style(camodocal): camodocal style

src/mynteye/api/camodocal/include/camodocal/camera_models/Camera.h

@@ -1,10 +1,23 @@
-#ifndef CAMERA_H
+// Copyright 2018 Slightech Co., Ltd. All rights reserved.
-#define CAMERA_H
+//
+// 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.
+#ifndef SRC_MYNTEYE_API_CAMODOCAL_INCLUDE_CAMODOCAL_CAMERA_MODELS_CAMERA_H_
+#define SRC_MYNTEYE_API_CAMODOCAL_INCLUDE_CAMODOCAL_CAMERA_MODELS_CAMERA_H_
 
+#include <vector>
 #include <boost/shared_ptr.hpp>
 #include "eigen3/Eigen/Dense"
 #include <opencv2/core/core.hpp>
-#include <vector>
 
 namespace camodocal {
 
@@ -16,7 +29,7 @@ class Camera {
   class Parameters {
    public:
     EIGEN_MAKE_ALIGNED_OPERATOR_NEW
-    Parameters(ModelType modelType);
+    explicit Parameters(ModelType modelType);
 
     Parameters(
         ModelType modelType, const std::string &cameraName, int w, int h);
@@ -33,9 +46,6 @@ class Camera {
 
     int nIntrinsics(void) const;
 
-    virtual bool readFromYamlFile(const std::string &filename) = 0;
-    virtual void writeToYamlFile(const std::string &filename) const = 0;
-
    protected:
     ModelType m_modelType;
     int m_nIntrinsics;
@@ -58,22 +68,17 @@ class Camera {
       const std::vector<std::vector<cv::Point2f> > &imagePoints) = 0;
   virtual void estimateExtrinsics(
       const std::vector<cv::Point3f> &objectPoints,
-      const std::vector<cv::Point2f> &imagePoints, cv::Mat &rvec,
+      const std::vector<cv::Point2f> &imagePoints,
-      cv::Mat &tvec) const;
+      cv::Mat &rvec, cv::Mat &tvec) const;  // NOLINT
-
-  // Lift points from the image plane to the sphere
-  virtual void liftSphere(
-      const Eigen::Vector2d &p, Eigen::Vector3d &P) const = 0;
-  //%output P
 
   // Lift points from the image plane to the projective space
   virtual void liftProjective(
-      const Eigen::Vector2d &p, Eigen::Vector3d &P) const = 0;
+      const Eigen::Vector2d &p, Eigen::Vector3d &P) const = 0;  // NOLINT
   // %output P
 
   // Projects 3D points to the image plane (Pi function)
   virtual void spaceToPlane(
-      const Eigen::Vector3d &P, Eigen::Vector2d &p) const = 0;
+      const Eigen::Vector3d &P, Eigen::Vector2d &p) const = 0;  // NOLINT
   // %output p
 
   // Projects 3D points to the image plane (Pi function)
@@ -83,25 +88,19 @@ class Camera {
   // %output p
   // %output J
 
-  virtual void undistToPlane(
-      const Eigen::Vector2d &p_u, Eigen::Vector2d &p) const = 0;
-  //%output p
-
   // virtual void initUndistortMap(cv::Mat& map1, cv::Mat& map2, double fScale =
   // 1.0) const = 0;
   virtual cv::Mat initUndistortRectifyMap(
-      cv::Mat &map1, cv::Mat &map2, float fx = -1.0f, float fy = -1.0f,
+      cv::Mat &map1, cv::Mat &map2, float fx = -1.0f, float fy = -1.0f,  // NOLINT
       cv::Size imageSize = cv::Size(0, 0), float cx = -1.0f, float cy = -1.0f,
       cv::Mat rmat = cv::Mat::eye(3, 3, CV_32F)) const = 0;
 
   virtual int parameterCount(void) const = 0;
 
   virtual void readParameters(const std::vector<double> &parameters) = 0;
-  virtual void writeParameters(std::vector<double> &parameters) const = 0;
+  virtual void writeParameters(std::vector<double> &parameters) const = 0;  // NOLINT
 
