Caffe: Errors in LMDB read and Registering ImageData after adding custom layer

[serimp]

Hi,

After adding a custom layer (called 'Topology' layer, followed https://github.com/BVLC/caffe/wiki/Development ), errors appear in registering the ImageData layer and Data layer, regardless of the fact that the custom layer is included or not included.

• When ImageData layer is used:

Check failed: registry.count(type) == 1 (0 vs. 1) Unknown layer type: ImageData (known types: AbsVal, Accuracy, ArgMax, BNLL, BatchNorm, BatchReindex, Concat, ContrastiveLoss, Convolution, Data, Deconvolution, Dropout, DummyData, Eltwise, Embed, EuclideanLoss, Exp, Filter, Flatten, HDF5Data, HDF5Output, HingeLoss, Im2col, InfogainLoss, InnerProduct, LRN, Log, MVN, MemoryData, MultinomialLogisticLoss, PReLU, Pooling, Power, ReLU, Reduction, Reshape, SPP, Sigmoid, SigmoidCrossEntropyLoss, Silence, Slice, Softmax, SoftmaxWithLoss, Split, TanH, Threshold, Tile, Topology)
* Check failure stack trace: *
@ 0x7f6389e18daa (unknown)
@ 0x7f6389e18ce4 (unknown)
@ 0x7f6389e186e6 (unknown)
@ 0x7f6389e1b687 (unknown)
@ 0x7f638a465ac4 caffe::LayerRegistry<>::CreateLayer()
@ 0x7f638a46bab5 caffe::Net<>::Init()
@ 0x7f638a46dc25 caffe::Net<>::Net()
@ 0x7f638a54a92a caffe::Solver<>::InitTrainNet()
@ 0x7f638a54ba3c caffe::Solver<>::Init()
@ 0x7f638a54bd49 caffe::Solver<>::Solver()
@ 0x7f638a4375c3 caffe::Creator_SGDSolver<>()
@ 0x40e71e caffe::SolverRegistry<>::CreateSolver()
@ 0x40794b train()
@ 0x405841 main
@ 0x7f6389126ec5 (unknown)
@ 0x405f51 (unknown)
@ (nil) (unknown)
./train_image.sh: line 3: 904 Aborted (core dumped)

• When Data layer is used with LMDB:

Unknown database backend
* Check failure stack trace: *
@ 0x7f213f882daa (unknown)
@ 0x7f213f882ce4 (unknown)
@ 0x7f213f8826e6 (unknown)
@ 0x7f213f885687 (unknown)
@ 0x7f213fe8f060 caffe::db::GetDB()
@ 0x7f213ffbd25c caffe::DataReader::Body::InternalThreadEntry()
@ 0x7f213fe678e0 caffe::InternalThread::entry()
@ 0x7f2138771a4a (unknown)
@ 0x7f2134f78182 start_thread
@ 0x7f213ec6947d (unknown)
@ (nil) (unknown)
./train_topology.sh: line 5: 2448 Aborted

[serimp]

Resolved after setting OPENCV, LMDB flag back to 1 and recompiling.

[wolfbill]

Hi serimp,tell me more about how to solve the problem

[vishalkumarchaudhary]

There is no need to set LMBD flag for this problem .
Only set this OPENCV :=3