I am using vuforia video playback demo with cloud recognition.
I have combined both projects and it is working properly. But currently video dimension is according to detected object. But i need fixed width and height when video plays.
Can anyone help me ?
Thanks in advance.
Well apparently Vuforia fixes the width and height at the start of the game no matter what the size of the object is. I could not find when exactly this operation is conducted but it is done at beginning of your game. When you change the size of the ImageTarget in runtime it is not fixed anymore. Add these lines to your OnTrackingFound function of DefaultTrackableEventHandler.cs
if (this.name == "WhateverTheNameOfYourRelatedImageTarget"&& !isScaled)
{
//Increase the size however you want i just added 1 to each dimension
this.transform.localScale += Vector3.one;
// make isScaled true not to scale every time it is found initially it shoud be false
isScaled = true;
}
Good luck!
What i usually do is , instead of Videoplayback , i play the video on canvas object and hook this object to Defaulttrackableeventhandler script. So when target is found, gameobject.setactive(true) and gameobject.setactive(false) when target is lost. By this method the size of the gameobject is fixed and it stays in a fixed location .
I just made an example you can get here (have to import it to any project and open the scene Assets/VideoExample/Examples). You can see there a bit clearer what the ScreenSpace - Overlay does ... it might be better to just switch to ScreenSpace - Camera in general
I'm developing a Windows 8.1 Store App. I have a CommandBar control with a couple of AppBarButtons inside. Using the standard icons is easy, I just set the icon property to the appropriate string like so :
<AppBarButton Icon="Download" Label="Download Files"/>
I'd like to use a couple of custom icons from the very nice free collection Modern UI Icons. Ideally, I'd like to be able to set the icon property in much the same way :
<AppBarButton Icon="transit.distance.to" Label="Distance to destination"/>
This would refer to this icon : PNG / XAML
Is this possible ?
If not, what are the alternatives ?
Tim Heuer proposes using a font file, although at present the font files available here only cover a sub-set of the icons, and also this code is quite unreadable :
<FontIcon FontFamily="ms-appx:///modernuiicons.ttf#Modern-UI-Icons---Social" Margin="0,2,0,0" Glyph="" FontSize="37.333" />
Would you believe that shows a twitter icon?!
Tim Heuer also proposes using vector data, and one of the commenters explains how the vector data can be rolled into a style. I could do that, but then I would have to copy and paste the path data for each icon I want to include ?
Should I be using the PNG files, as explained in this question ? That looks pretty messy as well.
What a nightmare!
I'm not sure what the nightmare part is -- you want to use a custom icon that isn't present in the 200+ supplied defaults. You have options:
Use SymbolIcon and supply your own font. You note that you don't like that the code feels unreadable. Unicode ranges are universally used for symbol fonts and I agree that Unicode isn't human-readable, but a simple code comment would help ;-) Fonts give you the most ease and flexibility because they are also vectors.
PathIcon. You convert your image into vector geometries we can render. This would be the second best, but also requires a bit fine tuning of the vectors to get right. For people not familiar with working with geometries this can be annoying at first. Blend and Inkscape are helpful tools here.
BitmapIcon. This would allow you to use your PNG, however you now must supply multiple of them for different scales and states. This is my least favorite option as it requires most work, but for some may be the simplest. Now your problem you will hit is there is an issue with BitmapIcon for non-rectangular shapes (which looks like your icon is). This won't have the fidelity you seek due to a bug in rasterizing.
