In face recognition, I want to serialize the face models and store it in a file, then when an image with a face is provided, I create its model and search it among the deserialized models. Below is the serialize/deserialize function pair I've wrote:

const long buffSize = 100000;
void SerializeModelsFromImages(const char *refPathName, PXCImage *images[], int num){
 ofstream outputfile(refPathName, ofstream::binary);
 for(int i = 0; i < num; ++i){
   PXCFaceAnalysis::Recognition::Model * model = createModelFromImage(images[i]);
   pxcBYTE *buffer = new pxcBYTE[buffSize];
   model->Serialize(buffer);
   outputfile.write((const char*)buffer, buffSize);
 }
 outputfile.close();
}
vector<PXCFaceAnalysis::Recognition::Model *> DeserializeReferenceModels(const char* refPathName, int &sizeRefArray){ vector<PXCFaceAnalysis::Recognition::Model*> refModels; 
 ifstream inputfile(refPathName, ifstream::binary);
 long size;
 char *buffer = new char[buffSize];
 inputfile.seekg(0, ifstream::end);
 size = inputfile.tellg();
 sizeRefArray = size / buffSize;
 inputfile.seekg(0, ifstream::beg);
 for(int i = 0; i < sizeRefArray; ++i){
   inputfile.read(buffer, buffSize);
   PXCFaceAnalysis::Recognition::Model *ref;
   faceAnalyzer->DynamicCast<PXCFaceAnalysis::Recognition>()->DeserializeModel((pxcBYTE*)buffer, &ref);
   refModels.push_back(ref);
 } 
 return refModels;
}
pxcU32 FaceRecognition(vector<PXCFaceAnalysis::Recognition::Model *> refModelsArray, PXCImage* image){
 PXCFaceAnalysis::Recognition::Model *cur = createModelFromImage(image);
 pxcU32 index;
 int sizeRefArray = refModelsArray.size();
 PXCFaceAnalysis::Recognition::Model ** refModels = new PXCFaceAnalysis::Recognition::Model*[sizeRefArray];
 for(int i = 0; i < sizeRefArray; ++i)
   refModels[i] = refModelsArray[i];
 if(cur->Compare(refModels, sizeRefArray, 0, &index) >= PXC_STATUS_NO_ERROR)
   return index;
}

my question:

The serialize and deserialize function seems works ok, but when calling FaceRecognition function it encounters some problem in the underlined line---"if(cur->Compare(refModels, sizeRefArray, 0, &index) >= PXC_STATUS_NO_ERROR)" with memory access violation. I've check the parameter in Compare, they are not NULL or invalid.

Is the probem to do with char * buffer and pxcBYTE*  buffer that makes deserialize process works wrong? or something else? Thanks very much!