diff --git a/modules/flann/include/opencv2/flann/general.h b/modules/flann/include/opencv2/flann/general.h
index 17a84922fc..078ff1617e 100644
--- a/modules/flann/include/opencv2/flann/general.h
+++ b/modules/flann/include/opencv2/flann/general.h
@@ -122,8 +122,9 @@ class FLANNException : public std::runtime_error {
 struct CV_EXPORTS IndexParams {
 protected:
 	IndexParams(flann_algorithm_t algorithm_) : algorithm(algorithm_) {};
-
+	
 public:
+	virtual ~IndexParams() {}
 	virtual flann_algorithm_t getIndexType() const = 0;
 
 	virtual void print() const = 0;
diff --git a/modules/imgproc/src/approx.cpp b/modules/imgproc/src/approx.cpp
index dbc253faf3..fe86df3b4c 100644
--- a/modules/imgproc/src/approx.cpp
+++ b/modules/imgproc/src/approx.cpp
@@ -591,7 +591,7 @@ icvApproxPolyDP( CvSeq* src_contour, int header_size,
             for( i = slice.start_index + 1; i < slice.end_index; i++ )
             {
                 CV_READ_SEQ_ELEM( pt, reader );
-                dist = abs((pt.y - start_pt.y) * dx - (pt.x - start_pt.x) * dy);
+                dist = fabs((pt.y - start_pt.y) * dx - (pt.x - start_pt.x) * dy);
 
                 if( dist > max_dist )
                 {
@@ -647,7 +647,7 @@ icvApproxPolyDP( CvSeq* src_contour, int header_size,
 
         dx = end_pt.x - start_pt.x;
         dy = end_pt.y - start_pt.y;
-        dist = abs((pt.x - start_pt.x)*dy - (pt.y - start_pt.y)*dx);
+        dist = fabs((pt.x - start_pt.x)*dy - (pt.y - start_pt.y)*dx);
         if( dist * dist <= 0.5*eps*(dx*dx + dy*dy) && dx != 0 && dy != 0 )
         {
             new_count--;
diff --git a/modules/objdetect/src/_latentsvm.h b/modules/objdetect/src/_latentsvm.h
index e7cfc9c951..c3368c2ee2 100644
--- a/modules/objdetect/src/_latentsvm.h
+++ b/modules/objdetect/src/_latentsvm.h
@@ -2,8 +2,8 @@
 /*                      Latent SVM prediction API                            */
 /*****************************************************************************/
 
-#ifndef SVM_LATENTSVM
-#define SVM_LATENTSVM
+#ifndef _LATENTSVM_H_
+#define _LATENTSVM_H_
 
 #include <stdio.h>
 #include "_lsvm_types.h"
@@ -397,4 +397,4 @@ int showBoxes(IplImage *img,
               const CvPoint *points, const CvPoint *oppositePoints, int kPoints, 
               CvScalar color, int thickness, int line_type, int shift);
 
-#endif
\ No newline at end of file
+#endif
diff --git a/modules/objdetect/src/_lsvm_distancetransform.h b/modules/objdetect/src/_lsvm_distancetransform.h
index 7d80c158e3..3ec6a96f03 100644
--- a/modules/objdetect/src/_lsvm_distancetransform.h
+++ b/modules/objdetect/src/_lsvm_distancetransform.h
@@ -1,5 +1,5 @@
-#ifndef LSVM_DIST_TRANSFORM
-#define LSVM_DIST_TRANSFORM
+#ifndef _LSVM_DIST_TRANSFORM_H_
+#define _LSVM_DIST_TRANSFORM_H_
 
 #include "_lsvm_types.h"
 #include "_lsvm_error.h"
@@ -135,4 +135,4 @@ int DistanceTransformTwoDimensionalProblem(const float *f,
                                            float *distanceTransform,
                                            int *pointsX, int *pointsY); 
 
-#endif
\ No newline at end of file
+#endif
diff --git a/modules/objdetect/src/_lsvm_fft.h b/modules/objdetect/src/_lsvm_fft.h
index 790bfb86be..83af8bc255 100644
--- a/modules/objdetect/src/_lsvm_fft.h
+++ b/modules/objdetect/src/_lsvm_fft.h
@@ -1,5 +1,5 @@
-#ifndef _LSVM_FFT_H
-#define _LSVM_FFT_H
+#ifndef _LSVM_FFT_H_
+#define _LSVM_FFT_H_
 
