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436 lines
21 KiB
Python
436 lines
21 KiB
Python
from __future__ import absolute_import
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from __future__ import division
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from __future__ import print_function
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import mxnet as mx
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import numpy as np
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from config import config
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ACT_BIT = 1
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bn_mom = 0.9
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workspace = 256
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memonger = False
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def Conv(**kwargs):
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body = mx.sym.Convolution(**kwargs)
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return body
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def Act(data, act_type, name):
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if act_type=='prelu':
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body = mx.sym.LeakyReLU(data = data, act_type='prelu', name = name)
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else:
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body = mx.symbol.Activation(data=data, act_type=act_type, name=name)
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return body
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#def lin(data, num_filter, workspace, name, binarize, dcn):
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# bit = 1
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# if not binarize:
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# if not dcn:
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# conv1 = Conv(data=data, num_filter=num_filter, kernel=(1,1), stride=(1,1), pad=(0,0),
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# no_bias=True, workspace=workspace, name=name + '_conv')
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# bn1 = mx.sym.BatchNorm(data=conv1, fix_gamma=False, momentum=bn_mom, eps=2e-5, name=name + '_bn')
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# act1 = Act(data=bn1, act_type='relu', name=name + '_relu')
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# return act1
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# else:
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# bn1 = mx.sym.BatchNorm(data=data, fix_gamma=False, momentum=bn_mom, eps=2e-5, name=name + '_bn')
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# act1 = Act(data=bn1, act_type='relu', name=name + '_relu')
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# conv1_offset = mx.symbol.Convolution(name=name+'_conv_offset', data = act1,
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# num_filter=18, pad=(1, 1), kernel=(3, 3), stride=(1, 1))
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# conv1 = mx.contrib.symbol.DeformableConvolution(name=name+"_conv", data=act1, offset=conv1_offset,
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# num_filter=num_filter, pad=(1,1), kernel=(3, 3), num_deformable_group=1, stride=(1, 1), dilate=(1, 1), no_bias=False)
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# #conv1 = Conv(data=act1, num_filter=num_filter, kernel=(3,3), stride=(1,1), pad=(1,1),
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# # no_bias=False, workspace=workspace, name=name + '_conv')
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# return conv1
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# else:
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# bn1 = mx.sym.BatchNorm(data=data, fix_gamma=False, momentum=bn_mom, eps=2e-5, name=name + '_bn')
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# act1 = Act(data=bn1, act_type='relu', name=name + '_relu')
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# conv1 = mx.sym.QConvolution_v1(data=act1, num_filter=num_filter, kernel=(1,1), stride=(1,1), pad=(0,0),
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# no_bias=True, workspace=workspace, name=name + '_conv', act_bit=ACT_BIT, weight_bit=bit)
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# conv1 = mx.sym.BatchNorm(data=conv1, fix_gamma=False, momentum=bn_mom, eps=2e-5, name=name + '_bn2')
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# return conv1
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def lin3(data, num_filter, workspace, name, k, g=1, d=1):
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if k!=3:
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conv1 = Conv(data=data, num_filter=num_filter, kernel=(k,k), stride=(1,1), pad=((k-1)//2,(k-1)//2), num_group=g,
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no_bias=True, workspace=workspace, name=name + '_conv')
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else:
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conv1 = Conv(data=data, num_filter=num_filter, kernel=(k,k), stride=(1,1), pad=(d,d), num_group=g, dilate=(d, d),
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no_bias=True, workspace=workspace, name=name + '_conv')
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bn1 = mx.sym.BatchNorm(data=conv1, fix_gamma=False, momentum=bn_mom, eps=2e-5, name=name + '_bn')
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act1 = Act(data=bn1, act_type='relu', name=name + '_relu')
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ret = act1
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return ret
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def ConvFactory(data, num_filter, kernel, stride=(1, 1), pad=(0, 0), act_type="relu", mirror_attr={}, with_act=True, dcn=False, name=''):
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if not dcn:
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conv = mx.symbol.Convolution(