-  virtual void writeParametersToYamlFile(const std::string &filename) const = 0;
+  virtual std::string parametersToString(void) const = 0;  // NOLINT
-
-  virtual std::string parametersToString(void) const = 0;
 
   /**
    * \brief Calculates the reprojection distance between points
@@ -125,7 +124,7 @@ class Camera {
 
   void projectPoints(
       const std::vector<cv::Point3f> &objectPoints, const cv::Mat &rvec,
-      const cv::Mat &tvec, std::vector<cv::Point2f> &imagePoints) const;
+      const cv::Mat &tvec, std::vector<cv::Point2f> &imagePoints) const;  // NOLINT
 
  protected:
   cv::Mat m_mask;
@@ -135,4 +134,5 @@ typedef boost::shared_ptr<Camera> CameraPtr;
 typedef boost::shared_ptr<const Camera> CameraConstPtr;
 }
 
-#endif
+#endif  // SRC_MYNTEYE_API_CAMODOCAL_INCLUDE_CAMODOCAL_CAMERA_MODELS_CAMERA_H_
+

src/mynteye/api/camodocal/include/camodocal/camera_models/EquidistantCamera.h

@@ -1,10 +1,22 @@
-#ifndef EQUIDISTANTCAMERA_H
+// Copyright 2018 Slightech Co., Ltd. All rights reserved.
-#define EQUIDISTANTCAMERA_H
+//
+// 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.
+#ifndef SRC_MYNTEYE_API_CAMODOCAL_INCLUDE_CAMODOCAL_CAMERA_MODELS_EQUIDISTANTCAMERA_H_
+#define SRC_MYNTEYE_API_CAMODOCAL_INCLUDE_CAMODOCAL_CAMERA_MODELS_EQUIDISTANTCAMERA_H_
 
-#include <opencv2/core/core.hpp>
 #include <string>
-
 #include "Camera.h"
+#include <opencv2/core/core.hpp>
 
 namespace camodocal {
 
@@ -59,9 +71,6 @@ class EquidistantCamera : public Camera {
     double u0(void) const;
     double v0(void) const;
 
-    bool readFromYamlFile(const std::string &filename);
-    void writeToYamlFile(const std::string &filename) const;
-
     Parameters &operator=(const Parameters &other);
     friend std::ostream &operator<<(
         std::ostream &out, const Parameters &params);
@@ -91,7 +100,7 @@ class EquidistantCamera : public Camera {
   /**
   * \brief Constructor from the projection model parameters
   */
-  EquidistantCamera(const Parameters &params);
+  explicit EquidistantCamera(const Parameters &params);
 
   Camera::ModelType modelType(void) const;
   const std::string &cameraName(void) const;
@@ -103,38 +112,31 @@ class EquidistantCamera : public Camera {
       const std::vector<std::vector<cv::Point3f> > &objectPoints,
       const std::vector<std::vector<cv::Point2f> > &imagePoints);
 
-  // Lift points from the image plane to the sphere
-  virtual void liftSphere(const Eigen::Vector2d &p, Eigen::Vector3d &P) const;
-  //%output P
-
   // Lift points from the image plane to the projective space
-  void liftProjective(const Eigen::Vector2d &p, Eigen::Vector3d &P) const;
+  void liftProjective(const Eigen::Vector2d &p, Eigen::Vector3d &P) const;  // NOLINT
   // %output P
 
   // Projects 3D points to the image plane (Pi function)
-  void spaceToPlane(const Eigen::Vector3d &P, Eigen::Vector2d &p) const;
+  void spaceToPlane(const Eigen::Vector3d &P, Eigen::Vector2d &p) const;  // NOLINT
   // %output p
 
   // Projects 3D points to the image plane (Pi function)
   // and calculates jacobian
   void spaceToPlane(
-      const Eigen::Vector3d &P, Eigen::Vector2d &p,
+      const Eigen::Vector3d &P, Eigen::Vector2d &p,  // NOLINT
-      Eigen::Matrix<double, 2, 3> &J) const;
+      Eigen::Matrix<double, 2, 3> &J) const;  // NOLINT
   // %output p
   // %output J
 
