aleyn97 / lpr Goto Github PK

应用可以跑起来，但是识别车牌识别不出来，我看log是说加载System.loadLibrary("opencv_info");这个库找不到

解压失败，model文件损坏、、、

java.lang.NullPointerException: Attempt to invoke virtual method 'void android.view.Display.getRealMetrics(android.util.DisplayMetrics)' on a null object reference
at com.pcl.ocr.scanner.ScannerView.getPreviewRatio(ScannerView.java:138)
at com.pcl.ocr.scanner.ScannerView.initUseCase(ScannerView.java:120)
at com.pcl.ocr.scanner.ScannerView.lambda$initCamera$0$ScannerView(ScannerView.java:100)
at com.pcl.ocr.scanner.-$$Lambda$ScannerView$S9Jc7nAK8ybGVA9Y6euMO_ze54w.run(Unknown Source:4)
at android.os.Handler.handleCallback(Handler.java:907)
at android.os.Handler.dispatchMessage(Handler.java:105)
at android.os.Looper.loop(Looper.java:216)
at android.app.ActivityThread.main(ActivityThread.java:7625)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:524)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:987)

您好！项目我已成功运行，但是目前车牌在扫描框内还是不能识别车牌

    protected void onPostExecute(String str) 

在这个方法回调的str都是null

• 首先感谢大佬的分享，超赞！
• 想请教下，如果要加入闪光灯的需求，该如何操作？
• Ps：普通车牌识别挺准，新能源拍照不太好使...

OpenCV(3.4.6) Error: Unspecified error (FAILED: ReadProtoFromBinaryFile(param_file, param). Failed to parse NetParameter file: /storage/emulated/0/lpr/SegmenationFree-Inception.caffemodel) in void cv::dnn::ReadNetParamsFromBinaryFileOrDie(const char*, opencv_caffe::NetParameter*), file /build/3_4_pack-android/opencv/modules/dnn/src/caffe/caffe_io.cpp, line 1165

本人可提供一手车牌检测和车牌识别商用级别数据集，数据简介见链接：https://www.bilibili.com/video/bv1kU4y1e7Sb

您好！我项目能够成功跑起，但是识别车牌没反应，同时结果也没有，请问一下什么问题

请问我想得到车牌底色的预测结果, 有办法实现吗？

比如蓝牌 黄牌 黑牌 白牌 绿牌

2020-06-09 11:41:04.379 25953-25953/com.pcl.lpr E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.pcl.lpr, PID: 25953
java.lang.NullPointerException: Attempt to invoke virtual method 'void android.view.Display.getRealMetrics(android.util.DisplayMetrics)' on a null object reference
at com.pcl.ocr.scanner.ScannerView.getPreviewRatio(ScannerView.java:138)
at com.pcl.ocr.scanner.ScannerView.initUseCase(ScannerView.java:120)
at com.pcl.ocr.scanner.ScannerView.lambda$initCamera$0$ScannerView(ScannerView.java:100)
at com.pcl.ocr.scanner.-$$Lambda$ScannerView$S9Jc7nAK8ybGVA9Y6euMO_ze54w.run(Unknown Source:4)
at android.os.Handler.handleCallback(Handler.java:914)
at android.os.Handler.dispatchMessage(Handler.java:100)
at android.os.Looper.loop(Looper.java:236)
at android.app.ActivityThread.main(ActivityThread.java:7601)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:539)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:950)

集成到项目里，首次可以正常预览LPRActivity，再次进入预览界面LPRActivity后app崩溃， 在ScannerView里的方法getPreviewRatio 中代码mPreviewView.getDisplay().getRealMetrics(metrics);
getDisplay()为null，这是初始化流程问题吗？需要完全退出app后，再次进入才可以预览，望赐教，谢谢

一直是下面的错误
CMake Error at CMakeLists.txt:20 (find_package):
By not providing "FindOpenCV.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "OpenCV", but
CMake did not find one.
Could not find a package configuration file provided by "OpenCV" with any
of the following names:
OpenCVConfig.cmake
opencv-config.cmake
Add the installation prefix of "OpenCV" to CMAKE_PREFIX_PATH or set
"OpenCV_DIR" to a directory containing one of the above files. If "OpenCV"
provides a separate development package or SDK, be sure it has been
installed.

可提供车牌黄绿蓝数据集q:1041357701

麻烦把camerax替换回原来的版本

我在windows下编译没有通过，能提供编译出来的so库吗，我直接验证一下看看效果可以吗？多谢

flutter也有这个插件，是您开发的吗？

测试发现，只支持Android 10，往下系统都无法识别