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data=data, num_filter=num_filter, kernel=kernel, stride=stride, pad=pad, no_bias=True, workspace=workspace, name=name+'_conv')
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else:
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conv_offset = mx.symbol.Convolution(name=name+'_conv_offset', data = data,
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num_filter=18, pad=(1, 1), kernel=(3, 3), stride=(1, 1))
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conv = mx.contrib.symbol.DeformableConvolution(name=name+"_conv", data=data, offset=conv_offset,
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num_filter=num_filter, pad=(1,1), kernel=(3,3), num_deformable_group=1, stride=stride, dilate=(1, 1), no_bias=False)
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bn = mx.symbol.BatchNorm(data=conv, fix_gamma=False, momentum=bn_mom, eps=2e-5, name=name+'_bn')
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if with_act:
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act = Act(bn, act_type, name=name+'_relu')
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#act = mx.symbol.Activation(
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# data=bn, act_type=act_type, attr=mirror_attr, name=name+'_relu')
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return act
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else:
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return bn
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class CAB:
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def __init__(self, data, nFilters, nModules, n, workspace, name, dilate, group):
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self.data = data
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self.nFilters = nFilters
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self.nModules = nModules
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self.n = n
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self.workspace = workspace
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self.name = name
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self.dilate = dilate
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self.group = group
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self.sym_map = {}
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def get_output(self, w, h):
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key = (w, h)
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if key in self.sym_map:
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return self.sym_map[key]
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ret = None
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if h==self.n:
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if w==self.n:
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ret = (self.data, self.nFilters)
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else:
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x = self.get_output(w+1, h)
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f = int(x[1]*0.5)
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if w!=self.n-1:
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body = lin3(x[0], f, self.workspace, "%s_w%d_h%d_1"%(self.name, w, h), 3, self.group, 1)
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else:
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body = lin3(x[0], f, self.workspace, "%s_w%d_h%d_1"%(self.name, w, h), 3, self.group, self.dilate)
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ret = (body,f)
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else:
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x = self.get_output(w+1, h+1)
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y = self.get_output(w, h+1)
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if h%2==1 and h!=w:
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xbody = lin3(x[0], x[1], self.workspace, "%s_w%d_h%d_2"%(self.name, w, h), 3, x[1])
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#xbody = xbody+x[0]
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else:
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xbody = x[0]
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#xbody = x[0]
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#xbody = lin3(x[0], x[1], self.workspace, "%s_w%d_h%d_2"%(self.name, w, h), 3, x[1])
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if w==0:
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ybody = lin3(y[0], y[1], self.workspace, "%s_w%d_h%d_3"%(self.name, w, h), 3, self.group)
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else:
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ybody = y[0]
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ybody = mx.sym.concat(y[0], ybody, dim=1)
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body = mx.sym.add_n(xbody,ybody, name="%s_w%d_h%d_add"%(self.name, w, h))
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body = body/2
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ret = (body, x[1])
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self.sym_map[key] = ret
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return ret
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def get(self):
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return self.get_output(1, 1)[0]
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def conv_resnet(data, num_filter, stride, dim_match, name, binarize, dcn, dilate, **kwargs):
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bit = 1
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#print('in unit2')
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# the same as https://github.com/facebook/fb.resnet.torch#notes, a bit difference with origin paper
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bn1 = mx.sym.BatchNorm(data=data, fix_gamma=False, eps=2e-5, momentum=bn_mom, name=name + '_bn1')
