Beta: OpenCapture

Welcome to our brand new Clickteam Community Hub! We hope you will enjoy using the new features, which we will be further expanding in the coming months.

A few features including Passport are unavailable initially whilst we monitor stability of the new platform, we hope to bring these online very soon. Small issues will crop up following the import from our old system, including some message formatting, translation accuracy and other things.

Thank you for your patience whilst we've worked on this and we look forward to more exciting community developments soon!

Clickteam.

    Just curious, but how much longer is it going to take for the next update to be finished? I'm really looking forwards to an Android port, since I'll actually be able to use that (since I have an Android device with a camera).

    My Please login to see this link. (which I actually use), my Please login to see this link. (which I mostly don't use), and my Please login to see this link. (which I don't use anymore pretty much at all really). If there are awards for "'highest number of long forum posts", then I'd have probably won at least 1 by now. XD

    I can only work on my extensions during short sessions at the moment (1hour max) so I made rather small tasks (BrainControl and SoundTouch extensions). The modifications in OpenCapture, the PocketSphinx and eventually the Spriter extensions require minimum 3hour sessions to make good steps. In other words, it would rather be available in 1 or 2 months.

    Damien

    Yes, the latest version is 1.1. I still need to implement these 3 features before releasing the extension:
    - expressions to retrieve the rotation matrix and translation matrix to be able to integrate 3D objects on top of the camera preview (Augmented Reality).
    - possibility to load a collection of feature objects to be able to recognize objects quickly on the camera scene.
    - implement super resolution algorithm which can improve the image quality although the resolution is very low.

    My short-term goal is to have something really stable to allow people to develop serious and commercial projects, not only for testing. A good but unfinished extension would be the worst I can do.

    Damien

    I have been testing the extension. I have been able to get it working with my webcam and saving snapshots to a hard drive.

    However I would like to see these functions added.

    1. The ability to detect movement by comparing two photos.

    2. Ability to limit areas to look for movement in. Example if I have a picture of a room I want it to just check the area of the door or window and not the entire picture area of the room.

    3. Abilty to use the sound feature to hear sounds using the webcam microphone.

    4. Ability to send messages via email for example based on movement events.

    OpenCapture isn't for audio. For audio capture, maybe you would like the PocketSphinx object, which is in development by the same developer. It isn't capable of capturing anything other than voice, as it is a voice recognition extension, but it can do that particular job quite well from my experience with the early version of the extension.

    As for E-mail, that is beyond the scope of this object as well. This is merely an implementation of the OpenCapture library, not an implementation of everything possible with it.

    My Please login to see this link. (which I actually use), my Please login to see this link. (which I mostly don't use), and my Please login to see this link. (which I don't use anymore pretty much at all really). If there are awards for "'highest number of long forum posts", then I'd have probably won at least 1 by now. XD

    All ideas are welcome. However, I think only the 2 first suggestions would make sense for this extension.

    Quote from droberson


    1. The ability to detect movement by comparing two photos.

    By "comparing 2 photos", I understood subtracting all pixels from one image to the one. It is the easiest way to detect movements but it would give bad result.
    In the best case, no illumination change and static background, you will have so much noise that you would not be able to detect where is the object that is moving.
    It exists some really performant algorithmus to detect movement that I did not implement but there are already 3 possibilities which are already coded:
    - detect movements with object color
    - detect movements based on a known object (Cascade classifier, typically face detection) or on a feature object (playing card for example).

    Quote from droberson


    2. Ability to limit areas to look for movement in. Example if I have a picture of a room I want it to just check the area of the door or window and not the entire picture area of the room.

    It could be a good idea to define a region of interest. I need to think about it to see if it is worth he effort.

    Quote from droberson


    3. Abilty to use the sound feature to hear sounds using the webcam microphone.

    4. Ability to send messages via email for example based on movement events.


    As happygreenfrog said, the idea is not to have an implementation of everything possible with this extension. You need to have an email extension or a microphone extension which will do the job in parallel. Therefore you have more freedom to implement everything you need. It is the idea of MMF2, isn't it?

    Damien

    Yes I see what you mean. I was just thinking that a lot of ip cameras and webcam come with speakers and microphones built-in. Anyway no big deal.

    I saw an article that gave some approaches to how to detect movement. I'll see if I can find that link.

    Hi, just wondering if there is a way of just doing a simple color check on pixels using opencapture? So a simple get RGB color at X,Y?

    Thanks
    Andy

    Parafly Paragliding Simulator Please login to see this link.

    Hi, earlier I enquired about getting pixel colors in RGB and you explained that currently I can get them in HSV. Is there any easy way to convert the HSV to RGB. If not how exactly do i get HSV at a pixel?

    I dont want to use the "color" tracking feature, I simply want to "get colour" at pixel?

    Thanks
    Andy

    Parafly Paragliding Simulator Please login to see this link.

    Hi Gibbon,

    I checked my code and I was surprised to see that I already prepared an expression to retrieve RGB values for a given position.
    This expression is in the tracking color menu but you don't need to track a color to use it.

    Damien

    Ahh cheers, thats good. Ill give that a go.

    The other feature i cant seem to get working is save video stream to file? Simply doesnt seemt to do anything, is there something other than "start saving video stream"?

    Thanks
    Andy

    Parafly Paragliding Simulator Please login to see this link.

    Hi gibbon,

    by "start saving stream",you must give a code id or -1 to let the user choose the codec. If you choose one, you must be sure that this codec is available on the target PC.
    And at the end, you must call "stop saving steam".

    Damien

    Excellent your extension !
    I´m using it with disability children for computer control . I would like to know if I can rotate the camera preview (portrait).
    We rotate 90 degrees the camera for better visualization of the user's face (more visible face and upper body area) so, we need the correct preview of video.
    It´s possible to do that with the actual version (1.1)? Can you make that feature for the next version of opencapture extension ?

    Thank you


    Nando

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