detection map evaluator for SSD

emailweixu-patch-1
wanghaox 8 years ago
parent e72b865cb1
commit 67cbb3e3b6

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/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
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. */
#include "paddle/operators/detection_map_op.h"
namespace paddle {
namespace operators {
using Tensor = framework::Tensor;
class DetectionMAPOp : public framework::OperatorWithKernel {
public:
using framework::OperatorWithKernel::OperatorWithKernel;
void InferShape(framework::InferShapeContext* ctx) const override {
auto map_dim = framework::make_ddim({1});
ctx->SetOutputDim("MAP", map_dim);
}
protected:
framework::OpKernelType GetKernelType(
const framework::ExecutionContext& ctx) const override {
return framework::OpKernelType(
framework::ToDataType(ctx.Input<framework::Tensor>("Label")->type()),
ctx.device_context());
}
};
class DetectionMAPOpMaker : public framework::OpProtoAndCheckerMaker {
public:
DetectionMAPOpMaker(framework::OpProto* proto,
framework::OpAttrChecker* op_checker)
: OpProtoAndCheckerMaker(proto, op_checker) {
AddInput("Detect", "The detection output.");
AddInput("Label", "The label data.");
AddOutput("MAP", "The MAP evaluate result of the detection.");
AddAttr<float>("overlap_threshold", "The overlap threshold.")
.SetDefault(.3f);
AddAttr<bool>("evaluate_difficult",
"Switch to control whether the difficult data is evaluated.")
.SetDefault(true);
AddAttr<std::string>("ap_type",
"The AP algorithm type, 'Integral' or '11point'.")
.SetDefault("Integral");
AddComment(R"DOC(
Detection MAP Operator.
Detection MAP evaluator for SSD(Single Shot MultiBox Detector) algorithm.
Please get more information from the following papers:
https://arxiv.org/abs/1512.02325.
)DOC");
}
};
} // namespace operators
} // namespace paddle
namespace ops = paddle::operators;
REGISTER_OP_WITHOUT_GRADIENT(detection_map, ops::DetectionMAPOp,
ops::DetectionMAPOpMaker);
REGISTER_OP_CPU_KERNEL(
detection_map, ops::DetectionMAPOpKernel<paddle::platform::GPUPlace, float>,
ops::DetectionMAPOpKernel<paddle::platform::GPUPlace, double>);

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/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
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. */
#include "paddle/operators/detection_map_op.h"
namespace ops = paddle::operators;
REGISTER_OP_CUDA_KERNEL(
detection_map, ops::DetectionMAPOpKernel<paddle::platform::GPUPlace, float>,
ops::DetectionMAPOpKernel<paddle::platform::GPUPlace, double>);

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/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
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. */
#include "paddle/operators/math/detection_util.h"
#include "paddle/operators/math/math_function.h"
namespace paddle {
namespace operators {
namespace math {} // namespace math
} // namespace operators
} // namespace paddle

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/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
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. */
#include "paddle/operators/math/detection_util.h"
#include "paddle/operators/math/math_function.h"
#include "paddle/platform/cuda_helper.h"
namespace paddle {
namespace operators {
namespace math {} // namespace math
} // namespace operators
} // namespace paddle

