buongiorno, il nostro comune è subentrato in ANPR da dicembre 2017.
Vorrei proporre, se non è già in progetto, la creazione di un manuale per la risoluzione di alcune problematiche che noi tutti ci troviamo ad affrontare (risoluzione disallineamenti codici fiscali, ecc.) che potrebbe essere utile per tutti i colleghi.
2 Mi Piace
Ciao @Andrea_Tironi1 in generale noi stiamo cercando di trasferire tutta la documentazione su http://docs.anpr.it
Ottimo grazie dell’informazione.
Andrea
Forse posso fornire il codice sorgente per aiutarti a creare un sistema ANPR.
import android.app.Activity;
import android.content.ContentValues;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.support.v7.app.AppCompatActivity;
import android.text.format.DateFormat;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.Toast;
import com.openalpr.api.DefaultApi;
import com.openalpr.api.invoker.ApiException;
import com.openalpr.api.models.InlineResponse200;
import com.yalantis.ucrop.UCrop;
import com.yalantis.ucrop.UCropActivity;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.Calendar;
import java.util.Locale;
public class MainActivity extends AppCompatActivity {
private final DefaultApi api = new DefaultApi();
private static final String TAG = "MainActivity";
Button reconize,select;
TextView result,plate;
ImageView showImage;
Spinner spinner;
String secretKey = "sk_960d6f4c62d1c20452c7613e";
String url = "https://qnwww2.autoimg.cn/youchuang/g6/M0A/FA/29/autohomecar__wKgH3FkZCr-AFH7zAAFPFgtP6pc751.jpg?imageView2/2/w/752|watermark/2/text/TEkzMw0K5rG96L2m5LmL5a62/font/5b6u6L2v6ZuF6buR/fontsize/270/fill/d2hpdGU=/dissolve/100/gravity/SouthEast/dx/5/dy/5";
File cameraFile,cropFile;
private boolean isFromfile = false;
String country = "us";
final Integer recognizeVehicle = 0;
final String state = "";
final Integer returnImage = 1;
final Integer topn = 10;
final String prewarp = "";
private String cropPath = "";
String[] countrys ;
String[] countryCodes ;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
reconize = (Button) findViewById(R.id.reconize);
select = (Button) findViewById(R.id.selectImage);
result = (TextView) findViewById(R.id.result);
showImage = (ImageView) findViewById(R.id.imageShow);
plate = (TextView) findViewById(R.id.plate);
spinner = (Spinner) findViewById(R.id.spinner);
// GlideUtils.setUrlImage(this,url,showImage);
countrys = getResources().getStringArray(R.array.countrys);
countryCodes = getResources().getStringArray(R.array.country_codes);
select.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String filename = DateFormat.format("yyyyMMdd_hhmmss", Calendar.getInstance(Locale.CHINA)) + ".jpg";
cameraFile = new File(Environment.getExternalStorageDirectory() + "/Pictures/Camera/" + filename);
if(!cameraFile.exists()){
try {
cameraFile.createNewFile();
} catch (IOException e) {
e.printStackTrace();
}
}
Intent intent0 = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if (Build.VERSION.SDK_INT < 24) {
intent0 = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
intent0.putExtra("android.intent.extras.CAMERA_FACING", 0);
intent0.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(cameraFile));
} else {
ContentValues contentValues = new ContentValues(1);
intent0.putExtra("android.intent.extras.CAMERA_FACING", 0);
contentValues.put(MediaStore.Images.Media.DATA, cameraFile.getAbsolutePath());
Uri uri = MainActivity.this.getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, contentValues);
intent0.putExtra(MediaStore.EXTRA_OUTPUT, uri);
}
isFromfile = true;
startActivityForResult(intent0, 200);