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act1 = Act(data=bn1, act_type='relu', name=name + '_relu1')
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conv1 = Conv(data=act1, num_filter=int(num_filter*0.5), kernel=(1,1), stride=(1,1), pad=(0,0),
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no_bias=True, workspace=workspace, name=name + '_conv1')
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bn2 = mx.sym.BatchNorm(data=conv1, fix_gamma=False, eps=2e-5, momentum=bn_mom, name=name + '_bn2')
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act2 = Act(data=bn2, act_type='relu', name=name + '_relu2')
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conv2 = Conv(data=act2, num_filter=int(num_filter*0.5), kernel=(3,3), stride=(1,1), pad=(1,1),
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no_bias=True, workspace=workspace, name=name + '_conv2')
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bn3 = mx.sym.BatchNorm(data=conv2, fix_gamma=False, eps=2e-5, momentum=bn_mom, name=name + '_bn3')
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act3 = Act(data=bn3, act_type='relu', name=name + '_relu3')
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conv3 = Conv(data=act3, num_filter=num_filter, kernel=(1,1), stride=(1,1), pad=(0,0), no_bias=True,
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workspace=workspace, name=name + '_conv3')
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#if binarize:
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# conv3 = mx.sym.BatchNorm(data=conv3, fix_gamma=False, eps=2e-5, momentum=bn_mom, name=name + '_bn4')
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if dim_match:
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shortcut = data
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else:
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shortcut = Conv(data=act1, num_filter=num_filter, kernel=(1,1), stride=stride, no_bias=True,
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workspace=workspace, name=name+'_sc')
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if memonger:
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shortcut._set_attr(mirror_stage='True')
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return conv3 + shortcut
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def conv_prnet(data, num_filter, stride, dim_match, name, binarize, dcn, dilate, **kwargs):
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#print('in unit2')
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# the same as https://github.com/facebook/fb.resnet.torch#notes, a bit difference with origin paper
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bn1 = mx.sym.BatchNorm(data=data, fix_gamma=False, eps=2e-5, momentum=bn_mom, name=name + '_bn1')
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act1 = Act(data=bn1, act_type='relu', name=name + '_relu1')
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conv1 = Conv(data=act1, num_filter=int(num_filter*0.5), kernel=(1,1), stride=(1,1), pad=(0,0),
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no_bias=True, workspace=workspace, name=name + '_conv1')
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bn2 = mx.sym.BatchNorm(data=conv1, fix_gamma=False, eps=2e-5, momentum=bn_mom, name=name + '_bn2')
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act2 = Act(data=bn2, act_type='relu', name=name + '_relu2')
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conv2 = Conv(data=act2, num_filter=int(num_filter*0.5), kernel=(3,3), stride=(1,1), pad=(1,1),
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no_bias=True, workspace=workspace, name=name + '_conv2')
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bn3 = mx.sym.BatchNorm(data=conv2, fix_gamma=False, eps=2e-5, momentum=bn_mom, name=name + '_bn3')
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act3 = Act(data=bn3, act_type='relu', name=name + '_relu3')
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conv3 = Conv(data=act3, num_filter=num_filter, kernel=(1,1), stride=(1,1), pad=(0,0), no_bias=True,
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workspace=workspace, name=name + '_conv3')
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if dim_match:
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shortcut = data
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else:
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shortcut = Conv(data=act1, num_filter=num_filter, kernel=(1,1), stride=stride, no_bias=True,
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workspace=workspace, name=name+'_sc')
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if memonger:
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shortcut._set_attr(mirror_stage='True')
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return conv3 + shortcut
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def conv_hpm(data, num_filter, stride, dim_match, name, binarize, dcn, dilation, **kwargs):
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bit = 1
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#print('in unit2')
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# the same as https://github.com/facebook/fb.resnet.torch#notes, a bit difference with origin paper
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bn1 = mx.sym.BatchNorm(data=data, fix_gamma=False, eps=2e-5, momentum=bn_mom, name=name + '_bn1')
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act1 = Act(data=bn1, act_type='relu', name=name + '_relu1')
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conv1 = Conv(data=act1, num_filter=int(num_filter*0.5), kernel=(3,3), stride=(1,1), pad=(dilation,dilation), dilate=(dilation,dilation),
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no_bias=True, workspace=workspace, name=name + '_conv1')
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bn2 = mx.sym.BatchNorm(data=conv1, fix_gamma=False, eps=2e-5, momentum=bn_mom, name=name + '_bn2')
