Comments on: Cool Feature: Video processing demos http://blogs.mathworks.com/videos/2008/01/18/cool-feature-video-processing-demos/ Doug Hull is a proud MathWorker who is on a mission to help you with MATLAB. Sun, 22 Nov 2009 23:40:57 +0000 http://wordpress.org/?v=2.3.1 By: dhull http://blogs.mathworks.com/videos/2008/01/18/cool-feature-video-processing-demos/#comment-1528 dhull Wed, 05 Aug 2009 20:07:50 +0000 http://blogs.mathworks.com/videos/2008/01/18/cool-feature-video-processing-demos/#comment-1528 jhon, I think you need to be more specific with your question. What do you mean by "executing an event" This makes me think of either callbacks or Simulink/Stateflow. You want this event to trigger and external device. Do you know how to trigger the external advice in MATLAB? Are you trying to work in "hard real time"? Doug jhon,

I think you need to be more specific with your question.

What do you mean by “executing an event” This makes me think of either callbacks or Simulink/Stateflow.

You want this event to trigger and external device. Do you know how to trigger the external advice in MATLAB? Are you trying to work in “hard real time”?

Doug

]]> By: jhon diaz http://blogs.mathworks.com/videos/2008/01/18/cool-feature-video-processing-demos/#comment-1527 jhon diaz Tue, 04 Aug 2009 20:24:59 +0000 http://blogs.mathworks.com/videos/2008/01/18/cool-feature-video-processing-demos/#comment-1527 Hi. I'm a beginer in Matlab and since three months ago I started working with video files. With the image processing toolbox and image acquisition toolbox I can select my frames and process some analysis, however I'm planning to execute an event depending on what happens in the video (tracking objects). This event is to output a signal for triggering an external device. Could someone give me an idea of how to do this? Thanks a lot. Hi.
I’m a beginer in Matlab and since three months ago I started working with video files. With the image processing toolbox and image acquisition toolbox I can select my frames and process some analysis, however I’m planning to execute an event depending on what happens in the video (tracking objects). This event is to output a signal for triggering an external device. Could someone give me an idea of how to do this? Thanks a lot.

]]> By: Scott Hirsch http://blogs.mathworks.com/videos/2008/01/18/cool-feature-video-processing-demos/#comment-774 Scott Hirsch Thu, 28 Aug 2008 17:47:58 +0000 http://blogs.mathworks.com/videos/2008/01/18/cool-feature-video-processing-demos/#comment-774 Elya - In v7.0, try aviread. This has straightforward syntax for reading a single frame - you could just embed in a for loop if that's appropriate. Readers with newer versions should check out mmreader - introduced on Windows in R2007b, Mac in R2008a. - scott Elya -

In v7.0, try aviread. This has straightforward syntax for reading a single frame - you could just embed in a for loop if that’s appropriate.

Readers with newer versions should check out mmreader - introduced on Windows in R2007b, Mac in R2008a.

- scott

]]> By: elya http://blogs.mathworks.com/videos/2008/01/18/cool-feature-video-processing-demos/#comment-773 elya Thu, 28 Aug 2008 02:04:04 +0000 http://blogs.mathworks.com/videos/2008/01/18/cool-feature-video-processing-demos/#comment-773 hi,i'm using MATLAB 7.0. i'm a beginner. I want to read/call video (.avi) file in MATLAB but i couldn't find any function. how to call the video (.avi) in matlab? how to extract the video frame by frame? thanks hi,i’m using MATLAB 7.0.

i’m a beginner. I want to read/call video (.avi) file in MATLAB but i couldn’t find any function. how to call the video (.avi) in matlab? how to extract the video frame by frame?

thanks

]]> By: Szymon Gackowski http://blogs.mathworks.com/videos/2008/01/18/cool-feature-video-processing-demos/#comment-772 Szymon Gackowski Tue, 05 Feb 2008 16:57:53 +0000 http://blogs.mathworks.com/videos/2008/01/18/cool-feature-video-processing-demos/#comment-772 Thank you Bruce! That was very helpful! Thank you Bruce!
That was very helpful!

]]> By: Bruce Tannenbaum http://blogs.mathworks.com/videos/2008/01/18/cool-feature-video-processing-demos/#comment-771 Bruce Tannenbaum Mon, 04 Feb 2008 15:10:58 +0000 http://blogs.mathworks.com/videos/2008/01/18/cool-feature-video-processing-demos/#comment-771 Hi Szymon, With the Image Acquisition Toolbox, you can acquire images or video into Simulink and/or MATLAB. For Simulink, you would use the "From Video Device" block. This supports USB web cameras, as well as a broad range of frame grabbers and scientific digital cameras. For more information on the supported hardware, look here: http://www.mathworks.com/products/imaq/supportedio.html - Bruce Hi Szymon,

With the Image Acquisition Toolbox, you can acquire images or video into Simulink and/or MATLAB. For Simulink, you would use the “From Video Device” block. This supports USB web cameras, as well as a broad range of frame grabbers and scientific digital cameras. For more information on the supported hardware, look here: http://www.mathworks.com/products/imaq/supportedio.html

- Bruce

]]> By: Szymon Gackowski http://blogs.mathworks.com/videos/2008/01/18/cool-feature-video-processing-demos/#comment-770 Szymon Gackowski Sun, 03 Feb 2008 12:36:34 +0000 http://blogs.mathworks.com/videos/2008/01/18/cool-feature-video-processing-demos/#comment-770 ok, that is really cool. But is there any possibility to do this in real time using data aquisition? how to aquire data from usb web cam? best regards! Simon ok, that is really cool. But is there any possibility to do this in real time using data aquisition? how to aquire data from usb web cam?
best regards!
Simon

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