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2026-07-13 12:40:42 +08:00

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Python

# Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import math
import sys
import unittest
from decimal import ROUND_HALF_UP, Decimal
import numpy as np
from op_test import OpTest, get_device_place, is_custom_device
import paddle
from paddle.base import core
def _round(x):
"""In Python3 round function rounds to the nearest even number,
we use this function to make the result always round up when the
remainder is 0.5. See more at:
https://stackoverflow.com/questions/33019698/how-to-properly-round-up-half-float-numbers
"""
return Decimal(x).to_integral_value(rounding=ROUND_HALF_UP)
class TestROIPoolOp(OpTest):
def set_data(self):
self.init_test_case()
self.make_rois()
self.calc_roi_pool()
self.inputs = {
'X': self.x,
'ROIs': (self.rois[:, 1:5], self.rois_lod),
'RoisNum': self.boxes_num,
}
self.attrs = {
'spatial_scale': self.spatial_scale,
'pooled_height': self.pooled_height,
'pooled_width': self.pooled_width,
}
self.outputs = {'Out': self.outs, 'Argmax': self.argmaxes}
def init_test_case(self):
self.batch_size = 3
self.channels = 3
self.height = 6
self.width = 4
# n, c, h, w
self.x_dim = (self.batch_size, self.channels, self.height, self.width)
self.spatial_scale = 1.0 / 4.0
self.pooled_height = 2
self.pooled_width = 2
self.x = np.random.random(self.x_dim).astype('float64')
def calc_roi_pool(self):
out_data = np.zeros(
(
self.rois_num,
self.channels,
self.pooled_height,
self.pooled_width,
)
)
argmax_data = np.zeros(
(
self.rois_num,
self.channels,
self.pooled_height,
self.pooled_width,
)
)
for i in range(self.rois_num):
roi = self.rois[i]
roi_batch_id = int(roi[0])
roi_start_w = int(_round(roi[1] * self.spatial_scale))
roi_start_h = int(_round(roi[2] * self.spatial_scale))
roi_end_w = int(_round(roi[3] * self.spatial_scale))
roi_end_h = int(_round(roi[4] * self.spatial_scale))
roi_height = int(max(roi_end_h - roi_start_h + 1, 1))
roi_width = int(max(roi_end_w - roi_start_w + 1, 1))
x_i = self.x[roi_batch_id]
bin_size_h = float(roi_height) / float(self.pooled_height)
bin_size_w = float(roi_width) / float(self.pooled_width)
for c in range(self.channels):
for ph in range(self.pooled_height):
for pw in range(self.pooled_width):
hstart = int(math.floor(ph * bin_size_h))
wstart = int(math.floor(pw * bin_size_w))
hend = int(math.ceil((ph + 1) * bin_size_h))
wend = int(math.ceil((pw + 1) * bin_size_w))
hstart = min(max(hstart + roi_start_h, 0), self.height)
hend = min(max(hend + roi_start_h, 0), self.height)
wstart = min(max(wstart + roi_start_w, 0), self.width)
wend = min(max(wend + roi_start_w, 0), self.width)
is_empty = (hend <= hstart) or (wend <= wstart)
if is_empty:
out_data[i, c, ph, pw] = 0
else:
out_data[i, c, ph, pw] = -sys.float_info.max
argmax_data[i, c, ph, pw] = -1
for h in range(hstart, hend):
for w in range(wstart, wend):
if x_i[c, h, w] > out_data[i, c, ph, pw]:
out_data[i, c, ph, pw] = x_i[c, h, w]
argmax_data[i, c, ph, pw] = (
h * self.width + w
)
self.outs = out_data.astype('float64')
self.argmaxes = argmax_data.astype('int64')
def make_rois(self):
rois = []
self.rois_lod = [[]]
for bno in range(self.batch_size):
self.rois_lod[0].append(bno + 1)
for i in range(bno + 1):
x1 = np.random.randint(