-  void undistToPlane(const Eigen::Vector2d &p_u, Eigen::Vector2d &p) const;
-  //%output p
-
   template <typename T>
   static void spaceToPlane(
       const T *const params, const T *const q, const T *const t,
-      const Eigen::Matrix<T, 3, 1> &P, Eigen::Matrix<T, 2, 1> &p);
+      const Eigen::Matrix<T, 3, 1> &P, Eigen::Matrix<T, 2, 1> &p);  // NOLINT
 
   void initUndistortMap(
-      cv::Mat &map1, cv::Mat &map2, double fScale = 1.0) const;
+      cv::Mat &map1, cv::Mat &map2, double fScale = 1.0) const;  // NOLINT
   cv::Mat initUndistortRectifyMap(
-      cv::Mat &map1, cv::Mat &map2, float fx = -1.0f, float fy = -1.0f,
+      cv::Mat &map1, cv::Mat &map2, float fx = -1.0f, float fy = -1.0f,  // NOLINT
       cv::Size imageSize = cv::Size(0, 0), float cx = -1.0f, float cy = -1.0f,
       cv::Mat rmat = cv::Mat::eye(3, 3, CV_32F)) const;
 
@@ -144,9 +146,7 @@ class EquidistantCamera : public Camera {
   void setParameters(const Parameters &parameters);
 
   void readParameters(const std::vector<double> &parameterVec);
-  void writeParameters(std::vector<double> &parameterVec) const;
+  void writeParameters(std::vector<double> &parameterVec) const;  // NOLINT
-
-  void writeParametersToYamlFile(const std::string &filename) const;
 
   std::string parametersToString(void) const;
 
@@ -156,10 +156,10 @@ class EquidistantCamera : public Camera {
 
   void fitOddPoly(
       const std::vector<double> &x, const std::vector<double> &y, int n,
-      std::vector<double> &coeffs) const;
+      std::vector<double> &coeffs) const;  // NOLINT
 
   void backprojectSymmetric(
-      const Eigen::Vector2d &p_u, double &theta, double &phi) const;
+      const Eigen::Vector2d &p_u, double &theta, double &phi) const;  // NOLINT
 
   Parameters mParameters;
 
@@ -227,4 +227,5 @@ void EquidistantCamera::spaceToPlane(
 }
 }
 
-#endif
+#endif  // SRC_MYNTEYE_API_CAMODOCAL_INCLUDE_CAMODOCAL_CAMERA_MODELS_EQUIDISTANTCAMERA_H_
+

src/mynteye/api/camodocal/include/camodocal/gpl/gpl.h

@@ -1,6 +1,20 @@
-#ifndef GPL_H
+// Copyright 2018 Slightech Co., Ltd. All rights reserved.
-#define GPL_H
+//
+// 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.
+#ifndef SRC_MYNTEYE_API_CAMODOCAL_INCLUDE_CAMODOCAL_GPL_GPL_H_
+#define SRC_MYNTEYE_API_CAMODOCAL_INCLUDE_CAMODOCAL_GPL_GPL_H_
 
+#include <vector>
 #include <algorithm>
 #include <cmath>
 #include <opencv2/core/core.hpp>
@@ -48,7 +62,7 @@ const T cube(const T &x) {
 
 template <class T>
 const T random(const T &a, const T &b) {
-  return static_cast<double>(rand()) / RAND_MAX * (b - a) + a;
+  return static_cast<double>(rand()) / RAND_MAX * (b - a) + a;  // NOLINT
 }
 
 template <class T>
@@ -66,35 +80,36 @@ const T randomNormal(const T &sigma) {
   return x1 * w * sigma;
 }
 
