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from mmaction.datasets.transforms import (DecordInit, SampleFrames, Resize,
FormatShape, DecordDecode)
from model.audio import SpeechRecognizer
from model.vision import DenseCaptioner, ImageCaptioner
class Captioner:
""" Captioner class for video captioning
"""
def __init__(self, config):
""" Initialize the captioner
Args:
config: configuration file
"""
self.config = config
self.image_captioner = ImageCaptioner(device=config['device'])
self.dense_captioner = DenseCaptioner(device=config['device'])
self.speech_recognizer = SpeechRecognizer(device=config['device'])
# if self.config['vid2seq']['enable']:
# self.vid2seq_captioner = Vid2SeqCaptioner(config=config['vid2seq'])
self.src_dir = ''
def debug_vid2seq(self, video_path, num_frames=8):
return self.vid2seq_captioner(video_path=video_path)
def caption_video(self, video_path, num_frames=8):
print("Watching video ...")
video_info = {'filename': video_path, 'start_index': 0}
video_processors = [
DecordInit(),
SampleFrames(clip_len=1, frame_interval=1, num_clips=num_frames),
DecordDecode(),
Resize(scale=(-1, 720)),
FormatShape(input_format='NCHW'),
]
for processor in video_processors:
video_info = processor.transform(video_info)
timestamp_list = [
round(i / video_info['avg_fps'], 1)
for i in video_info['frame_inds']
]
image_captions = self.image_captioner(imgs=video_info['imgs'])
dense_captions = self.dense_captioner(imgs=video_info['imgs'])
# if self.config['vid2seq']['enable']:
# vid2seq_captions = self.vid2seq_captioner(video_path=video_path)
# else:
vid2seq_captions = []
try:
speech = self.speech_recognizer(video_path)
except RuntimeError:
speech = ""
overall_captions = ""
for i in range(num_frames):
overall_captions += "[" + str(timestamp_list[i]) + "s]: "
overall_captions += "You see " + image_captions[i]
overall_captions += "You find " + dense_captions[i] + "\n"
if speech != "":
overall_captions += "You hear \"" + speech + "\"\n"
for i in range(len(vid2seq_captions)):
overall_captions += "You notice " + vid2seq_captions[i] + "\n"
print("Captions generated")
return overall_captions
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