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act2 = Act(data=bn2, act_type='relu', name=name + '_relu2')
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conv2 = Conv(data=act2, num_filter=int(num_filter*0.25), kernel=(3,3), stride=(1,1), pad=(dilation,dilation), dilate=(dilation,dilation),
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no_bias=True, workspace=workspace, name=name + '_conv2')
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bn3 = mx.sym.BatchNorm(data=conv2, fix_gamma=False, eps=2e-5, momentum=bn_mom, name=name + '_bn3')
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act3 = Act(data=bn3, act_type='relu', name=name + '_relu3')
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conv3 = Conv(data=act3, num_filter=int(num_filter*0.25), kernel=(3,3), stride=(1,1), pad=(dilation,dilation), dilate=(dilation,dilation),
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no_bias=True, workspace=workspace, name=name + '_conv3')
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conv4 = mx.symbol.Concat(*[conv1, conv2, conv3])
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if dim_match:
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shortcut = data
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else:
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shortcut = Conv(data=act1, num_filter=num_filter, kernel=(1,1), stride=stride, no_bias=True,
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workspace=workspace, name=name+'_sc')
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if memonger:
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shortcut._set_attr(mirror_stage='True')
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return conv4 + shortcut
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def block17(net, input_num_channels, scale=1.0, with_act=True, act_type='relu', mirror_attr={}, name=''):
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tower_conv = ConvFactory(net, 192, (1, 1), name=name+'_conv')
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tower_conv1_0 = ConvFactory(net, 129, (1, 1), name=name+'_conv1_0')
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tower_conv1_1 = ConvFactory(tower_conv1_0, 160, (1, 7), pad=(1, 2), name=name+'_conv1_1')
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tower_conv1_2 = ConvFactory(tower_conv1_1, 192, (7, 1), pad=(2, 1), name=name+'_conv1_2')
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tower_mixed = mx.symbol.Concat(*[tower_conv, tower_conv1_2])
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tower_out = ConvFactory(
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tower_mixed, input_num_channels, (1, 1), with_act=False, name=name+'_conv_out')
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net = net+scale * tower_out
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if with_act:
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act = mx.symbol.Activation(
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data=net, act_type=act_type, attr=mirror_attr)
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return act
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else:
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return net
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def block35(net, input_num_channels, scale=1.0, with_act=True, act_type='relu', mirror_attr={}, name=''):
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M = 1.0
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tower_conv = ConvFactory(net, int(input_num_channels*0.25*M), (1, 1), name=name+'_conv')
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tower_conv1_0 = ConvFactory(net, int(input_num_channels*0.25*M), (1, 1), name=name+'_conv1_0')
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tower_conv1_1 = ConvFactory(tower_conv1_0, int(input_num_channels*0.25*M), (3, 3), pad=(1, 1), name=name+'_conv1_1')
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tower_conv2_0 = ConvFactory(net, int(input_num_channels*0.25*M), (1, 1), name=name+'_conv2_0')
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tower_conv2_1 = ConvFactory(tower_conv2_0, int(input_num_channels*0.375*M), (3, 3), pad=(1, 1), name=name+'_conv2_1')
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tower_conv2_2 = ConvFactory(tower_conv2_1, int(input_num_channels*0.5*M), (3, 3), pad=(1, 1), name=name+'_conv2_2')
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tower_mixed = mx.symbol.Concat(*[tower_conv, tower_conv1_1, tower_conv2_2])
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tower_out = ConvFactory(
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tower_mixed, input_num_channels, (1, 1), with_act=False, name=name+'_conv_out')
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net = net+scale * tower_out
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if with_act:
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act = mx.symbol.Activation(
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data=net, act_type=act_type, attr=mirror_attr)
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return act
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else:
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return net
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def conv_inception(data, num_filter, stride, dim_match, name, binarize, dcn, dilate, **kwargs):
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assert not binarize
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if stride[0]>1 or not dim_match:
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return conv_resnet(data, num_filter, stride, dim_match, name, binarize, dcn, dilate, **kwargs)
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conv4 = block35(data, num_filter, name=name+'_block35')
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return conv4
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def conv_cab(data, num_filter, stride, dim_match, name, binarize, dcn, dilate, **kwargs):
