Fixed several opencv version references
This commit is contained in:
Andrey Kamaev
@@ -5,14 +5,14 @@
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Using Android binary package with Eclipse
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*****************************************
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This tutorial was tested using Ubuntu 10.04 and Windows 7 SP1 operating systems.
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Nevertheless, it should also work on any other **OS**\ es supported by Android SDK (including Mac OS X).
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This tutorial was tested using Ubuntu 10.04 and Windows 7 SP1 operating systems.
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Nevertheless, it should also work on any other **OS**\ es supported by Android SDK (including Mac OS X).
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If you encounter errors after following the steps described here, feel free to contact us via `android-opencv <https://groups.google.com/group/android-opencv/>`_ discussion group and we will try to help you.
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Quick environment setup for Android development
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===============================================
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If you are making a clean environment installation then you can try `Tegra Android Development Pack <http://developer.nvidia.com/tegra-android-development-pack>`_
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If you are making a clean environment installation then you can try `Tegra Android Development Pack <http://developer.nvidia.com/tegra-android-development-pack>`_
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(**TADP**) released by **NVIDIA**:
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It will cover all of the environment set up automatically and you can go to the next step :ref:`Get_the_OpenCV_package_for_Android_development` right after automatic setup.
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@@ -20,7 +20,7 @@ It will cover all of the environment set up automatically and you can go to the
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If you are a beginner in Android development then we recommentd you to start with TADP.
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.. note:: *NVIDIA*\ 's Tegra Android Development Pack includes some special features for |Nvidia_Tegra_Platform|_ but it is not just for *Tegra* devices
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+ You need at least *1.6 Gb* free disk space for installation.
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+ TADP will download Android SDK platforms and Android NDK from Google's server, so you need an Internet connection for the installation.
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@@ -37,7 +37,7 @@ If you are a beginner in Android development then we recommentd you to start wit
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.. |Tegra_Ventana_Development_Kit| replace:: Tegra Ventana Development Kit
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.. _Tegra_Ventana_Development_Kit: http://developer.nvidia.com/tegra-ventana-development-kit
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.. _Android_Environment_Setup_Lite:
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.. _Android_Environment_Setup_Lite:
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Manual environment setup for Android Development
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================================================
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@@ -48,7 +48,7 @@ You need the following tools to be installed:
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Visit `Java SE Downloads page <http://www.oracle.com/technetwork/java/javase/downloads/>`_ and download installer for your OS.
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Here is a detailed :abbr:`JDK (Java Development Kit)` `installation guide <http://source.android.com/source/initializing.html#installing-the-jdk>`_
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Here is a detailed :abbr:`JDK (Java Development Kit)` `installation guide <http://source.android.com/source/initializing.html#installing-the-jdk>`_
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for Ubuntu and Mac OS (only JDK sections are applicable for OpenCV)
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.. note:: OpenJDK is not usable for Android development because Android SDK supports only Sun JDK.
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@@ -76,7 +76,7 @@ You need the following tools to be installed:
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.. code-block:: bash
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sudo yum install libXtst.i386
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sudo yum install libXtst.i386
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#. **Android SDK components**
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@@ -91,21 +91,21 @@ You need the following tools to be installed:
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The minimal platform supported by OpenCV Java API is **Android 2.2** (API 8). This is also the minimum API Level required for the provided samples to run.
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See the ``<uses-sdk android:minSdkVersion="8"/>`` tag in their **AndroidManifest.xml** files.
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But for successful compilation of some samples the **target** platform should be set to Android 3.0 (API 11) or higher. It will not block them from running on Android 2.2+.
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.. image:: images/android_sdk_and_avd_manager.png
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:height: 500px
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:height: 500px
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:alt: Android SDK Manager
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:align: center
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See `Adding SDK Components <http://developer.android.com/sdk/adding-components.html>`_ for help with installing/updating SDK components.
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#. **Eclipse IDE**
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Check the `Android SDK System Requirements <http://developer.android.com/sdk/requirements.html>`_ document for a list of Eclipse versions that are compatible with the Android SDK.