-unsigned long long timeInMicroseconds(void);
+unsigned long long timeInMicroseconds(void);  // NOLINT
 
 double timeInSeconds(void);
 
 void colorDepthImage(
-    cv::Mat &imgDepth, cv::Mat &imgColoredDepth, float minRange,
+    cv::Mat &imgDepth, cv::Mat &imgColoredDepth, float minRange,  // NOLINT
     float maxRange);
 
 bool colormap(
-    const std::string &name, unsigned char idx, float &r, float &g, float &b);
+    const std::string &name, unsigned char idx, float &r, float &g, float &b);  // NOLINT
 
 std::vector<cv::Point2i> bresLine(int x0, int y0, int x1, int y1);
 std::vector<cv::Point2i> bresCircle(int x0, int y0, int r);
 
 void fitCircle(
-    const std::vector<cv::Point2d> &points, double &centerX, double &centerY,
+    const std::vector<cv::Point2d> &points, double &centerX, double &centerY,  // NOLINT
-    double &radius);
+    double &radius);  // NOLINT
 
 std::vector<cv::Point2d> intersectCircles(
     double x1, double y1, double r1, double x2, double y2, double r2);
 
 void LLtoUTM(
-    double latitude, double longitude, double &utmNorthing, double &utmEasting,
+    double latitude, double longitude, double &utmNorthing, double &utmEasting,  // NOLINT
-    std::string &utmZone);
+    std::string &utmZone);  // NOLINT
 void UTMtoLL(
-    double utmNorthing, double utmEasting, const std::string &utmZone,
+    double utmNorthing, double utmEasting, const std::string &utmZone,  // NOLINT
-    double &latitude, double &longitude);
+    double &latitude, double &longitude);  // NOLINT
 
-long int timestampDiff(uint64_t t1, uint64_t t2);
+long int timestampDiff(uint64_t t1, uint64_t t2);  // NOLINT
 }
 
-#endif
+#endif  // SRC_MYNTEYE_API_CAMODOCAL_INCLUDE_CAMODOCAL_GPL_GPL_H_
+

src/mynteye/api/camodocal/src/camera_models/Camera.cc

@@ -1,6 +1,18 @@
-#include "camodocal/camera_models/Camera.h"
+// Copyright 2018 Slightech Co., Ltd. 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.
 #include <opencv2/calib3d/calib3d.hpp>
+#include "camodocal/camera_models/Camera.h"
 
 namespace camodocal {
 

src/mynteye/api/camodocal/src/camera_models/EquidistantCamera.cc

@@ -1,14 +1,26 @@
-#include "camodocal/camera_models/EquidistantCamera.h"
+// Copyright 2018 Slightech Co., Ltd. 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.
+#include <iomanip>
+#include <iostream>
 #include <cstdint>
 #include <cmath>
 #include <cstdio>
+#include "camodocal/camera_models/EquidistantCamera.h"
 #include "eigen3/Eigen/Dense"
-#include <iomanip>
-#include <iostream>
 #include <opencv2/calib3d/calib3d.hpp>
 #include <opencv2/core/eigen.hpp>
 #include <opencv2/imgproc/imgproc.hpp>
-
 #include "camodocal/gpl/gpl.h"
 