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if stride[0]>1 or not dim_match:
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return conv_hpm(data, num_filter, stride, dim_match, name, binarize, dcn, dilate, **kwargs)
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cab = CAB(data, num_filter, 1, 4, workspace, name, dilate, 1)
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return cab.get()
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def conv_block(data, num_filter, stride, dim_match, name, binarize, dcn, dilate):
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if config.net_block=='resnet':
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return conv_resnet(data, num_filter, stride, dim_match, name, binarize, dcn, dilate)
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elif config.net_block=='inception':
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return conv_inception(data, num_filter, stride, dim_match, name, binarize, dcn, dilate)
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elif config.net_block=='hpm':
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return conv_hpm(data, num_filter, stride, dim_match, name, binarize, dcn, dilate)
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elif config.net_block=='cab':
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return conv_cab(data, num_filter, stride, dim_match, name, binarize, dcn, dilate)
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elif config.net_block=='prnet':
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return conv_prnet(data, num_filter, stride, dim_match, name, binarize, dcn, dilate)
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def hourglass(data, nFilters, nModules, n, workspace, name, binarize, dcn):
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s = 2
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_dcn = False
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up1 = data
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for i in xrange(nModules):
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up1 = conv_block(up1, nFilters, (1,1), True, "%s_up1_%d"%(name,i), binarize, _dcn, 1)
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low1 = mx.sym.Pooling(data=data, kernel=(s, s), stride=(s,s), pad=(0,0), pool_type='max')
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#low1 = ConvFactory(data, nFilters, (4,4), stride=(2,2), pad=(1,1), name=name+'_conv')
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#low1 = ConvFactory(data, nFilters, (3,3), stride=(2,2), pad=(1,1), name=name+'_conv')
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#low1 = ConvFactory(up1, nFilters, (3,3), stride=(2,2), pad=(1,1), name=name+'_conv')
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for i in xrange(nModules):
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low1 = conv_block(low1, nFilters, (1,1), True, "%s_low1_%d"%(name,i), binarize, _dcn, 1)
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if n>1:
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low2 = hourglass(low1, nFilters, nModules, n-1, workspace, "%s_%d"%(name, n-1), binarize, dcn)
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else:
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low2 = low1
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for i in xrange(nModules):
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low2 = conv_block(low2, nFilters, (1,1), True, "%s_low2_%d"%(name,i), binarize, _dcn, 1) #TODO
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low3 = low2
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for i in xrange(nModules):
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low3 = conv_block(low3, nFilters, (1,1), True, "%s_low3_%d"%(name,i), binarize, _dcn, 1)
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up2 = mx.symbol.UpSampling(low3, scale=s, sample_type='nearest', workspace=512, name='%s_upsampling_%s'%(name,n), num_args=1)
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#up2 = mx.symbol.UpSampling(low3, scale=s, sample_type='bilinear', num_filter=nFilters, workspace=512, name='%s_upsampling_%s'%(name,n), num_args=1)
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#up2 = mx.symbol.Deconvolution(data=low3, num_filter=nFilters, kernel=(s*2,s*2),
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# stride=(s, s), pad=(s//2, s//2),
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# name='%s_upsampling_%s'%(name,n),
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# attr={'lr_mult': '0.1'})
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#return mx.symbol.add_n(up1, up2)
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return up2
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def prnet_loss(pred, gt_label, mask_label):
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loss = pred - gt_label
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#loss = mx.symbol.smooth_l1(loss, scalar=3.0)
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loss = mx.symbol.abs(loss)
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loss = mx.symbol.broadcast_mul(loss, mask_label)
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#loss = mx.symbol.mean(loss, axis=0)
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#loss = loss*loss
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#loss = mx.symbol.mean(loss)
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return loss
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def ce_loss(x, y):
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#loss = mx.sym.SoftmaxOutput(data = x, label = y, normalization='valid', multi_output=True)
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x_max = mx.sym.max(x, axis=[2,3], keepdims=True)
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x = mx.sym.broadcast_minus(x, x_max)
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body = mx.sym.exp(x)
