Java opencvjna&；C++；FaceRecognizer导致JVM崩溃

我一直在编写FaceRecognitor库的Java版本。我可以在Java OpenCV项目中成功初始化一个新的FaceRecognitor（默认为Fisherface）。我使用JNA来实现这一点。但最近，我发现“train”方法有缺陷，所以我决定在DLL文件中进行整个识别，最后返回一个双精度值。但是当我做了一个新的人脸识别器，像这样：

Ptr<FaceRecognizer> model = Algorithm::create<FaceRecognizer>("FaceRecognizer.Fisherfaces");

（libList是向量，idList是向量）

JVM（通过JNA到我的Java OpenCV项目）

它说：

A fatal error has been detected by the Java Runtime Environment:

EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x60b2510b, pid=31264, tid=13256

Problematic frame:
C  [opencv_core248.dll+0x510b]

我猜这与引用或指针有关，因为即使我运行

model->name();

它也崩溃了。这似乎是“模型”的问题。 我真的很感激你的帮助！多谢各位

这是记录的文件：

---------------  T H R E A D  ---------------

Current thread (0x0008bc00):  JavaThread "main" [_thread_in_native, id=13256,     stack(0x01070000,0x010c0000)]

siginfo: ExceptionCode=0xc0000005, reading address 0x00000000

Registers:
EAX=0x010bf098, EBX=0x00000000, ECX=0x00000000, EDX=0x08da0174
ESP=0x010bf08c, EBP=0x010bf0a4, ESI=0x010bf0b0, EDI=0x010bf3e4
EIP=0x60b2510b, EFLAGS=0x00010286

Top of Stack: (sp=0x010bf08c)
0x010bf08c:   bdaf0099 010bf0b0 00000000 010bf3e4
0x010bf09c:   60c941e9 ffffffff 010bf3f0 61e42598
0x010bf0ac:   010bf198 bdac87d8 010bf490 00000000
0x010bf0bc:   00000000 010bf148 010bf148 010bf120
0x010bf0cc:   010bf120 cccccccc 00000000 cccccccc
0x010bf0dc:   cccccccc 42ff0000 00000000 00000000
0x010bf0ec:   00000000 00000000 00000000 00000000
0x010bf0fc:   00000000 00000000 00000000 010bf0e8 

Instructions: (pc=0x60b2510b)
0x60b250eb:   a1 00 00 00 00 50 51 56 a1 e0 37 d1 60 33 c5 50
0x60b250fb:   8d 45 f4 64 a3 00 00 00 00 c7 45 f0 00 00 00 00
0x60b2510b:   8b 01 8b 75 08 8b 50 0c 56 ff d2 8b c8 e8 e3 f7
0x60b2511b:   ff ff c7 45 fc 00 00 00 00 c7 45 f0 01 00 00 00 


Register to memory mapping:

EAX=0x010bf098 is pointing into the stack for thread: 0x0008bc00
EBX=0x00000000 is an unknown value
ECX=0x00000000 is an unknown value
EDX=0x08da0174 is an unknown value
ESP=0x010bf08c is pointing into the stack for thread: 0x0008bc00
EBP=0x010bf0a4 is pointing into the stack for thread: 0x0008bc00
ESI=0x010bf0b0 is pointing into the stack for thread: 0x0008bc00
EDI=0x010bf3e4 is pointing into the stack for thread: 0x0008bc00

---

我把它修好了！是的，“createFisherFaceRecognizer（）”有问题，因为它是从“cv.hpp”派生的。它显示在VisualStudio的IntelliSnse中，因为它来自类Cv，但我没有导入正确的库。我在每个opencv.lib文件的末尾添加了一个“d”，还导入了cvcore和cvcorex。现在它起作用了。如果你有像我这样的问题，很可能就是这样。完成后，我会很高兴地与大家分享我的代码。

什么是：

Ptr

？如果它持有指向某个分配的指针，并且在函数返回时被销毁（如

std:：unique_ptr

），则访问冲突就发生在这里。您能显示整个日志文件吗？也很高兴看到JNI代码（将数据传递到java端的代码）。是的，请显示JNI包装器方法。我将在完成项目后在我的博客上共享它，但我需要帮助。我发现内存地址已生成，但内存地址的值为空。另外，当我要求算法“getList”时，它也崩溃了。任何调用指针或引用的操作都会崩溃，让我觉得这是“createFisherFaceRecognizer（）”问题。我想这是因为我可能错过了导入。你的想法？不，不是在你的博客上。在这里

model->name();

---------------  T H R E A D  ---------------

Current thread (0x0008bc00):  JavaThread "main" [_thread_in_native, id=13256,     stack(0x01070000,0x010c0000)]

siginfo: ExceptionCode=0xc0000005, reading address 0x00000000

Registers:
EAX=0x010bf098, EBX=0x00000000, ECX=0x00000000, EDX=0x08da0174
ESP=0x010bf08c, EBP=0x010bf0a4, ESI=0x010bf0b0, EDI=0x010bf3e4
EIP=0x60b2510b, EFLAGS=0x00010286

Top of Stack: (sp=0x010bf08c)
0x010bf08c:   bdaf0099 010bf0b0 00000000 010bf3e4
0x010bf09c:   60c941e9 ffffffff 010bf3f0 61e42598
0x010bf0ac:   010bf198 bdac87d8 010bf490 00000000
0x010bf0bc:   00000000 010bf148 010bf148 010bf120
0x010bf0cc:   010bf120 cccccccc 00000000 cccccccc
0x010bf0dc:   cccccccc 42ff0000 00000000 00000000
0x010bf0ec:   00000000 00000000 00000000 00000000
0x010bf0fc:   00000000 00000000 00000000 010bf0e8 

Instructions: (pc=0x60b2510b)
0x60b250eb:   a1 00 00 00 00 50 51 56 a1 e0 37 d1 60 33 c5 50
0x60b250fb:   8d 45 f4 64 a3 00 00 00 00 c7 45 f0 00 00 00 00
0x60b2510b:   8b 01 8b 75 08 8b 50 0c 56 ff d2 8b c8 e8 e3 f7
0x60b2511b:   ff ff c7 45 fc 00 00 00 00 c7 45 f0 01 00 00 00 


Register to memory mapping:

EAX=0x010bf098 is pointing into the stack for thread: 0x0008bc00
EBX=0x00000000 is an unknown value
ECX=0x00000000 is an unknown value
EDX=0x08da0174 is an unknown value
ESP=0x010bf08c is pointing into the stack for thread: 0x0008bc00
EBP=0x010bf0a4 is pointing into the stack for thread: 0x0008bc00
ESI=0x010bf0b0 is pointing into the stack for thread: 0x0008bc00
EDI=0x010bf3e4 is pointing into the stack for thread: 0x0008bc00