Bilinear¶
该接口为参数初始化函数,用于转置卷积函数中,对输入进行上采样。用户通过任意整型因子放大 shape 为(B,C,H,W)的特征图。
代码示例¶
import math
import paddle
import paddle.nn as nn
from paddle.regularizer import L2Decay
factor = 2
C = 2
B = 8
H = W = 32
w_attr = paddle.ParamAttr(learning_rate=0.,
regularizer=L2Decay(0.),
initializer=nn.initializer.Bilinear())
data = paddle.rand([B, 3, H, W], dtype='float32')
conv_up = nn.Conv2DTranspose(3,
out_channels=C,
kernel_size=2 * factor - factor % 2,
padding=int(
math.ceil((factor - 1) / 2.)),
stride=factor,
weight_attr=w_attr,
bias_attr=False)
x = conv_up(data)