Skip to content

[Frontend][TFLite] Improve support for half_pixel_centers in resize #11521

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
AndrewZhaoLuo merged 2 commits into from
Jun 9, 2022
Merged

[Frontend][TFLite] Improve support for half_pixel_centers in resize #11521

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
e209683
add resize_nearest_neighbor op test
Jun 1, 2022
2d5e565
Improve support for half_pixel_centers in resize
Jun 1, 2022
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
7 changes: 6 additions & 1 deletion python/tvm/relay/frontend/tflite.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -695,10 +695,15 @@ def _convert_resize(self, method, op):
coord_trans = "align_corners" if align_corners else "asymmetric"
coord_trans = "half_pixel" if half_pixel_centers else coord_trans

rounding_method = ""
if method == "nearest_neighbor":
if not align_corners and half_pixel_centers:
rounding_method = "round_prefer_ceil"

if bilinear_method and input_tensor.qnn_params:
in_expr = self.dequantize(in_expr, input_tensor)
out = _op.image.resize2d(
in_expr, target_size, None, "NHWC", method, coordinate_transformation_mode=coord_trans
in_expr, target_size, None, "NHWC", method, coord_trans, rounding_method
)
if bilinear_method and output_tensor.qnn_params:
out = self.quantize(out, output_tensor)
Expand Down
14 changes: 14 additions & 0 deletions tests/python/frontend/tflite/test_forward.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1693,6 +1693,20 @@ def test_all_resize():
align_corners=False,
half_pixel_centers=False,
)
_test_resize(
tf.image.resize_nearest_neighbor,
images_data_float32,
size_data,
align_corners=True,
half_pixel_centers=False,
)
_test_resize(
tf.image.resize_nearest_neighbor,
images_data_float32,
size_data,
align_corners=False,
half_pixel_centers=True,
)


#######################################################################
Expand Down