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/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
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. */
#pragma once
#include "paddle/framework/selected_rows.h"
#include "paddle/platform/device_context.h"
namespace paddle {
namespace operators {
namespace math {
template <typename T>
struct BBox {
BBox(T x_min, T y_min, T x_max, T y_max)
: x_min(x_min),
y_min(y_min),
x_max(x_max),
y_max(y_max),
is_difficult(false) {}
BBox() {}
T get_width() const { return x_max - x_min; }
T get_height() const { return y_max - y_min; }
T get_center_x() const { return (x_min + x_max) / 2; }
T get_center_y() const { return (y_min + y_max) / 2; }
T get_area() const { return get_width() * get_height(); }
// coordinate of bounding box
T x_min;
T y_min;
T x_max;
T y_max;
// whether difficult object (e.g. object with heavy occlusion is difficult)
bool is_difficult;
};
template <typename T>
void GetBBoxFromDetectData(const T* detect_data, const size_t num_bboxes,
std::vector<T>& labels, std::vector<T>& scores,
std::vector<BBox<T>>& bboxes) {
size_t out_offset = bboxes.size();
labels.resize(out_offset + num_bboxes);
scores.resize(out_offset + num_bboxes);
bboxes.resize(out_offset + num_bboxes);
for (size_t i = 0; i < num_bboxes; ++i) {
labels[out_offset + i] = *(detect_data + i * 7 + 1);
scores[out_offset + i] = *(detect_data + i * 7 + 2);
BBox<T> bbox;
bbox.x_min = *(detect_data + i * 7 + 3);
bbox.y_min = *(detect_data + i * 7 + 4);
bbox.x_max = *(detect_data + i * 7 + 5);
bbox.y_max = *(detect_data + i * 7 + 6);
bboxes[out_offset + i] = bbox;
};
}
template <typename T>
void GetBBoxFromLabelData(const T* label_data, const size_t num_bboxes,
std::vector<BBox<T>>& bboxes) {
size_t out_offset = bboxes.size();
bboxes.resize(bboxes.size() + num_bboxes);
for (size_t i = 0; i < num_bboxes; ++i) {
BBox<T> bbox;
bbox.x_min = *(label_data + i * 6 + 1);
bbox.y_min = *(label_data + i * 6 + 2);
bbox.x_max = *(label_data + i * 6 + 3);
bbox.y_max = *(label_data + i * 6 + 4);
T is_difficult = *(label_data + i * 6 + 5);
if (std::abs(is_difficult - 0.0) < 1e-6)
bbox.is_difficult = false;
else
bbox.is_difficult = true;
bboxes[out_offset + i] = bbox;
}
}
template <typename T>
inline float JaccardOverlap(const BBox<T>& bbox1, const BBox<T>& bbox2) {
if (bbox2.x_min > bbox1.x_max || bbox2.x_max < bbox1.x_min ||
bbox2.y_min > bbox1.y_max || bbox2.y_max < bbox1.y_min) {
return 0.0;
} else {
float inter_x_min = std::max(bbox1.x_min, bbox2.x_min);
float inter_y_min = std::max(bbox1.y_min, bbox2.y_min);
float inter_x_max = std::min(bbox1.x_max, bbox2.x_max);
float inter_y_max = std::min(bbox1.y_max, bbox2.y_max);
float inter_width = inter_x_max - inter_x_min;
float inter_height = inter_y_max - inter_y_min;
float inter_area = inter_width * inter_height;
float bbox_area1 = bbox1.get_area();
float bbox_area2 = bbox2.get_area();
return inter_area / (bbox_area1 + bbox_area2 - inter_area);
}
}
template <typename T>
bool SortScorePairDescend(const std::pair<float, T>& pair1,
const std::pair<float, T>& pair2) {
return pair1.first > pair2.first;
}
// template <>
// bool SortScorePairDescend(const std::pair<float, NormalizedBBox>& pair1,
// const std::pair<float, NormalizedBBox>& pair2) {
// return pair1.first > pair2.first;
// }
} // namespace math
} // namespace operators
} // namespace paddle