}
});
reconize.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
result.setText("正在识别。。。。。");
plate.setText("");
try {
new Thread(){
@Override
public void run() {
super.run();
InlineResponse200 response = null;
try {
if(isFromfile){
response = api.recognizeFile(cropFile, secretKey, country, recognizeVehicle, state, returnImage, topn, prewarp);
}else {
response = api.recognizeUrl(url, secretKey, country, recognizeVehicle, state, returnImage, topn, prewarp);
}
} catch (ApiException e) {
e.printStackTrace();
}
final InlineResponse200 finalResponse = response;
runOnUiThread(new Runnable() {
@Override
public void run() {
if(finalResponse == null){
Toast.makeText(MainActivity.this, "识别失败", Toast.LENGTH_SHORT).show();
return;
}
Toast.makeText(MainActivity.this, "识别成功", Toast.LENGTH_SHORT).show();
if(finalResponse.getResults()!=null && finalResponse.getResults().size()>=1)
plate.setText("车牌号："+finalResponse.getResults().get(0).getPlate());
result.setText("返回结果:"+finalResponse.toString());
}
});
}
}.start();
} catch (Exception e) {
e.printStackTrace();
}
}
});
ArrayAdapter<String> product_adapter = new ArrayAdapter<String>(this, android.R.layout.select_dialog_singlechoice, countrys);
spinner.setAdapter(product_adapter);
spinner.setSelection(12);
spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
country = countryCodes[position];
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(resultCode != RESULT_OK){
return;
}
switch (requestCode) {
case 200:
if (!cameraFile.exists()) {
return ;
}
Bitmap bitmap = null;
if (resultCode== Activity.RESULT_OK){
try {
FileInputStream fis = new FileInputStream(cameraFile);
bitmap = BitmapFactory.decodeStream(fis);
fis.close();
} catch (Exception e) {
e.printStackTrace();
}
if (bitmap!=null) {
showImage.setImageBitmap(bitmap);
}
cropPath = startUCrop(this,cameraFile.getPath(),UCrop.REQUEST_CROP,16,9);
}
break;
case UCrop.REQUEST_CROP:
final Uri resultUri = UCrop.getOutput(data);
showImage.setImageURI(resultUri);
cropFile = new File(cropPath);
break;
default:
break;
}
}
/**
* 启动裁剪
* @param activity 上下文
* @param sourceFilePath 需要裁剪图片的绝对路径
* @param requestCode 比如：UCrop.REQUEST_CROP
* @param aspectRatioX 裁剪图片宽高比
* @param aspectRatioY 裁剪图片宽高比
* @return
*/
public static String startUCrop(Activity activity, String sourceFilePath,
int requestCode, float aspectRatioX, float aspectRatioY) {
Uri sourceUri = Uri.fromFile(new File(sourceFilePath));
File outDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
if (!outDir.exists()) {
outDir.mkdirs();
}
File outFile = new File(outDir, System.currentTimeMillis() + ".jpg");
//裁剪后图片的绝对路径
String cameraScalePath = outFile.getAbsolutePath();
Uri destinationUri = Uri.fromFile(outFile);
//初始化，第一个参数：需要裁剪的图片；第二个参数：裁剪后图片
UCrop uCrop = UCrop.of(sourceUri, destinationUri);
//初始化UCrop配置
UCrop.Options options = new UCrop.Options();
//设置裁剪图片可操作的手势
options.setAllowedGestures(UCropActivity.SCALE, UCropActivity.ROTATE, UCropActivity.ALL);
//是否隐藏底部容器，默认显示
options.setHideBottomControls(true);
// //设置toolbar颜色
// options.setToolbarColor(ActivityCompat.getColor(activity, R.color.colorPrimary));
// //设置状态栏颜色
// options.setStatusBarColor(ActivityCompat.getColor(activity, R.color.colorPrimary));
//是否能调整裁剪框
options.setFreeStyleCropEnabled(true);
//UCrop配置
uCrop.withOptions(options);
//设置裁剪图片的宽高比，比如16：9
uCrop.withAspectRatio(aspectRatioX, aspectRatioY);
//uCrop.useSourceImageAspectRatio();
//跳转裁剪页面
uCrop.start(activity, requestCode);
return cameraScalePath;
}
}
è stato utilizzato in un progetto . https://www.sztigerwong.com/page/alpr.html