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Check the `Android SDK System Requirements <http://developer.android.com/sdk/requirements.html>`_ document for a list of Eclipse versions that are compatible with the Android SDK.
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For OpenCV 2.4.x we recommend Eclipse 3.7 (Indigo) or later versions. They work well for OpenCV under both Windows and Linux.
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If you have no Eclipse installed, you can get it from the `download page <http://www.eclipse.org/downloads/>`_.
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#. **ADT plugin for Eclipse**
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This instruction is copied from `Android Developers site <http://developer.android.com/sdk/eclipse-adt.html>`_.
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@@ -122,14 +122,14 @@ You need the following tools to be installed:
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#. Click :guilabel:`OK`
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.. note:: If you have trouble acquiring the plugin, try using "http" in the Location URL, instead of "https" (https is preferred for security reasons).
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#. In the :guilabel:`Available Software` dialog, select the checkbox next to :guilabel:`Developer Tools` and click :guilabel:`Next`.
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#. In the next window, you'll see a list of the tools to be downloaded. Click :guilabel:`Next`.
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#. Read and accept the license agreements, then click :guilabel:`Finish`.
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.. note:: If you get a security warning saying that the authenticity or validity of the software can't be established, click :guilabel:`OK`.
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#. When the installation completes, restart Eclipse.
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#. When the installation completes, restart Eclipse.
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.. _Get_the_OpenCV_package_for_Android_development:
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@@ -151,15 +151,15 @@ Get the OpenCV package for Android development
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:align: center
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On Unix you can also use the following command:
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.. code-block:: bash
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tar -jxvf ~/Downloads/OpenCV-2.4.1-android-bin2.tar.bz2
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tar -jxvf ~/Downloads/OpenCV-2.4.2-android-sdk.tar.bz2
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For this tutorial I have unpacked OpenCV to the :file:`C:\\Work\\android-opencv\\` directory.
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.. |opencv_android_bin_pack| replace:: OpenCV-2.4.1-android-bin2.tar.bz2
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.. _opencv_android_bin_pack_url: http://sourceforge.net/projects/opencvlibrary/files/opencv-android/2.4.1/OpenCV-2.4.1-android-bin2.tar.bz2/download
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.. |opencv_android_bin_pack| replace:: OpenCV-2.4.2-android-sdk.tar.bz2
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.. _opencv_android_bin_pack_url: http://sourceforge.net/projects/opencvlibrary/files/opencv-android/2.4.2/OpenCV-2.4.2-android-sdk.tar.bz2/download
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.. |opencv_android_bin_pack_url| replace:: |opencv_android_bin_pack|
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.. |seven_zip| replace:: 7-Zip
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.. _seven_zip: http://www.7-zip.org/
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@@ -184,15 +184,15 @@ Open OpenCV library and samples in Eclipse
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:align: center
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Select :guilabel:`Use existing SDKs` option, browse for Android SDK folder and click :guilabel:`Finish`.
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To make sure the SDK folder is set correctly do the following step taken from `Configuring the ADT Plugin <http://developer.android.com/sdk/eclipse-adt.html#configuring>`_ document from *Google*:
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* Select :menuselection:`Window --> Preferences...` to open the Preferences panel (Mac OS X: :menuselection:`Eclipse --> Preferences`):
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.. image:: images/eclipse_2_window_preferences.png
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:alt: Select Window > Preferences...
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:align: center
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* Select :guilabel:`Android` from the left panel.
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You may see a dialog asking whether you want to send usage statistics to *Google*. If so, make your choice and click :guilabel:`Proceed`. You cannot continue with this procedure until you click :guilabel:`Proceed`.
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@@ -203,10 +203,10 @@ Open OpenCV library and samples in Eclipse
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:alt: Select Android from the left panel
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:align: center
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* For the SDK Location in the main panel, click :guilabel:`Browse...` and locate your Android SDK directory.