 namespace camodocal {
@@ -19,13 +31,20 @@ float ApproxAtan2(float y, float x)
     const float n1 = 0.97239411f;
     const float n2 = -0.19194795f;
     float result = 0.0f;
-    if (x != 0.0f)
+    if (x != 0.0f) {
-    {
+        const union {
-        const union { float flVal; std::uint32_t nVal; } tYSign = { y };
+            float flVal;
-        const union { float flVal; std::uint32_t nVal; } tXSign = { x };
+            std::uint32_t nVal;
-        if (fabsf(x) >= fabsf(y))
+        } tYSign = { y };
-        {
+        const union {
-            union { float flVal; std::uint32_t nVal; } tOffset = { PI };
+            float flVal;
+            std::uint32_t nVal;
+        } tXSign = { x };
+        if (fabsf(x) >= fabsf(y)) {
+          union {
+              float flVal;
+              std::uint32_t nVal;
+          } tOffset = { PI };
           // Add or subtract PI based on y's sign.
           tOffset.nVal |= tYSign.nVal & 0x80000000u;
           // No offset if x is positive, so multiply by 0 or based on x's sign.
@@ -33,23 +52,20 @@ float ApproxAtan2(float y, float x)
           result = tOffset.flVal;
           const float z = y / x;
           result += (n1 + n2 * z * z) * z;
-        }
+        } else {  // Use atan(y/x) = pi/2 - atan(x/y) if |y/x| > 1. n
-        else // Use atan(y/x) = pi/2 - atan(x/y) if |y/x| > 1.
+          union {
-        {
+              float flVal;
-            union { float flVal; std::uint32_t nVal; } tOffset = { PI_2 };
+              std::uint32_t nVal;
+          } tOffset = { PI_2 };
           // Add or subtract PI/2 based on y's sign.
           tOffset.nVal |= tYSign.nVal & 0x80000000u;
           result = tOffset.flVal;
           const float z = x / y;
           result -= (n1 + n2 * z * z) * z;
         }
-    }
+    } else if (y > 0.0f) {
-    else if (y > 0.0f)
-    {
         result = PI_2;
-    }
+    } else if (y < 0.0f) {
-    else if (y < 0.0f)
-    {
         result = -PI_2;
     }
     return result;
@@ -143,60 +159,6 @@ double EquidistantCamera::Parameters::v0(void) const {
   return m_v0;
 }
 
-bool EquidistantCamera::Parameters::readFromYamlFile(
-    const std::string &filename) {
-  cv::FileStorage fs(filename, cv::FileStorage::READ);
-
-  if (!fs.isOpened()) {
-    return false;
-  }
-
-  if (!fs["model_type"].isNone()) {
-    std::string sModelType;
-    fs["model_type"] >> sModelType;
-
-    if (sModelType.compare("KANNALA_BRANDT") != 0) {
-      return false;
-    }
-  }
-
-  m_modelType = KANNALA_BRANDT;
-  fs["camera_name"] >> m_cameraName;
-  m_imageWidth = static_cast<int>(fs["image_width"]);
-  m_imageHeight = static_cast<int>(fs["image_height"]);
-
-  cv::FileNode n = fs["projection_parameters"];
-  m_k2 = static_cast<double>(n["k2"]);
-  m_k3 = static_cast<double>(n["k3"]);
-  m_k4 = static_cast<double>(n["k4"]);
-  m_k5 = static_cast<double>(n["k5"]);
-  m_mu = static_cast<double>(n["mu"]);
-  m_mv = static_cast<double>(n["mv"]);
-  m_u0 = static_cast<double>(n["u0"]);
-  m_v0 = static_cast<double>(n["v0"]);
-
-  return true;
-}
-
-void EquidistantCamera::Parameters::writeToYamlFile(
-    const std::string &filename) const {
-  cv::FileStorage fs(filename, cv::FileStorage::WRITE);
-
-  fs << "model_type"
-     << "KANNALA_BRANDT";
-  fs << "camera_name" << m_cameraName;
-  fs << "image_width" << m_imageWidth;
-  fs << "image_height" << m_imageHeight;
-
-  // projection: k2, k3, k4, k5, mu, mv, u0, v0
-  fs << "projection_parameters";
-  fs << "{"
-     << "k2" << m_k2 << "k3" << m_k3 << "k4" << m_k4 << "k5" << m_k5 << "mu"
-     << m_mu << "mv" << m_mv << "u0" << m_u0 << "v0" << m_v0 << "}";
-
-  fs.release();
-}
-
 EquidistantCamera::Parameters &EquidistantCamera::Parameters::operator=(
     const EquidistantCamera::Parameters &other) {
   if (this != &other) {
@@ -313,7 +275,7 @@ void EquidistantCamera::estimateIntrinsics(
   double f0 = 0.0;
   for (size_t i = 0; i < imagePoints.size(); ++i) {
     std::vector<Eigen::Vector2d> center(boardSize.height);
-    double radius[boardSize.height];
+    double radius[boardSize.height];  // NOLINT
     for (int r = 0; r < boardSize.height; ++r) {
       std::vector<cv::Point2d> circle;
       for (int c = 0; c < boardSize.width; ++c) {
@@ -373,17 +335,6 @@ void EquidistantCamera::estimateIntrinsics(
   setParameters(params);
 }
 
