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43 lines
1.5 KiB
Python
43 lines
1.5 KiB
Python
import argparse
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import cv2
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import numpy as np
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import sys
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import mxnet as mx
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import datetime
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class Alignment:
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def __init__(self, prefix, epoch, ctx_id=0):
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print('loading',prefix, epoch)
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ctx = mx.gpu(ctx_id)
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sym, arg_params, aux_params = mx.model.load_checkpoint(prefix, epoch)
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all_layers = sym.get_internals()
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sym = all_layers['heatmap_output']
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image_size = (128, 128)
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self.image_size = image_size
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model = mx.mod.Module(symbol=sym, context=ctx, label_names = None)
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#model = mx.mod.Module(symbol=sym, context=ctx)
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model.bind(for_training=False, data_shapes=[('data', (1, 3, image_size[0], image_size[1]))])
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model.set_params(arg_params, aux_params)
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self.model = model
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def get(self, img):
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rimg = cv2.resize(img, (self.image_size[1], self.image_size[0]))
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img = cv2.cvtColor(rimg, cv2.COLOR_BGR2RGB)
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img = np.transpose(img, (2,0,1)) #3*112*112, RGB
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input_blob = np.zeros( (1, 3, self.image_size[1], self.image_size[0]),dtype=np.uint8 )
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input_blob[0] = img
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data = mx.nd.array(input_blob)
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db = mx.io.DataBatch(data=(data,))
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self.model.forward(db, is_train=False)
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alabel = self.model.get_outputs()[-1].asnumpy()[0]
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ret = np.zeros( (alabel.shape[0], 2), dtype=np.float32)
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for i in xrange(alabel.shape[0]):
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a = cv2.resize(alabel[i], (self.image_size[1], self.image_size[0]))
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ind = np.unravel_index(np.argmax(a, axis=None), a.shape)
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#ret[i] = (ind[0], ind[1]) #h, w
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ret[i] = (ind[1], ind[0]) #w, h
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return ret
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