Fix gcc7 warnings

modules/ccalib/src/multicalib.cpp

@@ -749,12 +749,12 @@ void MultiCameraCalibration::writeParameters(const std::string& filename)
 
     for (int camIdx = 0; camIdx < _nCamera; ++camIdx)
     {
-        char num[10];
-        sprintf(num, "%d", camIdx);
-        std::string cameraMatrix = "camera_matrix_" + std::string(num);
-        std::string cameraPose = "camera_pose_" + std::string(num);
-        std::string cameraDistortion = "camera_distortion_" + std::string(num);
-        std::string cameraXi = "xi_" + std::string(num);
+        std::stringstream tmpStr;
+        tmpStr << camIdx;
+        std::string cameraMatrix = "camera_matrix_" + tmpStr.str();
+        std::string cameraPose = "camera_pose_" + tmpStr.str();
+        std::string cameraDistortion = "camera_distortion_" + tmpStr.str();
+        std::string cameraXi = "xi_" + tmpStr.str();
 
         fs << cameraMatrix << _cameraMatrix[camIdx];
         fs << cameraDistortion << _distortCoeffs[camIdx];
@@ -770,9 +770,9 @@ void MultiCameraCalibration::writeParameters(const std::string& filename)
 
     for (int photoIdx = _nCamera; photoIdx < (int)_vertexList.size(); ++photoIdx)
     {
-        char timestamp[100];
-        sprintf(timestamp, "%d", _vertexList[photoIdx].timestamp);
-        std::string photoTimestamp = "pose_timestamp_" + std::string(timestamp);
+        std::stringstream tmpStr;
+        tmpStr << _vertexList[photoIdx].timestamp;
+        std::string photoTimestamp = "pose_timestamp_" + tmpStr.str();
 
         fs << photoTimestamp << _vertexList[photoIdx].pose;
     }

modules/line_descriptor/include/opencv2/line_descriptor/descriptor.hpp

@@ -401,6 +401,12 @@ class CV_EXPORTS BinaryDescriptor : public Algorithm
     unsigned int octaveCount;
     //the decriptor of line
     std::vector<float> descriptor;
+
+    OctaveSingleLine() : startPointX(0), startPointY(0), endPointX(0), endPointY(0),
+        sPointInOctaveX(0), sPointInOctaveY(0), ePointInOctaveX(0), ePointInOctaveY(0),
+        direction(0), salience(0), lineLength(0), numOfPixels(0), octaveCount(0),
+        descriptor(std::vector<float>())
+    {}
   };
 
   struct Pixel

modules/stereo/include/opencv2/stereo/matching.hpp

@@ -44,11 +44,11 @@
 *   The interface contains the main methods for computing the matching between the left and right images	      *
 *                                                                                                                 *
 \******************************************************************************************************************/
-#include <stdint.h>
-
 #ifndef _OPENCV_MATCHING_HPP_
 #define _OPENCV_MATCHING_HPP_
-#ifdef __cplusplus
+
+#include <stdint.h>
+#include "opencv2/core.hpp"
 
 namespace cv
 {
@@ -423,7 +423,6 @@ namespace cv
             //preprocessing the cost volume in order to get it ready for aggregation
             void costGathering(const Mat &hammingDistanceCost, Mat &cost)
             {
-                CV_Assert(hammingDistanceCost.rows == hammingDistanceCost.rows);
                 CV_Assert(hammingDistanceCost.type() == CV_16S);
                 CV_Assert(cost.type() == CV_16S);
                 int maxDisp = maxDisparity;
@@ -620,5 +619,4 @@ namespace cv
     }
 }
 #endif
-#endif
 /*End of file*/

