opencv android颜色识别
时间: 2023-12-30 13:24:13 浏览: 155
opencv颜色识别
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在Android中使用OpenCV进行颜色识别的步骤如下:
1. 导入OpenCV库和相关类:
```java
import org.opencv.android.BaseLoaderCallback;
import org.opencv.android.LoaderCallbackInterface;
import org.opencv.android.OpenCVLoader;
import org.opencv.core.Core;
import org.opencv.core.CvType;
import org.opencv.core.Mat;
import org.opencv.core.Scalar;
import org.opencv.core.Size;
import org.opencv.imgproc.Imgproc;
```
2. 初始化OpenCV库:
```java
private BaseLoaderCallback mLoaderCallback = new BaseLoaderCallback(this) {
@Override
public void onManagerConnected(int status) {
switch (status) {
case LoaderCallbackInterface.SUCCESS:
// OpenCV库加载成功
break;
default:
super.onManagerConnected(status);
break;
}
}
};
@Override
protected void onResume() {
super.onResume();
OpenCVLoader.initDebug();
OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_3_4_0, this, mLoaderCallback);
}
```
3. 进行颜色识别:
```java
// 将Bitmap转换为Mat
Mat src = new Mat();
Utils.bitmapToMat(bitmap, src);
// 将图像从RGBA转换为BGR
Imgproc.cvtColor(src, src, Imgproc.COLOR_RGBA2BGR);
// 将图像从BGR转换为HSV
Imgproc.cvtColor(src, src, Imgproc.COLOR_BGR2HSV);
// 设置颜色范围
Scalar lowerBound = new Scalar(iLowH, iLowS, iLowV);
Scalar upperBound = new Scalar(iHighH, iHighS, iHighV);
// 进行颜色过滤
Mat mask = new Mat();
Core.inRange(src, lowerBound, upperBound, mask);
// 显示结果
Bitmap resultBitmap = Bitmap.createBitmap(mask.cols(), mask.rows(), Bitmap.Config.ARGB_8888);
Utils.matToBitmap(mask, resultBitmap);
imageView.setImageBitmap(resultBitmap);
```
请注意,上述代码中的`bitmap`是原始图像的Bitmap对象,`iLowH`、`iHighH`、`iLowS`、`iHighS`、`iLowV`和`iHighV`是颜色范围的阈值。
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