Real time video feature ectraction

ali
2013 4 20
1 个回答
回答已采纳
更新时间：2020 3 31
12 次查看（30 天）

0 个投票

hi all,
is there a way or code for feature extract video stream in matlab?
If possible, can we save this to mat file or somewhere else.
thanks for attention

2 个评论
显示 无 隐藏 无

kassem EL KEBBAR
kassem EL KEBBAR 2017-3-2
hello , have you resolved the problem ??
Kenta
Kenta 2020-3-31
As of today, a use of pre-traniend network (CNN) is effective for image feature extraction.
The demo below shows the example. I hope it helpe you,
https://jp.mathworks.com/matlabcentral/fileexchange/74402-video-classification-using-lstm-lstm

请先登录，再进行评论。

请先登录，再回答此问题。

 采纳的回答

Image Analyst
Image Analyst 2013-4-20

0 个投票

Yes.

8 个评论
显示 6更早的评论 隐藏 6更早的评论

ali
ali 2013-4-20
so how can we fing ı cant find on fileexcahnge or newsreader?
could you please show the links?
ali
ali 2013-4-20
thanks for attention.
I know these files,
Just want to know is the best way for feature extract from video is that convert it to frames or can we extract features without convert to frames.
Walter Roberson
Walter Roberson 2013-4-20
You do not need to convert it all to frames before you start. You can convert each frame as you need it.
Image Analyst
Image Analyst 2013-4-20
A video is a time sequence of 2D images. You do feature extraction on the image. You can work on one image at a time, or, like with motion estimation and tracking, you can use several of the images. It really depends on what you want to do. But to answer your question, you can't extract features without converting to frames, unless it's something really useless like what's the mean intensity of everything. Anything useful will require you to process the image(s).
ali
ali 2013-4-20
Walter Roberson and Image Analyst, thanks for great attention.
Then just wonder, when videois playing (real time) for example taking with camera, which frame we want to extract feature just take inside from video?
Then extract features from this frame and classify?
Image Analyst
Image Analyst 2013-4-20
Take every one that you can. I mean, how can you know if a frame has what you're looking for until you look for it?
ali
ali 2013-4-24
Ok. Thanks ı got it.
So can we save each frame features to mat file?
and How and where we can find codes for that?

请先登录，再进行评论。

更多回答（0 个）

类别

在 帮助中心 和 File Exchange 中查找有关 Image Processing and Computer Vision 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by