modules/stereo/test/test_block_matching.cpp

@@ -97,7 +97,7 @@ void CV_BlockMatchingTest::run(int )
         ts->set_failed_test_info(cvtest::TS::FAIL_INVALID_TEST_DATA);
         return;
     }
-    if(image1.rows != image2.rows || image1.cols != image2.cols || gt.cols != gt.cols || gt.rows != gt.rows)
+    if(image1.rows != image2.rows || image1.cols != image2.cols || gt.cols != image1.cols || gt.rows != image1.rows)
     {
         ts->printf(cvtest::TS::LOG, "Wrong input / output dimension \n");
         ts->set_failed_test_info(cvtest::TS::FAIL_INVALID_TEST_DATA);
@@ -181,7 +181,7 @@ void CV_SGBlockMatchingTest::run(int )
         ts->set_failed_test_info(cvtest::TS::FAIL_INVALID_TEST_DATA);
         return;
     }
-    if(image1.rows != image2.rows || image1.cols != image2.cols || gt.cols != gt.cols || gt.rows != gt.rows)
+    if(image1.rows != image2.rows || image1.cols != image2.cols || gt.cols != image1.cols || gt.rows != image1.rows)
     {
         ts->printf(cvtest::TS::LOG, "Wrong input / output dimension \n");
         ts->set_failed_test_info(cvtest::TS::FAIL_INVALID_TEST_DATA);

modules/xfeatures2d/src/harris_lapace_detector.cpp

@@ -21,7 +21,6 @@ protected:
     {
     public:
         std::vector<Mat> layers;
-        Octave();
         Octave(std::vector<Mat> layers);
         virtual ~Octave();
         std::vector<Mat> getLayers();
@@ -33,10 +32,8 @@ protected:
     public:
         std::vector<Mat> layers;
 
-        DOGOctave();
         DOGOctave(std::vector<Mat> layers);
         virtual ~DOGOctave();
-        std::vector<Mat> getLayers();
         Mat getLayerAt(int i);
     };
 
@@ -53,30 +50,21 @@ public:
         float sigma0;
         int omin;
         float step;
-        Params();
         Params(int octavesN, int layersN, float sigma0, int omin);
         void clear();
     };
     Params params;
 
-    Pyramid();
     Pyramid(const Mat& img, int octavesN, int layersN = 2, float sigma0 = 1, int omin = 0,
             bool DOG = false);
     Mat getLayer(int octave, int layer);
     Mat getDOGLayer(int octave, int layer);
-    float getSigma(int octave, int layer);
     float getSigma(int layer);
 
     virtual ~Pyramid();
-    Params getParams();
     void clear();
-    bool empty();
 };
 
-Pyramid::Pyramid()
-{
-}
-
 /**
  * Pyramid class constructor
  * octavesN_: number of octaves
@@ -234,15 +222,6 @@ Mat Pyramid::getDOGLayer(int octave, int layer)
     return DOG_octaves[octave].getLayerAt(layer);
 }
 
-/**
- * Return sigma value of indicated octave and layer
- */
-float Pyramid::getSigma(int octave, int layer)
-{
-
-    return powf(2.0f, float(octave)) * powf(params.step, float(layer)) * params.sigma0;
-}
-
 /**
  * Return sigma value of indicated layer
  * sigma value of layer is the same at each octave
@@ -271,19 +250,6 @@ void Pyramid::clear()
     params.clear();
 }
 
-/**
- * Empty Pyramid
- * @return
- */
-bool Pyramid::empty()
-{
-    return octaves.empty();
-}
-
-Pyramid::Params::Params()
-{
-}
-
 /**
  * Params for Pyramid class
  *
@@ -295,14 +261,6 @@ Pyramid::Params::Params(int octavesN_, int layersN_, float sigma0_, int omin_) :
     step = powf(2, 1.0f / layersN);
 }
 
-/**
- * Returns Pyramid's params
- */
-Pyramid::Params Pyramid::getParams()
-{
-    return params;
-}
-
 /**
  * Set to zero all params
  */
@@ -328,10 +286,6 @@ std::vector<Mat> Pyramid::Octave::getLayers()
     return layers;
 }
 
-Pyramid::Octave::Octave()
-{
-}
-
 /**
  * Return the Octave's layer at index i
  */
@@ -345,21 +299,12 @@ Pyramid::Octave::~Octave()
 {
 }
 
-Pyramid::DOGOctave::DOGOctave()
-{
-}
-
 Pyramid::DOGOctave::DOGOctave(std::vector<Mat> _layers) : layers(_layers) {}
 
 Pyramid::DOGOctave::~DOGOctave()
 {
 }
 
-std::vector<Mat> Pyramid::DOGOctave::getLayers()
-{
-    return layers;
-}
-
 Mat Pyramid::DOGOctave::getLayerAt(int i)
 {
     CV_Assert(i < (int) layers.size());