 #include "_lsvm_types.h"
 #include "_lsvm_error.h"
@@ -76,4 +76,4 @@ int fft2d(float *x_in, float *x_out, int numRows, int numColls);
 */
 int fftInverse2d(float *x_in, float *x_out, int numRows, int numColls);
 
-#endif
\ No newline at end of file
+#endif
diff --git a/modules/objdetect/src/_lsvm_matching.h b/modules/objdetect/src/_lsvm_matching.h
index 2c60ceedaa..1b51fc5f1f 100644
--- a/modules/objdetect/src/_lsvm_matching.h
+++ b/modules/objdetect/src/_lsvm_matching.h
@@ -2,8 +2,8 @@
 /*                      Matching procedure API                               */
 /*****************************************************************************/
 //
-#ifndef SVM_MATCHING
-#define SVM_MATCHING
+#ifndef _LSVM_MATCHING_H_
+#define _LSVM_MATCHING_H_
 
 #include "_latentsvm.h"
 #include "_lsvm_error.h"
diff --git a/modules/objdetect/src/_lsvm_resizeimg.h b/modules/objdetect/src/_lsvm_resizeimg.h
index f0ac6c756c..c6ebc53357 100644
--- a/modules/objdetect/src/_lsvm_resizeimg.h
+++ b/modules/objdetect/src/_lsvm_resizeimg.h
@@ -1,5 +1,5 @@
-#ifndef RESIZEIMG
-#define RESIZEIMG
+#ifndef _LSVM_RESIZEIMG_H_
+#define _LSVM_RESIZEIMG_H_
 
 #include "_lsvm_types.h"
 
@@ -7,4 +7,4 @@ IplImage * resize_opencv (IplImage * img, float scale);
 IplImage * resize_article_dp1(IplImage * img, float scale, const int k);
 IplImage * resize_article_dp(IplImage * img, float scale, const int k);
 
-#endif
\ No newline at end of file
+#endif
diff --git a/modules/objdetect/src/_lsvm_routine.h b/modules/objdetect/src/_lsvm_routine.h
index 815389da84..2249d3c769 100644
--- a/modules/objdetect/src/_lsvm_routine.h
+++ b/modules/objdetect/src/_lsvm_routine.h
@@ -1,5 +1,5 @@
-#ifndef _LSVM_ROUTINE_H
-#define _LSVM_ROUTINE_H
+#ifndef _LSVM_ROUTINE_H_
+#define _LSVM_ROUTINE_H_
 
 #include "_lsvm_types.h"
 #include "_lsvm_error.h"
@@ -32,4 +32,4 @@ extern "C"
 int freeFeaturePyramidObject (CvLSVMFeaturePyramid **obj);
 int allocFFTImage(CvLSVMFftImage **image, int p, int dimX, int dimY);
 int freeFFTImage(CvLSVMFftImage **image);
-#endif
\ No newline at end of file
+#endif
diff --git a/modules/objdetect/src/distancetransform.cpp b/modules/objdetect/src/distancetransform.cpp
index 968bc254ce..cb81a1b660 100644
--- a/modules/objdetect/src/distancetransform.cpp
+++ b/modules/objdetect/src/distancetransform.cpp
@@ -7,6 +7,7 @@
 //      a(y - q1) + b(q1 - y)(q1 - y) + f[q1]
 //      a(y - q2) + b(q2 - y)(q2 - y) + f[q2]
 //
+//
 // API
 // int GetPointOfIntersection(const float *f, 
                               const float a, const float b,           
@@ -393,4 +394,4 @@ int DistanceTransformTwoDimensionalProblem(const float *f,
     free(internalDistTrans);
     free(internalPointsX);
     return DISTANCE_TRANSFORM_OK;
-}
\ No newline at end of file
+}
diff --git a/modules/objdetect/src/featurepyramid.cpp b/modules/objdetect/src/featurepyramid.cpp
index e5e314c8e9..f5d4c51f0e 100644
--- a/modules/objdetect/src/featurepyramid.cpp
+++ b/modules/objdetect/src/featurepyramid.cpp
@@ -10,7 +10,7 @@
 #define min(a,b)            (((a) < (b)) ? (a) : (b))
 #endif
 