-/**
- * \brief Lifts a point from the image plane to the unit sphere
- *
- * \param p image coordinates
- * \param P coordinates of the point on the sphere
- */
-void EquidistantCamera::liftSphere(
-    const Eigen::Vector2d &p, Eigen::Vector3d &P) const {
-  liftProjective(p, P);
-}
-
 /**
  * \brief Lifts a point from the image plane to its projective ray
  *
@@ -453,33 +404,6 @@ void EquidistantCamera::spaceToPlane(
       mParameters.mv() * p_u(1) + mParameters.v0();
 }
 
-/**
- * \brief Projects an undistorted 2D point p_u to the image plane
- *
- * \param p_u 2D point coordinates
- * \return image point coordinates
- */
-void EquidistantCamera::undistToPlane(
-    const Eigen::Vector2d &p_u, Eigen::Vector2d &p) const {
-  //    Eigen::Vector2d p_d;
-  //
-  //    if (m_noDistortion)
-  //    {
-  //        p_d = p_u;
-  //    }
-  //    else
-  //    {
-  //        // Apply distortion
-  //        Eigen::Vector2d d_u;
-  //        distortion(p_u, d_u);
-  //        p_d = p_u + d_u;
-  //    }
-  //
-  //    // Apply generalised projection matrix
-  //    p << mParameters.gamma1() * p_d(0) + mParameters.u0(),
-  //         mParameters.gamma2() * p_d(1) + mParameters.v0();
-}
-
 void EquidistantCamera::initUndistortMap(
     cv::Mat &map1, cv::Mat &map2, double fScale) const {
   cv::Size imageSize(mParameters.imageWidth(), mParameters.imageHeight());
@@ -613,11 +537,6 @@ void EquidistantCamera::writeParameters(
   parameterVec.at(7) = mParameters.v0();
 }
 
-void EquidistantCamera::writeParametersToYamlFile(
-    const std::string &filename) const {
-  mParameters.writeToYamlFile(filename);
-}
-
 std::string EquidistantCamera::parametersToString(void) const {
   std::ostringstream oss;
   oss << mParameters;
@@ -730,4 +649,4 @@ void EquidistantCamera::backprojectSymmetric(
     }
   }
 }
-}
+}  // namespace camodocal

src/mynteye/api/camodocal/src/gpl/gpl.cc

@@ -1,3 +1,16 @@
+// Copyright 2018 Slightech Co., Ltd. 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.
 #include "camodocal/gpl/gpl.h"
 
 #include <set>
@@ -112,15 +125,15 @@ int clock_gettime(int X, struct timespec *tp) {
     if (usePerformanceCounter) {
       QueryPerformanceCounter(&offset);
       frequencyToMicroseconds =
-          (double)performanceFrequency.QuadPart / 1000000.;
+      static_cast<double>(performanceFrequency.QuadPart / 1000000.);
     } else {
       offset = getFILETIMEoffset();
       frequencyToMicroseconds = 10.;
     }
   }
-  if (usePerformanceCounter)
+  if (usePerformanceCounter) {
     QueryPerformanceCounter(&t);
-  else {
+  } else {
     GetSystemTimeAsFileTime(&f);
     t.QuadPart = f.dwHighDateTime;
     t.QuadPart <<= 32;
@@ -128,7 +141,7 @@ int clock_gettime(int X, struct timespec *tp) {
   }
 
   t.QuadPart -= offset.QuadPart;
-  microseconds = (double)t.QuadPart / frequencyToMicroseconds;
+  microseconds = static_cast<double>(t.QuadPart / frequencyToMicroseconds);
   t.QuadPart = microseconds;
   tp->tv_sec = t.QuadPart / 1000000;
   tp->tv_nsec = (t.QuadPart % 1000000) * 1000;
@@ -136,7 +149,7 @@ int clock_gettime(int X, struct timespec *tp) {
 }
 #endif
 