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* For the SDK Location in the main panel, click :guilabel:`Browse...` and locate your Android SDK directory.
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* Click :guilabel:`Apply` button at the bottom right corner of main panel.
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If the SDK folder is already set correctly you'll see something like this:
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.. image:: images/eclipse_4_locate_sdk.png
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@@ -219,10 +219,10 @@ Open OpenCV library and samples in Eclipse
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OpenCV library is packed as a ready-for-use `Android Library Project
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<http://developer.android.com/guide/developing/projects/index.html#LibraryProjects>`_. You can simply reference it in your projects.
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Each sample included into |opencv_android_bin_pack| is a regular Android project that already references OpenCV library.
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Follow next steps to import OpenCV and samples into workspace:
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* Right click on the :guilabel:`Package Explorer` window and choose :guilabel:`Import...` option from the context menu:
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.. image:: images/eclipse_5_import_command.png
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@@ -242,7 +242,7 @@ Open OpenCV library and samples in Eclipse
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:align: center
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* Click :guilabel:`Finish` button to complete the import operation.
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After clicking :guilabel:`Finish` button Eclipse will load all selected projects into workspace. And... will indicate numerous errors:
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.. image:: images/eclipse_8_false_alarm.png
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@@ -250,9 +250,9 @@ Open OpenCV library and samples in Eclipse
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:align: center
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However **all these errors are only false-alarms**!
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To help Eclipse to understand that there are no any errors choose OpenCV library in :guilabel:`Package Explorer` (left mouse click) and press :kbd:`F5` button on your keyboard. Then choose any sample (except first samples in *Tutorial Base* and *Tutorial Advanced*) and also press :kbd:`F5`.
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Sometimes more advanced manipulations are needed:
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* The provided projects are configured for `android-11` target that can be missing platform in your Android SDK. After right click on any project select :guilabel:`Properties` and then :guilabel:`Android` on the left pane. Click some target with `API Level` 11 or higher:
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@@ -266,7 +266,7 @@ Open OpenCV library and samples in Eclipse
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.. image:: images/eclipse_8b_fix_props.png
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:alt: Fixing project properties
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:align: center
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After this manipulation Eclipse will rebuild your workspace and error icons will disappear one after another:
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.. image:: images/eclipse_9_errors_dissapearing.png
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@@ -309,11 +309,11 @@ Well, running samples from Eclipse is very simple:
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:align: center
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* Select the :guilabel:`Android Application` option and click :guilabel:`OK` button. Eclipse will install and run the sample.
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Here is ``Tutorial 1 - Add OpenCV`` sample detecting edges using Canny algorithm from OpenCV:
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.. image:: images/emulator_canny.png
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:height: 600px
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:height: 600px
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:alt: Tutorial 1 Basic - 1. Add OpenCV - running Canny
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:align: center
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@@ -325,7 +325,7 @@ Application development with async initialization
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Using async initialization is a preferred way for application Development. It uses OpenCV Manager service to get OpenCV libraries.
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#. Add OpenCV library project to your workspace. Go to :guilabel:`File –> Import –> Existing project in your workspace`, push Browse button and select OpenCV SDK path.
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#. Add OpenCV library project to your workspace. Go to :guilabel:`File –> Import –> Existing project in your workspace`, push Browse button and select OpenCV SDK path.