-int sign(float r){
+static inline int sign(float r){
     if(r >  0.0001f) return  1;
     if(r < -0.0001f) return -1;
     return 0;
@@ -574,4 +574,4 @@ int addBordersToFeatureMaps(CvLSVMFeatureMap *map, const int bX, const int bY){
     map->Map = new_data;
 
     return LATENT_SVM_OK;
-}
\ No newline at end of file
+}
diff --git a/modules/objdetect/src/latentsvmdetector.cpp b/modules/objdetect/src/latentsvmdetector.cpp
index f0f1d79590..34a1a493e8 100644
--- a/modules/objdetect/src/latentsvmdetector.cpp
+++ b/modules/objdetect/src/latentsvmdetector.cpp
@@ -9,7 +9,7 @@
 // CvLatentSvmDetector* cvLoadLatentSvmDetector(const char* filename);
 // INPUT
 // filename				- path to the file containing the parameters of
-						- trained Latent SVM detector
+//						- trained Latent SVM detector
 // OUTPUT
 // trained Latent SVM detector in internal representation
 */
@@ -133,4 +133,4 @@ CvSeq* cvLatentSvmDetectObjects(IplImage* image,
     free(score);
 
 	return result_seq;
-}
\ No newline at end of file
+}
diff --git a/modules/objdetect/src/lsvmparser.cpp b/modules/objdetect/src/lsvmparser.cpp
index 30f05914c1..4973f25d71 100644
--- a/modules/objdetect/src/lsvmparser.cpp
+++ b/modules/objdetect/src/lsvmparser.cpp
@@ -803,6 +803,5 @@ int loadModel(
     }
     (*kPartFilters)[0] = comp[0];
 
-    //printf("end_parse\n");
     return 0;
-}
\ No newline at end of file
+}
diff --git a/modules/objdetect/src/matching.cpp b/modules/objdetect/src/matching.cpp
index 94170f9ef1..a49144cc04 100644
--- a/modules/objdetect/src/matching.cpp
+++ b/modules/objdetect/src/matching.cpp
@@ -256,7 +256,7 @@ int convFFTConv2d(const CvLSVMFftImage *featMapImage, const CvLSVMFftImage *filt
     imagesMultRes = (float *)malloc(sizeof(float) * size);
     fftImagesMulti(featMapImage->channels[0], filterImage->channels[0], 
             featMapImage->dimY, featMapImage->dimX, imagesMultRes);
-    for (i = 1; (i < featMapImage->p) && (i < filterImage->p); i++)
+    for (i = 1; (i < (int)featMapImage->p) && (i < (int)filterImage->p); i++)
     {
         fftImagesMulti(featMapImage->channels[i],filterImage->channels[i], 
             featMapImage->dimY, featMapImage->dimX, imagesMult);
@@ -1460,4 +1460,4 @@ int nonMaximumSuppression(int numBoxes, const CvPoint *points,
 	free(is_suppressed);
 
 	return LATENT_SVM_OK;
-}
\ No newline at end of file
+}
diff --git a/modules/objdetect/src/resizeimg.cpp b/modules/objdetect/src/resizeimg.cpp
index 1025829533..ac3ca348b1 100644
--- a/modules/objdetect/src/resizeimg.cpp
+++ b/modules/objdetect/src/resizeimg.cpp
@@ -4,7 +4,6 @@
 #include <assert.h>
 #include <math.h>
 
-
 IplImage * resize_opencv (IplImage * img, float scale){
     IplImage * imgTmp;
 
@@ -241,4 +240,5 @@ IplImage * resize_opencv (IplImage * img, float scale){
 //    free(dst);
 //    free(tmp);
 //    return imgTmp;
-//}
\ No newline at end of file
+//}
+//
diff --git a/modules/objdetect/src/routine.cpp b/modules/objdetect/src/routine.cpp
index fbf8d98f1f..256aa9e24c 100644
--- a/modules/objdetect/src/routine.cpp
+++ b/modules/objdetect/src/routine.cpp
@@ -91,7 +91,7 @@ int allocFFTImage(CvLSVMFftImage **image, int p, int dimX, int dimY)
 
 int freeFFTImage(CvLSVMFftImage **image)
 {
-    unsigned int i;
+    unsigned i;
     if (*image == NULL) return LATENT_SVM_OK;
     for (i = 0; i < (*image)->p; i++)
     {
@@ -101,4 +101,4 @@ int freeFFTImage(CvLSVMFftImage **image)
     free((*image)->channels);
     (*image)->channels = NULL;
     return LATENT_SVM_OK;
-}
\ No newline at end of file
+}