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sums = mx.sym.sum(body, axis=[2,3], keepdims=True)
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body = mx.sym.broadcast_div(body, sums)
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loss = mx.sym.log(body)
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loss = loss*y*-1.0
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#loss = mx.symbol.mean(loss, axis=[1,2,3])
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loss = mx.symbol.mean(loss)
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return loss
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def get_symbol(num_classes):
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m = config.multiplier
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sFilters = max(int(64*m), 16)
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mFilters = max(int(128*m), 32)
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nFilters = int(256*m)
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|
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nModules = config.net_modules
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nStacks = config.net_stacks
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binarize = config.net_binarize
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input_size = config.input_img_size
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label_size = config.output_label_size
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use_STA = config.net_sta
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N = config.net_n
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DCN = config.net_dcn
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per_batch_size = config.per_batch_size
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print('binarize', binarize)
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print('use_STA', use_STA)
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print('use_N', N)
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print('use_DCN', DCN)
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print('per_batch_size', per_batch_size)
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#assert(label_size==64 or label_size==32)
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#assert(input_size==128 or input_size==256)
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D = input_size // label_size
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print(input_size, label_size, D)
|
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data = mx.sym.Variable(name='data')
|
|
data = data-127.5
|
|
data = data*0.0078125
|
|
gt_label = mx.symbol.Variable(name='softmax_label')
|
|
mask_label = mx.symbol.Variable(name='mask_label')
|
|
losses = []
|
|
closses = []
|
|
#body = Conv(data=data, num_filter=sFilters, kernel=(3, 3), stride=(1,1), pad=(1, 1),
|
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# no_bias=True, name="conv0", workspace=workspace)
|
|
body = Conv(data=data, num_filter=sFilters, kernel=(7,7), stride=(2,2), pad=(3,3),
|
|
no_bias=True, name="conv0", workspace=workspace)
|
|
#body = Conv(data=data, num_filter=sFilters, kernel=(4,4), stride=(2,2), pad=(1,1),
|
|
# no_bias=True, name="conv0", workspace=workspace)
|
|
body = mx.sym.BatchNorm(data=body, fix_gamma=False, eps=2e-5, momentum=bn_mom, name='bn0')
|
|
body = Act(data=body, act_type='relu', name='relu0')
|
|
|
|
dcn = False
|
|
body = conv_block(body, mFilters, (1,1), sFilters==mFilters, 'res0', False, dcn, 1)
|
|
body = mx.sym.Pooling(data=body, kernel=(2, 2), stride=(2,2), pad=(0,0), pool_type='max')
|
|
|
|
#body = Conv(data=body, num_filter=mFilters, kernel=(4,4), stride=(2,2), pad=(1,1),
|
|
# no_bias=True, name="conv1", workspace=workspace)
|
|
#body = mx.sym.BatchNorm(data=body, fix_gamma=False, eps=2e-5, momentum=bn_mom, name='bn1')
|
|
#body = Act(data=body, act_type='relu', name='relu1')
|
|
|
|
#body = conv_block(body, mFilters, (1,1), True, 'res1', False, dcn, 1) #TODO
|
|
body = conv_block(body, nFilters, (1,1), mFilters==nFilters, 'res2', binarize, dcn, 1) #binarize=True?
|
|
|
|
heatmap = None
|
|
outs = []
|
|
|
|
body = hourglass(body, nFilters, nModules, config.net_n, workspace, 'stack0_hg', binarize, dcn)
|
|
for j in xrange(nModules):
|
|
body = conv_block(body, nFilters, (1,1), True, 'stack0_unit%d'%(j), binarize, dcn, 1)
|
|
_dcn = False
|
|
ll = ConvFactory(body, nFilters, (1,1), dcn = _dcn, name='stack0_ll')
|
|
_name = 'heatmap'
|
|
pred = Conv(data=ll, num_filter=num_classes, kernel=(1, 1), stride=(1,1), pad=(0,0),
|
|
name=_name, workspace=workspace)
|
|
loss = prnet_loss(pred, gt_label, mask_label)
|
|
outs.append(mx.sym.MakeLoss(loss))
|
|
|
|
|
|
pred = mx.symbol.BlockGrad(pred)
|
|
#loss = mx.symbol.add_n(*losses)
|
|
#loss = mx.symbol.MakeLoss(loss)
|
|
#syms = [loss]
|
|
outs.append(pred)
|
|
sym = mx.symbol.Group( outs )
|
|
return sym
|
|
|
|
def init_weights(sym, data_shape_dict):
|
|
#print('in hg')
|
|
arg_name = sym.list_arguments()
|
|
aux_name = sym.list_auxiliary_states()
|
|
arg_shape, _, aux_shape = sym.infer_shape(**data_shape_dict)
|
|
arg_shape_dict = dict(zip(arg_name, arg_shape))
|
|
aux_shape_dict = dict(zip(aux_name, aux_shape))
|
|
#print(aux_shape)
|
|
#print(aux_params)
|
|
#print(arg_shape_dict)
|
|
arg_params = {}
|
|
aux_params = {}
|
|
for k,v in arg_shape_dict.iteritems():
|
|
#print(k,v)
|
|
if k.endswith('offset_weight') or k.endswith('offset_bias'):
|
|
print('initializing',k)
|
|
arg_params[k] = mx.nd.zeros(shape = v)
|
|
elif k.startswith('fc6_'):
|
|
if k.endswith('_weight'):
|
|
print('initializing',k)
|
|
arg_params[k] = mx.random.normal(0, 0.01, shape=v)
|
|
elif k.endswith('_bias'):
|
|
print('initializing',k)
|
|
arg_params[k] = mx.nd.zeros(shape=v)
|
|
elif k.find('upsampling')>=0:
|
|
print('initializing upsampling_weight', k)
|
|
arg_params[k] = mx.nd.zeros(shape=arg_shape_dict[k])
|
|
init = mx.init.Initializer()
|
|
init._init_bilinear(k, arg_params[k])
|
|
return arg_params, aux_params
|
|
|