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.. image:: images/eclipse_opencv_dependency0.png
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:alt: Add dependency from OpenCV library
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@@ -349,55 +349,55 @@ There is a very base code snippet for Async init. It shows only basis principles
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.. code-block:: java
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:linenos:
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public class MyActivity extends Activity implements HelperCallbackInterface
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{
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private BaseLoaderCallback mOpenCVCallBack = new BaseLoaderCallback(this) {
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@Override
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public void onManagerConnected(int status) {
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switch (status) {
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case LoaderCallbackInterface.SUCCESS:
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{
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Log.i(TAG, "OpenCV loaded successfully");
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// Create and set View
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mView = new puzzle15View(mAppContext);
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setContentView(mView);
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} break;
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default:
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{
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super.onManagerConnected(status);
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} break;
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}
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}
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};
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private BaseLoaderCallback mOpenCVCallBack = new BaseLoaderCallback(this) {
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@Override
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public void onManagerConnected(int status) {
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switch (status) {
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case LoaderCallbackInterface.SUCCESS:
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{
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Log.i(TAG, "OpenCV loaded successfully");
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// Create and set View
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mView = new puzzle15View(mAppContext);
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setContentView(mView);
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} break;
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default:
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{
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super.onManagerConnected(status);
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} break;
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}
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}
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};
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/** Called when the activity is first created. */
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@Override
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public void onCreate(Bundle savedInstanceState)
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{
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Log.i(TAG, "onCreate");
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super.onCreate(savedInstanceState);
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Log.i(TAG, "Trying to load OpenCV library");
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if (!OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_2_4_0, this, mOpenCVCallBack))
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{
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Log.e(TAG, "Cannot connect to OpenCV Manager");
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}
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}
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/** Called when the activity is first created. */
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@Override
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public void onCreate(Bundle savedInstanceState)
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{
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Log.i(TAG, "onCreate");
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super.onCreate(savedInstanceState);
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// ...
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Log.i(TAG, "Trying to load OpenCV library");
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if (!OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_2_4_0, this, mOpenCVCallBack))
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{
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Log.e(TAG, "Cannot connect to OpenCV Manager");
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}
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}
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// ...
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}
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It this case application works with OpenCV Manager in asynchronous fashion. OnManagerConnected callback will be called in UI thread, when initialization finishes.
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It this case application works with OpenCV Manager in asynchronous fashion. OnManagerConnected callback will be called in UI thread, when initialization finishes.
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Attention, It is not allowed to use CV calls or load OpenCV-dependent native libs before invoking this callback. Load your own native libraries after OpenCV initialization.
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Application development with static initialization
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--------------------------------------------------
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In this way of using OpenCV all OpenCV binaries a linked and put to your application package. It is designed for experimental and local development purposes only.
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In this way of using OpenCV all OpenCV binaries a linked and put to your application package. It is designed for experimental and local development purposes only.
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This way is depricated for production code. If you want to publish your app use approach with async initialization.
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#. Add OpenCV library project to your workspace. Go to :guilabel:`File –> Import –> Existing project in your workspace`, push Browse button and select OpenCV SDK path.
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#. Add OpenCV library project to your workspace. Go to :guilabel:`File –> Import –> Existing project in your workspace`, push Browse button and select OpenCV SDK path.
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.. image:: images/eclipse_opencv_dependency0.png
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:alt: Add dependency from OpenCV library
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@@ -8,16 +8,16 @@ Using C++ OpenCV code with Android binary package
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The Android way is writing all your code in Java. But somethimes it is not enough and you need to go to a native level and write part of your application in C/C++.
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This is important when you already have some computer vision functionality which is written in C++ and uses OpenCV, and you want to use it in your Android application,
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but do not want to rewrite the C++ code to Java.
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In this case the only way is to use JNI mechanism.
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but do not want to rewrite the C++ code to Java.
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In this case the only way is to use JNI mechanism.
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It means, that you should add a class with native methods wrapping your C++ functionality into the Java part of your Android application.
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This tutorial describes a fast way how to create and build Android applications containing OpenCV code written in C++. It shows how to build an application which uses OpenCV inside its JNI calls.
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Please note that before starting this tutorial you should fulfill all the steps, described in the tutorial :ref:`Android_Binary_Package`.
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This tutorial was tested using Ubuntu 10.04 and Windows 7 SP1 operating systems.
|
||||
Nevertheless, it should also work on Mac OS X. If you encounter errors after following the steps described here, feel free to contact us via
|
||||
This tutorial was tested using Ubuntu 10.04 and Windows 7 SP1 operating systems.
|
||||
Nevertheless, it should also work on Mac OS X. If you encounter errors after following the steps described here, feel free to contact us via
|
||||
`android-opencv <https://groups.google.com/group/android-opencv/>`_ discussion group and we will try to help you.
|
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@@ -32,10 +32,10 @@ To install Android NDK just extract the archive to some folder on your computer.
