p47068915
/
mindspore
forked from mindspore-Ecosystem/mindspore
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

fix image gradient height 1

This commit is contained in:
zhaozhenlong 2020-09-08 17:10:37 +08:00
parent e4c992aabb
commit b790cc1653
1 changed files with 12 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
mindspore/nn/layer/image.py
View File

@ -66,13 +66,19 @@ class ImageGradients(Cell):
check = _check_input_4d(F.shape(images), "images", self.cls_name)
images = F.depend(images, check)
batch_size, depth, height, width = P.Shape()(images)
dy = images[:, :, 1:, :] - images[:, :, :height - 1, :]
dy_last = P.Fill()(P.DType()(images), (batch_size, depth, 1, width), 0)
dy = P.Concat(2)((dy, dy_last))
if height == 1:
dy = P.Fill()(P.DType()(images), (batch_size, depth, 1, width), 0)
else:
dy = images[:, :, 1:, :] - images[:, :, :height - 1, :]
dy_last = P.Fill()(P.DType()(images), (batch_size, depth, 1, width), 0)
dy = P.Concat(2)((dy, dy_last))
dx = images[:, :, :, 1:] - images[:, :, :, :width - 1]
dx_last = P.Fill()(P.DType()(images), (batch_size, depth, height, 1), 0)
dx = P.Concat(3)((dx, dx_last))
if width == 1:
dx = P.Fill()(P.DType()(images), (batch_size, depth, height, 1), 0)
else:
dx = images[:, :, :, 1:] - images[:, :, :, :width - 1]
dx_last = P.Fill()(P.DType()(images), (batch_size, depth, height, 1), 0)
dx = P.Concat(3)((dx, dx_last))
return dy, dx