1, 下载并解压 javaCV 1.2

下载选项

解压下载文件, 内容如下图

2.png

2, 打开Android Studio 新建项目.

3, 将以下包拷贝到"\TestJavaCV\app\libs"文件夹下.

3.png

4, 在app上按"F4"打开 Project Structure 页面.

4.1 选择 Dependencies , 如下图.

4.png

4.2 点击右侧 "+",选择"2 File Dependency". 将刚才拷贝的".jar"文件添加进去.

5.png

5, 在"app/build.gradle"中添加如下代码

android {

//Exclude duplicates

packagingOptions {

exclude 'META-INF/services/javax.annotation.processing.Processor'

pickFirst 'META-INF/maven/org.bytedeco.javacpp-presets/opencv/pom.properties'

pickFirst 'META-INF/maven/org.bytedeco.javacpp-presets/opencv/pom.xml'

pickFirst 'META-INF/maven/org.bytedeco.javacpp-presets/ffmpeg/pom.properties'

pickFirst 'META-INF/maven/org.bytedeco.javacpp-presets/ffmpeg/pom.xml'

}

}

6.png

注意 : 如果不添加上面的代码会出现一下错误

错误信息

5, 测试程序

package com.wsj.custemview.testjavacv;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.graphics.drawable.BitmapDrawable;

import android.graphics.drawable.Drawable;

import android.os.Bundle;

import android.support.v7.app.AppCompatActivity;

import android.widget.ImageView;

import org.bytedeco.javacpp.opencv_core;

import org.bytedeco.javacpp.opencv_core.IplImage;

// 静态成员变量必须 static导入.

import static org.bytedeco.javacpp.opencv_core.IPL_DEPTH_8U;

import static org.bytedeco.javacpp.opencv_core.cvFlip;

public class MainActivity extends AppCompatActivity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

ImageView imageView = (ImageView) findViewById(R.id.img1);

// Drawable drawable = idToDrawable(R.mipmap.ic_launcher);

// Bitmap bitmap = this.drawableToBitmap(drawable);

Bitmap bitmap = BitmapFactory.decodeResource(getResources(),R.mipmap.ic_launcher);

IplImage iplImage = this.bitmapToIplImage(bitmap);

cvFlip(iplImage,iplImage,0);

bitmap = this.IplImageToBitmap(iplImage);

imageView.setImageBitmap(bitmap);

}

/**

* IplImage转化为Bitmap

* @param iplImage

* @return

*/

public Bitmap IplImageToBitmap(opencv_core.IplImage iplImage) {

Bitmap bitmap = null;

bitmap = Bitmap.createBitmap(iplImage.width(), iplImage.height(),

Bitmap.Config.ARGB_8888);

bitmap.copyPixelsFromBuffer(iplImage.getByteBuffer());

return bitmap;

}

/**

* Bitmap转化为IplImage

* @param bitmap

* @return

*/

public opencv_core.IplImage bitmapToIplImage(Bitmap bitmap) {

opencv_core.IplImage iplImage;

iplImage = IplImage.create(bitmap.getWidth(), bitmap.getHeight(),

IPL_DEPTH_8U, 4);

bitmap.copyPixelsToBuffer(iplImage.getByteBuffer());

return iplImage;

}

/**

* 将资源ID转化为Drawable

* @param id

* @return

*/

public Drawable idToDrawable(int id) {

return this.getResources().getDrawable(id);

}

/**

* 将Drawable转化为Bitmap

* @param drawable

* @return

*/

public Bitmap drawableToBitmap(Drawable drawable) {

if(drawable == null)

return null;

return ((BitmapDrawable)drawable).getBitmap();

}

}