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.. note:: Before start you can read official Android NDK documentation which is in the Android NDK archive, in the folder :file:`docs/`.
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The main article about using Android NDK build system you can read in the file :file:`ANDROID-MK.html`.
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The main article about using Android NDK build system you can read in the file :file:`ANDROID-MK.html`.
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Also some additional useful information you can read in the files
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:file:`APPLICATION-MK.html`, :file:`NDK-BUILD.html`, and in the files :file:`CPU-ARM-NEON.html`, :file:`CPLUSPLUS-SUPPORT.html`, :file:`PREBUILTS.html`.
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:file:`APPLICATION-MK.html`, :file:`NDK-BUILD.html`, and in the files :file:`CPU-ARM-NEON.html`, :file:`CPLUSPLUS-SUPPORT.html`, :file:`PREBUILTS.html`.
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Theory: Android application structure
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=====================================
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@@ -67,22 +67,22 @@ where
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+ the :file:`libs` folder will contain native libraries after successful build,
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+ and the :file:`jni` folder contains C/C++ application source code and NDK's build scripts :file:`Android.mk` and :file:`Application.mk`.
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These scripts control the C++ build process (they are written in Makefile language).
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These scripts control the C++ build process (they are written in Makefile language).
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Also the root folder should contain the following files
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Also the root folder should contain the following files
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* :file:`AndroidManifest.xml` file presents essential information about application to the Android system
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(name of the Application, name of main application's package, components of the application, required permissions, etc)
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* :file:`AndroidManifest.xml` file presents essential information about application to the Android system
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(name of the Application, name of main application's package, components of the application, required permissions, etc)
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It can be created using Eclipse wizard or :command:`android` tool from Android SDK
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* :file:`project.properties` is a text file containing information about target Android platform and other build details.
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This file is generated by Eclipse or can be created with :command:`android` tool from Android SDK
|
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.. note:: Both files (:file:`AndroidManifest.xml` and :file:`project.properties`) are required to compile the C++ part of the application (NDK build system uses information from these files). If any of these files does not exist, compile the Java part of the project before the C++ part.
|
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.. note:: Both files (:file:`AndroidManifest.xml` and :file:`project.properties`) are required to compile the C++ part of the application (NDK build system uses information from these files). If any of these files does not exist, compile the Java part of the project before the C++ part.
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.. _NDK_build_cli:
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@@ -90,7 +90,7 @@ Also the root folder should contain the following files
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Theory: How to build Android application having C++ native part (from command line)
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===================================================================================
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Here is the standard way to compile C++ part of an Android application:
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Here is the standard way to compile C++ part of an Android application:
|
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#. Open console and go to the root folder of Android application
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@@ -114,7 +114,7 @@ Here is the standard way to compile C++ part of an Android application:
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#. After executing this command the C++ part of the source code is compiled.
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After that the Java part of the application can be (re)compiled (using either *Eclipse* or :command:`ant` build tool).
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After that the Java part of the application can be (re)compiled (using either *Eclipse* or :command:`ant` build tool).
|
||||
|
||||
.. note:: Some parameters can be set for the :command:`ndk-build`:
|
||||
|
||||
@@ -148,18 +148,18 @@ We recommend the approach based on Eclipse :abbr:`CDT(C/C++ Development Tooling)
|
||||
|
||||
To install the `CDT plugin <http://eclipse.org/cdt/>`_ use menu ``Help`` -> ``Install New Software...``,
|
||||
then paste the CDT 8.0 repository URL http://download.eclipse.org/tools/cdt/releases/indigo as shown on the picture below and click :guilabel:`Add...`, name it *CDT* and click :guilabel:`OK`.
