NVIDIA/DALI

help, how to decode png byte numpy array that with shape [batch, length, image_byte]

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#4.017 aberto em 28 de jun. de 2022

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external sourcehelp wanted

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Description

Hello, I am currently try to use external source method to read videos that are stored as a sequence of image frames (fixed length). However, it looks like the fn.decoders.image function only allows to decode data with shape [batch, image_byte]. Is there any way that I can modify the shape from [batch, length, image_byte] to [batch * length, image_byte] in define_graph section? Currently I cannot modify the ExternalSourceIterator class so I can only obtain png byte numpy array that with shape [batch, length, image_byte] and then I cannot find way to reshape data in nvidia.dali.pipeline.DataNode in define_graph function

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