How to read Datum in LMDB using Python

[Hiroshi Kuwajima]

For debug purpose, I would like to examine actual images in LMDB which are used for training. Does anyone know how to get images (in datum objects) in a given LMDB, in the same order of Caffe training, using Python?

[Axel Angel]

You should search before asking a common question. You can find Python scripts that does what you want, you can take a look:

https://groups.google.com/d/msg/caffe-users/6OOcM-XfvOI/Cs5VVdfDubEJ

You can show "image" with matplotlib.pyplot.imshow.

[Hiroshi Kuwajima]

Thank you Alex, the following code in your past answer is what I want.

        datum = caffe.proto.caffe_pb2.Datum()

        datum.ParseFromString(value)

        label = int(datum.label)

        image = caffe.io.datum_to_array(datum)

        image = image.astype(np.uint8)

> You should search before asking a common question.

Sorry, I couldn't find your answer by myself.

[Steven]

Hiroshi - Thanks. I had the same question you did, and this was the thread I found.