Use RNN to detect key frames in a video

Question

Hossam Elshahaby 2018-9-24

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https://ww2.mathworks.cn/matlabcentral/answers/420472-use-rnn-to-detect-key-frames-in-a-video

评论： Walter Roberson 2018-9-24

Hello Mr/Ms,

I want to use RNN network to get sequence of frames and output another sequence of key frames.

How can I achieve that purpose?

Thanks,

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Hossam Elshahaby 2018-9-24

Hi Walter, My application is OCR for text in videos which is rotating horizontally or flipping vertically . I want to detect the frames with totally new text .

What are the optimum algorithm that I can use?

Walter Roberson 2018-9-24

That is an algorithm question, not a MATLAB question. It is also a different algorithm question than was originally asked as key frame detection does not have much to do with ocr.

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Answer 1

Walter Roberson 2018-9-24

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https://ww2.mathworks.cn/matlabcentral/answers/420472-use-rnn-to-detect-key-frames-in-a-video#answer_338139

MATLAB has an ocr() function. You can train the underlying neural network with text in a variety of orientations.

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Hossam Elshahaby 2018-9-24

编辑：Hossam Elshahaby 2018-9-24

Hello Walter,

I have sequence of frames for news caption images cropped from real news video

for example: 6 frames

Obama will visit Ger
will visit Germany
l visit Germany next
Visit Germany next week
....text rotate....
He will sign contracts

The first and last one are unique (key frames)

This should be the output of the network.

How can I achieve that? What are the best algorithms to use?

Thanks

Walter Roberson 2018-9-24

This is resource for asking questions about how MATLAB works, for helping debug existing code, for helping locate MATLAB functions with specific purpose like "weibel fitting". It is not a resource for researching what imafe processing or deep learning algorithms exist and their tradeoffs.

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