Android识别车牌信息

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gradle

//开源车牌识别安卓SDK库 implementation("com.github.HyperInspire:hyperlpr3-android-sdk:1.0.3") button.setOnClickListener(v -> { Log.d("Test", ""); try (InputStream file = getAssets().open("lp1.jpg")) { Bitmap lpImg = BitmapFactory.decodeStream(file); Bitmap showImg = null; if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) { showImg = Bitmap.createBitmap(lpImg.getWidth(), lpImg.getHeight(), Bitmap.Config.RGB_565, false); } if (showImg != null) { canvas.setBitmap(showImg); // 绘制画笔 Paint paint = new Paint(); paint.setStrokeWidth(2);//设置画笔宽为2 paint.setARGB(255, 255, 0, 0); paint.setStyle(Paint.Style.STROKE); // 绘制画笔到画布上 canvas.drawBitmap(lpImg, 0, 0, new Paint()); Plate[] plates = HyperLPR3.getInstance().plateRecognition(lpImg, HyperLPR3.CAMERA_ROTATION_0, HyperLPR3.STREAM_BGRA); // 自定义字符串内容 StringBuilder builder = new StringBuilder(); for (int i = 0; i < plates.length; i++) { Plate plate = plates[i]; canvas.drawRect(plate.getX1(), plate.getY1(), plate.getX2(), plate.getY2(), paint); builder.append('第').append(i+1).append("车牌").append("\n"); builder.append("车牌内容").append(plate.getCode()).append("\n"); } img.setImageBitmap(showImg); text.setText(builder.toString()); } } catch (IOException e) { Toast.makeText(this, "图像加载失败了", Toast.LENGTH_SHORT).show(); } });