Convert numpy.float32 type to python built-in float type #1462
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Motivation
When I follow the documentation to convert the psenet model to torchserve model and start the torchserve service, the predicted image will receive a 503 error. The reason is that the float32 type of numpy will throw an exception during serialization, and the confidence type in the result predicted by pse is numpy.float32
Modification
Convert the confidence type in the PSE post-processing file from numpy.float32 to python built-in float
