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arXiv 1609.07009cs.CV
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反卷积层与卷积层相同吗?

Is the deconvolution layer the same as a convolutional layer?

Twitter, Inc.(推特公司)

Wenzhe Shi, Jose Caballero, Lucas Theis, Ferenc Huszar, Andrew Aitken, Christian Ledig, Zehan Wang

摘要:

在这篇文章中,我们想重点讨论与CVPR上大多数人问我们的关于我们提出的网络的两个问题相关的方面。首先,我们提出的层和反卷积层之间的关系是什么?其次,为什么低分辨率(LR)空间中的卷积是更好的选择?这些都是我们试图在论文中回答的关键问题,但我们无法像我们希望的那样在空间允许范围内深入和清晰。为了更好地回答本说明中的这些问题,我们首先讨论转置卷积层、子像素卷积层和我们的高效子像素卷积层形式的反卷积层之间的关系。我们将高效的子像素卷积层称为LR空间中的卷积层,以将其与常见的子像素卷积层区分开来。然后,我们将证明,对于固定的计算预算和复杂度,仅在LR空间中进行卷积的网络在相同的速度下比首先在高分辨率空间中对输入进行上采样的网络具有更高的表示能力。

英文摘要:

In this note, we want to focus on aspects related to two questions most people asked us at CVPR about the network we presented. Firstly, What is the relationship between our proposed layer and the deconvolution layer? And secondly, why are convolutions in low-resolution (LR) space a better choice? These are key questions we tried to answer in the paper, but we were not able to go into as much depth and clarity as we would have liked in the space allowance. To better answer these questions in this note, we first discuss the relationships between the deconvolution layer in the forms of the transposed convolution layer, the sub-pixel convolutional layer and our efficient sub-pixel convolutional layer. We will refer to our efficient sub-pixel convolutional layer as a convolutional layer in LR space to distinguish it from the common sub-pixel convolutional layer. We will then show that for a fixed computational budget and complexity, a network with convolutions exclusively in LR space has more representation power at the same speed than a network that first upsamples the input in high resolution space.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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