Contact metroicon author and see if he can put it into the font file so you can use option #1 :-)
Maybe this is what you're looking for:
<AppBarButton Label="Transit">
<AppBarButton.Icon>
<PathIcon Data="F1 M 3.912,17.38C 4.89067,17.38 5.688,18.2653 5.688,19.3586C 5.688,20.448 4.89067,21.3333 3.912,21.3333C 2.92667,21.3333 2.136,20.448 2.136,19.3586C 2.136,18.2653 2.92667,17.38 3.912,17.38 Z M 16,17.38C 16.984,17.38 17.776,18.2653 17.776,19.3586C 17.776,20.448 16.984,21.3333 16,21.3333C 15.016,21.3333 14.224,20.448 14.224,19.3586C 14.224,18.2653 15.016,17.38 16,17.38 Z M 21.3333,18.9626L 18.464,18.9626C 18.292,17.62 17.2547,16.5933 16,16.5933C 14.7453,16.5933 13.708,17.62 13.536,18.9626L 6.37467,18.9626C 6.20267,17.62 5.16667,16.5933 3.912,16.5933C 2.656,16.5933 1.62,17.62 1.448,18.9626L 0,18.9626L 0,10.2706C 0,9.396 0.636,8.69196 1.42133,8.69196L 19.5573,8.69196C 20.3387,8.69196 20.9787,9.396 20.9787,10.2706M 20.4427,10.2706L 19.1973,10.2706L 19.1973,15.8013L 20.62,15.8013M 17.776,13.432L 17.776,10.2706L 14.224,10.2706L 14.224,13.432M 13.5107,10.2706L 9.95333,10.2706L 9.95333,13.432L 13.5107,13.432M 9.24533,10.2706L 5.688,10.2706L 5.688,13.432L 9.24533,13.432M 4.97867,10.2706L 1.42133,10.2706L 1.42133,13.432L 4.97867,13.432M 14.5787,2.36932L 12.4427,0L 15.2867,0L 17.776,2.45862L 17.776,0L 19.1973,0L 19.1973,6.31732L 17.776,6.31732L 17.776,3.85864L 15.2867,6.31732L 12.4427,6.31732L 14.5787,3.948L 7.73467,3.948C 7.41733,5.31195 6.30267,6.31732 4.97867,6.31732C 3.40667,6.31732 2.136,4.90533 2.136,3.16132C 2.136,1.41064 3.40667,0 4.97867,0C 6.30267,0 7.41733,1.00531 7.73467,2.36932L 14.5787,2.36932 Z " HorizontalAlignment="Center" VerticalAlignment="Center"/>
</AppBarButton.Icon>
</AppBarButton>
Hope this helps!
I'm programming in C++ using OpenCV in an object oriented approach. Basically I have an array of object called People[8]. For each array, I want to allocate an image to it by taking a picture using webcam. I did something like this:
for (int i=0; i<8; i++){
cvWaitKey(0); //wait for input then take picture
Mat grabbed = cam1.CamCapture();
People[i].setImage(grabbed);
imshow("picture", grabbed);
cvWaitKey(1);
}
I face 2 problems here:
1) The imshow does not display the 'latest' image captured, it display the image previously taken i.e (i-1) instead of i.
2) When I display all the images together, 8 windows appear and all of them are displaying the last image captured on the camera.
I do not have any clue what is wrong, could anyone please advice? Thank you in advance.
"all of them are displaying the last image captured on the camera."
the images you get from the capture point to driver memory. so the former image gets overwritten by the latter.
you need to store a clone() of the mat you get, like:
People[i].setImage( grabbed.clone() );
I have not worked with OpenCV for a while but I would move around cvWaitKey( 1 ), I also would not have 2 calls to it, from what I remember it is similar to glFlush(). Also I would change 1 to 10. For some reason I remember 1 not working.
As the title says, the height of my tabs is not increasing as it should, my code looks like this:
JTabbedPane jtp = new JTabbedPane();
JLabel iconInTab = new JLabel(new ImageIcon("myImage.png"));
iconInTab.setPreferredSize(new Dimension(100,80)); // is the size of my Image, I've also try to do this using getSize
jtp.addTab(null,new JPanel());
jtp.setTabComponentAt(0,iconInTab);
I've also try this using html but it did not work either:
jtp.addTab("<html><p><p><p></html>",new ImageIcon("myImage.png"),new JPanel());
with the first code the problem is not the change of the size horizontally (the width change correctly), the problem is only on the height, with the second code, if I add multiple lines inside the html code, the text appear incomplete (just show the middle line) (also the width behaves as expected, the problem is the height). . .
why is this happening? or how could I get this done?
Note: S.O.: Mac OS X 10.8.1
Solved!!! The problem was that the default UI over MAC OS X (com.apple.laf.AquaTabbedPaneContrastUI), you only need to change it to the basicTabbedPaneUI (or the one of your preference), in my particular case I need to extend this class (it was a pain in the *, because what I wanted was really complex) to get the look & feel that I was expecting, if you have the same trouble just do this before adding your tabs:
myTabbedPane.setUI(new BasicTabbedPaneUI());
Note: Checking the default UI of your TabbedPane, may solve many different problems.
can you suggest a good option for background subtraction using emgucv? my project is real time pedestrian detection.
Not sure if you still need this, but...in EmguCV, if you have 2 images of say type Image<Bgr, Byte> or any other type, called img1 and img2, doing img1 - img2 does work! There is a function called AbsDiff as well, I think it works like this: img1.AbsDiff(img2), you could look into that.
If you already have the picture of the background (img1) and you have the current frame (img2), you could do the above.
This is quite possible take a look at the "MotionDetection" example provided with EMGU this should get you started.
Effectively the code that removes the foreground is effectively named "_forgroundDetector" it is the "_motionHistory" that presents stores what movement has occurred.
The example has everything you need if you have trouble running it let me know,
Cheer
Chris
See:Removing background from _capture.QueryFrame()