message: samples: openni_capture - use COLORMAP_JET for depth visualization
  instead of an ad-hoc implementation of it
diff: @@ -26,7 +26,7 @@ static void help()
  << endl;
  }
  -static void colorizeDisparity( const Mat& gray, Mat& rgb, double maxDisp=-1.f, float S=1.f, float V=1.f )
  +static void colorizeDisparity( const Mat& gray, Mat& rgb, double maxDisp=-1.f)
  {
  CV_Assert( !gray.empty() );
  CV_Assert( gray.type() == CV_8UC1 );
  @@ -42,41 +42,9 @@ static void colorizeDisparity( const Mat& gray, Mat& rgb, double maxDisp=-1.f, f
  if( maxDisp < 1 )
  return;
  - for( int y = 0; y < gray.rows; y++ )
  - {
  - for( int x = 0; x < gray.cols; x++ )
  - {
  - uchar d = gray.at<uchar>(y,x);
  - unsigned int H = ((uchar)maxDisp - d) * 240 / (uchar)maxDisp;
  -
  - unsigned int hi = (H/60) % 6;
  - float f = H/60.f - H/60;
  - float p = V * (1 - S);
  - float q = V * (1 - f * S);
  - float t = V * (1 - (1 - f) * S);
  -
  - Point3f res;
  -
  - if( hi == 0 ) //R = V, G = t, B = p
  - res = Point3f( p, t, V );
  - if( hi == 1 ) // R = q, G = V, B = p
  - res = Point3f( p, V, q );
  - if( hi == 2 ) // R = p, G = V, B = t
  - res = Point3f( t, V, p );
  - if( hi == 3 ) // R = p, G = q, B = V
  - res = Point3f( V, q, p );
  - if( hi == 4 ) // R = t, G = p, B = V
  - res = Point3f( V, p, t );
  - if( hi == 5 ) // R = V, G = p, B = q
  - res = Point3f( q, p, V );
  -
  - uchar b = (uchar)(std::max(0.f, std::min (res.x, 1.f)) * 255.f);
  - uchar g = (uchar)(std::max(0.f, std::min (res.y, 1.f)) * 255.f);
  - uchar r = (uchar)(std::max(0.f, std::min (res.z, 1.f)) * 255.f);
  -
  - rgb.at<Point3_<uchar> >(y,x) = Point3_<uchar>(b, g, r);
  - }
  - }
  + Mat tmp;
  + convertScaleAbs(gray, tmp, 255.f / maxDisp);
  + applyColorMap(tmp, rgb, COLORMAP_JET);
  }
  static float getMaxDisparity( VideoCapture& capture )
  