opencv3-android-sdk-with-contrib
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Build OpenCV3 Android SDK with contrib modules
OpenCV 3.3.1 Android SDK with contrib modules
The official build doesn't provide contrib modules. This build includes all the opencv-contrib
modules.
Download
Go to ./OpenCV-android-sdk
, just like the offical SDK, all are there including contrib modules.
~~For someone who are curious about the generated JNI code, go to ./o4a
or other build intermediate directories.~~
How to build yourself
Please refer to https://chao.yang.to/post/build-opencv-android-sdk/
How to Use in your Android project
import into existing project
-
In Android Studio,
File -> New -> Import Module..
, selectOpenCV-android-sdk/sdk/java
, then a new library module will be imported. -
Copy the pre-compiled libs in
OpenCV-android-sdk/sdk/native/libs
intojniLibs
of your Android studio module.
Avoid installing OpenCV Manager
If you don't want to install OpenCV Manager
, you need to embed openCV library into your App.
New a subclass of android.app.Application
class, in this class, put this line:
static {
if (!OpenCVLoader.initDebug()) {
Log.e(TAG, "Cannot load OpenCV library");
}
}
Don't use OpenCVLoader.initAsync(..)
. That's it.
Filter out specific CPU architecture
If you want to keep your release App slim and only support some architectures, add this line into your module's build.gradle
:
externalNativeBuild {
cmake {
abiFilters 'armeabi-v7a', 'arm64-v8a' //'x86', 'x86_64', 'armeabi', 'armeabi-v7a', 'arm64-v8a', 'mips', 'mips64'
}
}
The last
Thanks to OpenCV, recently I developed an App sucessfully.