util.h

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/******************************************************************************
 * Copyright 2018 The Apollo 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.
 *****************************************************************************/
#pragma once

#include <fstream>
#include <map>
#include <string>
#include <vector>

#include "Eigen/Dense"

#include "modules/perception/base/object_types.h"

namespace apollo {
namespace perception {
namespace lidar {

enum {
  VALID_OBJECT_TYPE = static_cast<int>(base::ObjectType::MAX_OBJECT_TYPE) - 2
};

typedef Eigen::Matrix<double, VALID_OBJECT_TYPE, 1> Vectord;
typedef Eigen::Matrix<int, VALID_OBJECT_TYPE, 1> Vectori;
typedef Eigen::Matrix<double, VALID_OBJECT_TYPE, VALID_OBJECT_TYPE> Matrixd;

namespace util {

void FromStdToVector(const std::vector<float>& src_prob, Vectord* dst_prob);

void FromEigenToVector(const Vectord& src_prob, std::vector<float>* dst_prob);

void ToLog(Vectord* prob);

void ToExp(Vectord* prob);

void ToExpStable(Vectord* prob);

void Normalize(Vectord* prob);

void NormalizeRow(Matrixd* prob);

bool LoadSingleMatrix(std::ifstream& fin, Matrixd* matrix);

bool LoadSingleMatrixFile(const std::string& filename, Matrixd* matrix);

bool LoadMultipleMatricesFile(const std::string& filename,
                              std::map<std::string, Matrixd>* matrices);

}  // namespace util
}  // namespace lidar
}  // namespace perception
}  // namespace apollo