chrichri's profile - activity

I'm sorry. I have FFmpeg library that receive frames from GoPro and I can restream that frames in any protocol in a loca

Then your suggest is to take the GoPro frame from FFmpeg and save them to memory, and so read them from OpenCV, is it ri

Android- Read Streaming from FFmpeg Hello! I receive frames streaming from Android (From a GoPro). I need to restream t

Thank you very much! Yes it is the same app! But I use a vlc library that take the udp stream from a GoPro and display

Android OpenCV - Take Mat object from VideoView/SurfaceView Hello! In my Android app there is a VideoView (I can also u

Android OpenCV - Take Mat object from VideoView/SurfaceView Hello! In my Android app there is a VideoView (I can also u

Android OpenCV - Take Mat object from VideoView/SurfaceView Hello! In my Android app there is a VideoView (I can also u

ANDROID Open FFmpeg frames Hello, I have used OpenCV in Android to display frames from the camera, with "public Mat onC

ANDROID Open FFmpeg frames Hello, I have used OpenCV in Android to display frames from the camera, with "public Mat onC

ANDROID Open FFmpeg frames Hello, I have used OpenCV in Android to display frames from the camera. Now, I can receive

Thank you very much for your response!

The problem is that I must take (from my Android App) the live frame from a GoPro Hero4..

I have seen that I can obtain the live frame using some script or a single linux command: ffplay -an -fflags nobuffer -f:v mpegts -probesize 8192 rtp://10.5.5.9:8554

is there a way to take the frame in the Android App and pass them to onCameraFrame? (Frames can also go through a script in the computer)...

Thank you very much!

Hello!

In my Android App, I need to take (using OpenCv library) a stream from a pc in the Lan (I have the ip and UDP port of the stream). The stream must be displayed in the JavaCameraView, and the frames of this stream, must be elaborate by the "onCameraFrame(CvCameraViewFrame inputFrame)" method..

Can you help me?

Thank You very much!

Hello!

I have developed an Android App that take frames from opencv.android.JavaCameraView and processes them through the onCameraFrame method. Now I have a problem. I need to take the frames from a GoPro so that I can processes them.

How can I do to take the frames from a GoPro and processes them with the onCameraFrame method?

Thank You Very Much!!

Best Regards!

Hello! I have developed an app that use the org.opencv.android.JavaCameraView. My problem is that if I run the application in Asus P00C (10' ) it works well (the camera view is full screen). If I run the application in a SAMSUNG SM-T713 (8') the camera does not cover the entire display. In this case though, the application works in full screen because a textview compare in the black part of the screen where the camera view does not arrive.

This is the xml code:

** <android.support.constraint.constraintlayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:opencv="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context="underwater.sapienza.com.markerrecognition.MainActivity">

<org.opencv.android.JavaCameraView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:visibility="visible"
    android:id="@+id/tutorial1_activity_java_surface_view"
    opencv:camera_id="any"
    tools:layout_editor_absoluteY="0dp"
    tools:layout_editor_absoluteX="0dp" />

<linearlayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical" tools:layout_editor_absolutey="0dp" tools:layout_editor_absolutex="0dp">

<TextView
    android:id="@+id/textView"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Nessun marker!"
    android:textSize="70sp"

     />

<TextView
    android:id="@+id/textView2"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Nessun marker!"
    android:textSize="70sp"

    />

<LinearLayout
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:orientation="horizontal"
    >

<Button
    android:id="@+id/buttonDiminuisciSoglia"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:onClick="diminuisciSogliaMinima"
    android:text="DIMINUISCI SOGLIA MINIMA" />

<TextView
    android:id="@+id/textViewSogliaMinima"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text=""
    android:textSize="20sp"

    />

<Button
    android:id="@+id/buttonAumentaSoglia"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:onClick="aumentaSogliaMinima"
    android:text="AUMENTA SOGLIA MINIMA" />


    </LinearLayout>

</linearlayout>

</android.support.constraint.constraintlayout>

**

Can you help me??

Thank you very much!

Best Regards!!

is there anybody that can help me? I can not find a good and easy tutorial to do this app..

Ok thanks! unfortunately I do not know where to start to learn how to implement an Android Studio Marker Recognition..

Thank you very much for your answer!

Yes, I am free to choose and the Aruco Markers are very good!

I think that I must use C++ code in my Android Application. But I can not find tutorial on how to import Aruco Library and use it.

Can you help me?

thank you very much!

Hello! I am not OpenCV expert! I need to develop an Android App that recognizes images of Marker saved in memory.

I have developed an App that uses the "public Mat onCameraFrame(CvCameraViewFrame inputFrame)" method, to capture the frames by the camera.

In this metod I have got two Mat object: - inputFrame--> the actual frame captured from the camera - markerImage--> a Mat object that load an image marker from tablet memory

How can I check if in the inputFrame there is the markerImage and so do anything? Is my approach correct?

Thank you very much! Best Regard

Hello! I need to develop an App Android that recognizes Marker by the camera (it has more Image Marker saved in memory). I don't know so well OpenCV. There are no online tutorials about this.

Can you help me?

Thank you very much!

Best regards!