-unsigned long long timeInMicroseconds(void) {
+unsigned long long timeInMicroseconds(void) {  // NOLINT
   struct timespec tp;
 #ifdef __APPLE__
   tp = orwl_gettime();
@@ -271,7 +284,7 @@ float colormapJet[128][3] = {
     {0.53125f, 0.0f, 0.0f},     {0.5f, 0.0f, 0.0f}};
 
 void colorDepthImage(
-    cv::Mat &imgDepth, cv::Mat &imgColoredDepth, float minRange,
+    cv::Mat &imgDepth, cv::Mat &imgColoredDepth, float minRange,  // NOLINT
     float maxRange) {
   imgColoredDepth = cv::Mat::zeros(imgDepth.size(), CV_8UC3);
 
@@ -295,7 +308,7 @@ void colorDepthImage(
 }
 
 bool colormap(
-    const std::string &name, unsigned char idx, float &r, float &g, float &b) {
+    const std::string &name, unsigned char idx, float &r, float &g, float &b) {  // NOLINT
   if (name.compare("jet") == 0) {
     float *color = colormapJet[idx];
 
@@ -434,8 +447,8 @@ std::vector<cv::Point2i> bresCircle(int x0, int y0, int r) {
 }
 
 void fitCircle(
-    const std::vector<cv::Point2d> &points, double &centerX, double &centerY,
+    const std::vector<cv::Point2d> &points, double &centerX, double &centerY,  // NOLINT
-    double &radius) {
+    double &radius) {  // NOLINT
   // D. Umbach, and K. Jones, A Few Methods for Fitting Circles to Data,
   // IEEE Transactions on Instrumentation and Measurement, 2000
   // We use the modified least squares method.
@@ -573,8 +586,8 @@ char UTMLetterDesignator(double latitude) {
 }
 
 void LLtoUTM(
-    double latitude, double longitude, double &utmNorthing, double &utmEasting,
+    double latitude, double longitude, double &utmNorthing, double &utmEasting,  // NOLINT
-    std::string &utmZone) {
+    std::string &utmZone) {  // NOLINT
   // converts lat/long to UTM coords.  Equations from USGS Bulletin 1532
   // East Longitudes are positive, West longitudes are negative.
   // North latitudes are positive, South latitudes are negative
@@ -659,7 +672,7 @@ void LLtoUTM(
 
 void UTMtoLL(
     double utmNorthing, double utmEasting, const std::string &utmZone,
-    double &latitude, double &longitude) {
+    double &latitude, double &longitude) {  // NOLINT
   // converts UTM coords to lat/long.  Equations from USGS Bulletin 1532
   // East Longitudes are positive, West longitudes are negative.
   // North latitudes are positive, South latitudes are negative
@@ -732,22 +745,22 @@ void UTMtoLL(
   longitude = LongOrigin + longitude / M_PI * 180.0;
 }
 
-long int timestampDiff(uint64_t t1, uint64_t t2) {
+long int timestampDiff(uint64_t t1, uint64_t t2) {  // NOLINT
   if (t2 > t1) {
     uint64_t d = t2 - t1;
 
-    if (d > std::numeric_limits<long int>::max()) {
+    if (d > std::numeric_limits<long int>::max()) {  // NOLINT
-      return std::numeric_limits<long int>::max();
+      return std::numeric_limits<long int>::max();  // NOLINT
     } else {
       return d;
     }
   } else {
     uint64_t d = t1 - t2;
 
-    if (d > std::numeric_limits<long int>::max()) {
+    if (d > std::numeric_limits<long int>::max()) {  // NOLINT
-      return std::numeric_limits<long int>::min();
+      return std::numeric_limits<long int>::min();  // NOLINT
     } else {
-      return -static_cast<long int>(d);
+      return -static_cast<long int>(d);  // NOLINT
     }
   }
 }