ncnn_android_yolov9YOLOv9 是一个基于 QT 的 NCNN 实现，用于安卓端部署。它使用 OpenCV 和 NDK 进行开发，支持 Android 平台。该库提供了丰富的功能，如图像预处理、特征提取、目标检测等。

在安卓端部署时，需要将 ncnn_android_yolov9YOLOv9 库添加到项目的依赖中。首先，在 AndroidManifest.xml 文件中添加以下代码：

    ...

然后，在 build.gradle 文件中添加以下代码：

dependencies {

    implementation "org.opencv.android:opencv-java:4.5.1.2"

    implementation "org.opencv:opencv-core:4.5.1.2"

    implementation "org.opencv:opencv-imgproc:4.5.1.2"

    implementation "org.opencv:opencv-objdetect:4.5.1.2"

    implementation "org.opencv:opencv-features2d:4.5.1.2"

    implementation "org.opencv:opencv-highgui:4.5.1.2"

    implementation "org.opencv:opencv-video:4.5.1.2"

}

接下来，需要在项目中创建一个新的文件夹，例如 `ncnnn_android`，并在其中创建一个名为 `yolov9YOLOv9` 的文件夹。在这个文件夹中，放置 ncnn_android_yolov9YOLOv9 库的源代码文件。

最后，在项目的主函数中添加以下代码：

```java
import org.opencv.android.OpenCVLoader;
import org.opencv.android.Utils;
import org.opencv.android.NativeWrapper;
import org.opencv.android.NativeWrapper.NativeWrapperListener;
import org.opencv.android.CvCameraView;
import org.opencv.android.CvCameraView.CameraDeviceInfo;
import org.opencv.android.CvCameraView.CameraDeviceInfo.Builder;
import org.opencv.android.CvCameraView.CameraDeviceInfo.Builder;
import org.opencv.android.CvCameraView.CameraDeviceInfo.Builder;
import org.opencv.android.CvCameraView.CameraDeviceInfo.Builder;
import org.opencv.android.CvCameraView.CameraDeviceInfo.Builder;
import org.opencv.android.CvCameraView.CameraDeviceInfo.Builder;
import org.opencv.android.CvCameraView.CameraDeviceInfo.Builder;
import org.opencv.android.CvCameraView.CameraDeviceInfo.Builder;
import org.opencv.android.CvCameraView.CameraDeviceInfo.Builder;
import org.opencv.android.CvCameraView.CameraDeviceInfo.Builder;
import org.opencv.android.CvCameraView.CameraDeviceInfo.Builder;
import org.opencv.android.CvCameraView.CameraDeviceInfo.Builder;
import org.opencv.android.CvCameraView.CameraDeviceInfo.Builder;
import org.opencv.android.CvCameraView.CameraDeviceInfo.Builder;
import org.opencv.android.CvCameraView.CameraDeviceInfo.Builder;
import org.opencv.android.CvCameraView.CameraDeviceInfo.Builder;
import org.opencv.android.CvCameraView.CameraDeviceInfo.Builder;
import org.opencv.android.CvCameraView.CameraDeviceInfo.Builder;
import org.opencv.android.CvCameraView.CameraDeviceInfo.Builder;
import org.opencv.android.CvCameraView.CameraDeviceInfo.Builder;
import org.opencv.android.CvCameraView.CameraDeviceInfo.Builder;
import org.opencv.android.CvCameraView.CameraDeviceInfo.Builder;
import org.opencv.android.CvCameraView.CameraDeviceInfo.Builder;
import org.opencv.android.CvCameraView.CameraDeviceInfo.Builder;
import org.opencv.android.CvCameraView.CameraDeviceInfo.Builder;
import org.opencv.android.CvCameraView.CameraDeviceInfo.Builder;
import org.opencv.android.CvCameraView.CameraDeviceInfo.Builder;
import org.opencv.android.CvCameraView.CameraDeviceInfo.Builder;
import org.opencv.android.CvCameraView.CameraDeviceInfo.Builder;
import org.opencv.android.CvCameraView.CameraDeviceInfo.Builder;
import org.opencv.android.CvCameraView.CameraDeviceInfo.Builder;
import org.opencv.android.CvCameraView.CameraDeviceInfo.Builder;
import org.opencv.android.CvCameraView.CameraDeviceInfo.Builder;
import org.opencv.android.CvCameraView.CameraDeviceInfo.Builder;
import org.opencv.android.CvCameraView.CameraDeviceInfo.Builder;
import org.opencvYOLOv9 QT+NCNN实现安卓端部署