100): |
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vidor_path_base = 'vidor/train/video' |
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video_path = search_a_file_in_directory(vidor_path_base, '5541679096.mp4') |
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results = extract_frame_and_position(example_output) |
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frame0 = results[0][0] |
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bbox0 = results[0][1] |
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frame1 = results[1][0] |
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bbox1 = results[1][1] |
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cap = cv2.VideoCapture(video_path) |
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total_frames = int(cap.get(cv2.CAP_PROP_FRAME_COUNT)) |
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real_frame0 = int(frame0 * total_frames / N) |
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real_frame1 = int(frame1 * total_frames / N) |
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cap.set(cv2.CAP_PROP_POS_FRAMES, real_frame0) |
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ret, frame = cap.read() |
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if ret: |
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height, width = frame.shape[:2] |
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xmin = int(bbox0[0] * width) |
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ymin = int(bbox0[1] * height) |
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xmax = int(bbox0[2] * width) |
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ymax = int(bbox0[3] * height) |
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cv2.rectangle(frame, (xmin, ymin), (xmax, ymax), (0, 255, 0), 2) |
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cv2.imshow('Frame', frame) |
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cv2.waitKey(0) |
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cv2.destroyAllWindows() |
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cap.release() |
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if __name__ == "__main__": |
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main() |
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