|
||||
|
||||
|
||||
.. image:: images/eclipse_inst_cdt.png
|
||||
:alt: Configure builders
|
||||
:align: center
|
||||
|
||||
``CDT Main Features`` should be enough:
|
||||
|
||||
|
||||
.. image:: images/eclipse_inst_cdt_2.png
|
||||
:alt: Configure builders
|
||||
:align: center
|
||||
|
||||
|
||||
|
||||
.. important:: OpenCV 2.4.2 for Android package contains samples projects pre-configured to use CDT Builder for JNI part build via ``ndk-build``.
|
||||
|
||||
#. Define the ``NDKROOT`` environment variable containing the path to Android NDK in your system (e.g. **"X:\\Apps\\android-ndk-r8"** or **"/opt/android-ndk-r8"**)
|
||||
@@ -174,13 +174,13 @@ then paste the CDT 8.0 repository URL http://download.eclipse.org/tools/cdt/rele
|
||||
#. Use menu :guilabel:`Project` -> :guilabel:`Clean...` to make sure that NDK build is invoked on the project build:
|
||||
|
||||
.. image:: images/eclipse_ndk_build.png
|
||||
:alt: Select resources folder to refresh automatically
|
||||
:alt: Select resources folder to refresh automatically
|
||||
:align: center
|
||||
|
||||
Theory: The structure of :file:`Android.mk` and :file:`Application.mk` scripts
|
||||
==============================================================================
|
||||
|
||||
The script :file:`Android.mk` usually have the following structure:
|
||||
The script :file:`Android.mk` usually have the following structure:
|
||||
|
||||
.. code-block:: make
|
||||
|
||||
@@ -211,7 +211,7 @@ Practice: Build samples from OpenCV binary package
|
||||
OpenCV binary package includes 3 samples having JNI resources:
|
||||
|
||||
* *Tutorial 3 (Advanced) - Add Native OpenCV*
|
||||
|
||||
|
||||
This sample illustrates how you can use OpenCV in C++ but without OpenCV Java API.
|
||||
|
||||
* *Tutorial 4 (Advanced) - Mix Java+Native OpenCV*
|
||||
@@ -221,7 +221,7 @@ OpenCV binary package includes 3 samples having JNI resources:
|
||||
* *Sample - face-detection*
|
||||
|
||||
This sample illustrates usage of both simple OpenCV face detector via Java API and advanced detection based face tracker via JNI and C++.
|
||||
|
||||
|
||||
.. important:: Before OpenCV **2.4.2** for Android these projects were not configured to use CDT for building their native part , so you can do it yourself.
|
||||
|
||||
Practice: Create an Android application, which uses OpenCV
|
||||
@@ -238,7 +238,7 @@ To build your own Android application, which uses OpenCV from native part, the f
|
||||
For detailed information see the Android NDK documentation from the Android NDK archive, in the file
|
||||
:file:`<path_where_NDK_is_placed>/docs/ANDROID-MK.html`
|
||||
|
||||
#. The line
|
||||
#. The line
|
||||
|
||||
.. code-block:: make
|
||||
|
||||
@@ -274,15 +274,15 @@ To build your own Android application, which uses OpenCV from native part, the f
|
||||
|
||||
.. code-block:: make
|
||||
|
||||
APP_STL := gnustl_static
|
||||
APP_STL := gnustl_static
|
||||
APP_CPPFLAGS := -frtti -fexceptions
|
||||
|
||||
Also the line
|
||||
|
||||
.. code-block:: make
|
||||
|
||||
APP_ABI := armeabi-v7a
|
||||
APP_ABI := armeabi-v7a
|
||||
|
||||
is recommended for the applications targeting modern ARMs
|
||||
|
||||
is recommended for the applications targeting modern ARMs
|
||||
|
||||
#. Either use :ref:`manual <NDK_build_cli>` ``ndk-build`` invocation or :ref:`setup Eclipse CDT Builder <Android_NDK_integration_with_Eclipse>` to build native JNI lib before Java part [re]build and APK creation.
|
||||
|
||||
Reference in New Issue
Block a user