wehub-resource-sync
51 lines
1.5 KiB
C++
51 lines
1.5 KiB
C++
// Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#pragma once
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namespace phi {
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template <typename T>
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struct Box {
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T x, y, w, h;
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};
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template <typename T>
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static inline T sigmoid(T x) {
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return 1.0 / (1.0 + std::exp(-x));
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}
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template <typename T>
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static inline Box<T> GetGtBox(const T* gt, int batch, int max_boxes, int idx) {
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Box<T> b;
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b.x = gt[(batch * max_boxes + idx) * 4];
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b.y = gt[(batch * max_boxes + idx) * 4 + 1];
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b.w = gt[(batch * max_boxes + idx) * 4 + 2];
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b.h = gt[(batch * max_boxes + idx) * 4 + 3];
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return b;
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}
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static inline int64_t GetEntryIndex(int batch,
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int an_idx,
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int hw_idx,
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int an_num,
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int an_stride,
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int stride,
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int entry) {
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return (static_cast<int64_t>(batch) * an_num + an_idx) * an_stride +
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entry * stride + hw_idx;
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}
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} // namespace phi
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