0, self.width // self.spatial_scale - self.pooled_width
)
y1 = np.random.randint(
0, self.height // self.spatial_scale - self.pooled_height
)
x2 = np.random.randint(
x1 + self.pooled_width, self.width // self.spatial_scale
)
y2 = np.random.randint(
y1 + self.pooled_height, self.height // self.spatial_scale
)
roi = [bno, x1, y1, x2, y2]
rois.append(roi)
self.rois_num = len(rois)
self.rois = np.array(rois).astype("float64")
self.boxes_num = np.array(
[bno + 1 for bno in range(self.batch_size)]
).astype('int32')
def setUp(self):
self.op_type = "roi_pool"
self.python_api = (
lambda x, boxes, boxes_num, pooled_height, pooled_width, spatial_scale: (
paddle.vision.ops.roi_pool(
x,
boxes,
boxes_num,
(pooled_height, pooled_width),
spatial_scale,
)
)
)
self.python_out_sig = ["Out"]
self.set_data()
def test_check_output(self):
self.check_output()
def test_check_grad(self):
self.check_grad(['X'], 'Out')
class TestROIPoolInLodOp(TestROIPoolOp):
def set_data(self):
self.init_test_case()
self.make_rois()
self.calc_roi_pool()
seq_len = self.rois_lod[0]
self.inputs = {
'X': self.x,
'ROIs': (self.rois[:, 1:5], self.rois_lod),
'RoisNum': np.asarray(seq_len).astype('int32'),
}
self.attrs = {
'spatial_scale': self.spatial_scale,
'pooled_height': self.pooled_height,
'pooled_width': self.pooled_width,
}
self.outputs = {'Out': self.outs, 'Argmax': self.argmaxes}
class TestROIPoolInLodOp_ZeroSize(TestROIPoolOp):
def init_test_case(self):
self.batch_size = 3
self.channels = 0
self.height = 6
self.width = 4
# n, c, h, w
self.x_dim = (self.batch_size, self.channels, self.height, self.width)
self.spatial_scale = 1.0 / 4.0
self.pooled_height = 2
self.pooled_width = 2
self.x = np.random.random(self.x_dim).astype('float64')
def make_rois(self):
rois = []
self.rois_lod = [[]]
for bno in range(self.batch_size):
self.rois_lod[0].append(bno + 1)
for i in range(bno + 1):
x1 = np.random.randint(
0, self.width // self.spatial_scale - self.pooled_width
)
x2 = np.random.randint(
x1 + self.pooled_width, self.width // self.spatial_scale
)
if self.height == 0:
y1 = 0
y2 = 0
else:
y1 = np.random.random_integers(
0,
self.height // self.spatial_scale - self.pooled_height,
)
y2 = np.random.random_integers(
y1 + self.pooled_height,
self.height // self.spatial_scale,
)
roi = [bno, x1, y1, x2, y2]
rois.append(roi)
self.rois_num = len(rois)
self.rois = np.array(rois).astype("float64")
self.boxes_num = np.array(
[bno + 1 for bno in range(self.batch_size)]
).astype('int32')
def set_data(self):
self.init_test_case()
self.make_rois()
self.calc_roi_pool()
seq_len = self.rois_lod[0]
self.inputs = {
'X': self.x,
'ROIs': (self.rois[:, 1:5], self.rois_lod),
'RoisNum': np.asarray(seq_len).astype('int32'),
}
self.attrs = {
'spatial_scale': self.spatial_scale,
'pooled_height': self.pooled_height,
'pooled_width': self.pooled_width,
}
self.outputs = {'Out': self.outs, 'Argmax': self.argmaxes}
def test_check_output(self):
self.check_output_with_place(
core.CPUPlace(),
)
if paddle.is_compiled_with_cuda() or is_custom_device():
self.check_output_with_place(
get_device_place(),
)
def test_check_grad(self):
self.check_grad_with_place(core.CPUPlace(), ['X'], 'Out')
if paddle.is_compiled_with_cuda() or is_custom_device():
self.check_grad_with_place(get_device_place(), ['X'], 'Out')
if __name__ == '__main__':
unittest.main()