I'm working on a project to analyze the motion of an object across a video, and I want to split the video into BufferedImage to analyze them frame by frame. Is OpenCV the best library for doing this? If so, how would the code look (I looked on their website but couldn't find it in the documentation). I'm new at this, so any help would be appreciated.
class org.opencv.videoio.VideoCapture allows to read video frame by frame.
Here is example of usage:
http://www.programcreek.com/java-api-examples/index.php?api=org.opencv.videoio.VideoCapture
Related
I've seen the usual way of taking a screenshot in Java where you use a Robot and a BufferedImage to take a screenshot. But is there a way of doing this without using Robot and BufferedImage?
Why?
I am working with JavaFX and I don't like mixing up AWT (Swing) and JavaFX.
Not a big problem, I know, but I would love to keep everything within one library.
I've also heard that Robot is a bit slow, but that's not the main reason.
EDIT: I would like to capture the whole screen and not just an area like a scene.
Thanks in advance :D
I have to make a Java program that gets XML files with simple snippets of code from several programming languages and draws them into a flowchart and makes it into a JPEG/PNG image, now I know it must be possible to do this but so far I haven't found anything to help me figure out how I can make Java draw an image and make it into a JPEG.
Is there any library I can use? A tutorial on this? Anything?
I've an issue with drawing an image histogram. I would like to create simple image histogram with basic adjustments. The problem is if there are simple libraries/sdk that could help achieve this. The technology does not matter. I've found that matlab has a lot of image/graph processing tools but it is still kid of "inaccessible" due to the tools. Java/Javascript/python/c# would be great so that I've tagged this question.
AFAIK we can take as eg. RGB components to draw histograms and there would be great if those library would allow to adjust them and in response process the image. I think what I'm looking for is often used in every tool working with graphics.
thx
For python you have matplotlib (http://matplotlib.org/index.html) , it's quite easy and very similar to matlab
Is there any way to add a video (not .gif pictures) as a background for a JButton? Or even for a JLabel?
I'm still a Java beginner so go easy on me please, I'm eager to learn :)
Java does not support video 'out of the box'. It would require some extra API such as JMF. Even then, it would take effort to shoehorn that video into the background of a JComponent.
Since you are a beginner, my advice is to start with (much) simpler tasks.
I'm writing a java App thats going to run on windows and uses the JMF, I've got the video capture working but I need to stop the Video Source Window from popping up each time I start the App, this is the first time I've used the JMF however I've looked at the Api and googled but found nothing that talks about the Video Source Window. Thanks.
Most likely you created your window like this:
ml is your MediaLocator
videoPanel is where your adding the video window too
Player player = Manager.createRealizedPlayer(ml);
Component video = player.getVisualComponent();
video.setSize(videoPanel.getSize());
video.setPreferredSize(videoPanel.getPreferredSize());
videoPanel.add(video);
player.start();
A simple solution would then to not add the video component to a panel and call player.stop();
But without any example of your code, all I can do is speculate.
Hope this helps