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import unittest
import numpy as np
import sys
import collections
import math
from op_test import OpTest
class TestDetectionMAPOp(OpTest):
def set_data(self):
self.init_test_case()
self.mAP = [self.calc_map(self.tf_pos)]
self.label = np.array(self.label).astype('float32')
self.detect = np.array(self.detect).astype('float32')
self.mAP = np.array(self.mAP).astype('float32')
self.inputs = {
'Label': (self.label, self.label_lod),
'Detect': self.detect
}
self.attrs = {
'overlap_threshold': self.overlap_threshold,
'evaluate_difficult': self.evaluate_difficult,
'ap_type': self.ap_type
}
self.outputs = {'MAP': self.mAP}
def init_test_case(self):
self.overlap_threshold = 0.3
self.evaluate_difficult = True
self.ap_type = "Integral"
self.label_lod = [[0, 2, 4]]
# label xmin ymin xmax ymax difficult
self.label = [[1, 0.1, 0.1, 0.3, 0.3, 0], [1, 0.6, 0.6, 0.8, 0.8, 1],
[2, 0.3, 0.3, 0.6, 0.5, 0], [1, 0.7, 0.1, 0.9, 0.3, 0]]
# image_id label score xmin ymin xmax ymax difficult
self.detect = [
[0, 1, 0.3, 0.1, 0.0, 0.4, 0.3], [0, 1, 0.7, 0.0, 0.1, 0.2, 0.3],
[0, 1, 0.9, 0.7, 0.6, 0.8, 0.8], [1, 2, 0.8, 0.2, 0.1, 0.4, 0.4],
[1, 2, 0.1, 0.4, 0.3, 0.7, 0.5], [1, 1, 0.2, 0.8, 0.1, 1.0, 0.3],
[1, 3, 0.2, 0.8, 0.1, 1.0, 0.3]
]
# image_id label score false_pos false_pos
# [-1, 1, 3, -1, -1],
# [-1, 2, 1, -1, -1]
self.tf_pos = [[0, 1, 0.9, 1, 0], [0, 1, 0.7, 1, 0], [0, 1, 0.3, 0, 1],
[1, 1, 0.2, 1, 0], [1, 2, 0.8, 0, 1], [1, 2, 0.1, 1, 0],
[1, 3, 0.2, 0, 1]]
def calc_map(self, tf_pos):
mAP = 0.0
count = 0
class_pos_count = {}
true_pos = {}
false_pos = {}
def get_accumulation(pos_list):
sorted_list = sorted(pos_list, key=lambda pos: pos[0], reverse=True)
sum = 0
accu_list = []
for (score, count) in sorted_list:
sum += count
accu_list.append(sum)
return accu_list
label_count = collections.Counter()
for (label, xmin, ymin, xmax, ymax, difficult) in self.label:
if self.evaluate_difficult:
label_count[label] += 1
elif not difficult:
label_count[label] += 1
true_pos = collections.defaultdict(list)
false_pos = collections.defaultdict(list)
for (image_id, label, score, tp, fp) in tf_pos:
true_pos[label].append([score, tp])
false_pos[label].append([score, fp])
for (label, label_pos_num) in label_count.items():
if label_pos_num == 0 or label not in true_pos:
continue
label_true_pos = true_pos[label]
label_false_pos = false_pos[label]
accu_tp_sum = get_accumulation(label_true_pos)
accu_fp_sum = get_accumulation(label_false_pos)
precision = []
recall = []
for i in range(len(accu_tp_sum)):
precision.append(
float(accu_tp_sum[i]) /
float(accu_tp_sum[i] + accu_fp_sum[i]))
recall.append(float(accu_tp_sum[i]) / label_pos_num)
if self.ap_type == "11point":
max_precisions = [11.0, 0.0]
start_idx = len(accu_tp_sum) - 1
for j in range(10, 0, -1):
for i in range(start_idx, 0, -1):
if recall[i] < j / 10.0:
start_idx = i
if j > 0:
max_precisions[j - 1] = max_precisions[j]
break
else:
if max_precisions[j] < accu_precision[i]:
max_precisions[j] = accu_precision[i]
for j in range(10, 0, -1):
mAP += max_precisions[j] / 11
count += 1
elif self.ap_type == "Integral":
average_precisions = 0.0
prev_recall = 0.0
for i in range(len(accu_tp_sum)):
if math.fabs(recall[i] - prev_recall) > 1e-6:
average_precisions += precision[i] * \
math.fabs(recall[i] - prev_recall)
prev_recall = recall[i]
mAP += average_precisions
count += 1
if count != 0: mAP /= count
return mAP * 100.0
def setUp(self):
self.op_type = "detection_map"
self.set_data()
def test_check_output(self):
self.check_output()
class TestDetectionMAPOpSkipDiff(TestDetectionMAPOp):
def init_test_case(self):
super(TestDetectionMAPOpSkipDiff, self).init_test_case()
self.evaluate_difficult = False
self.tf_pos = [[0, 1, 0.7, 1, 0], [0, 1, 0.3, 0, 1], [1, 1, 0.2, 1, 0],
[1, 2, 0.8, 0, 1], [1, 2, 0.1, 1, 0], [1, 3, 0.2, 0, 1]]
if __name__ == '__main__':
unittest.main()
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