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Grid map: added "erode" option

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Mathieu Labbe
2015-03-20 14:03:09 -04:00
parent 722268a95c
commit ad6ee69ac6
8 changed files with 153 additions and 30 deletions
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54
corelib/src/util3d.cpp
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@@ -2100,6 +2100,8 @@ void occupancy2DFromLaserScan(
* @param cellSize m
* @param xMin
* @param yMin
* @param minMapSize minimum width (m)
* @param erode
*/
cv::Mat create2DMapFromOccupancyLocalMaps(
const std::map<int, Transform> & poses,
@@ -2107,10 +2109,11 @@ cv::Mat create2DMapFromOccupancyLocalMaps(
float cellSize,
float & xMin,
float & yMin,
float minMapSize)
float minMapSize,
bool erode)
{
UASSERT(minMapSize >= 0.0f);
UDEBUG("");
UDEBUG("cellSize=%f m, minMapSize=%f m, erode=%d", cellSize, minMapSize, erode?1:0);
UTimer timer;
std::map<int, cv::Mat> emptyLocalMaps;
@@ -2248,7 +2251,8 @@ cv::Mat create2DMapFromOccupancyLocalMaps(
}
// fill holes and remove empty from obstacle borders
cv::Mat updatedMap = map;
cv::Mat updatedMap = map.clone();
std::list<std::pair<int, int> > obstacleIndices;
for(int i=2; i<map.rows-2; ++i)
{
for(int j=2; j<map.cols-2; ++j)
@@ -2285,11 +2289,55 @@ cv::Mat create2DMapFromOccupancyLocalMaps(
{
updatedMap.at<char>(i, j+1) = -1;
}
if(erode)
{
obstacleIndices.push_back(std::make_pair(i, j));
}
}
else if(map.at<char>(i, j) == 0)
{
// obstacle/empty/obstacle -> remove empty
if(map.at<char>(i-1, j) == 100 &&
map.at<char>(i+1, j) == 100)
{
updatedMap.at<char>(i, j) = -1;
}
else if(map.at<char>(i, j-1) == 100 &&
map.at<char>(i, j+1) == 100)
{
updatedMap.at<char>(i, j) = -1;
}
}
}
}
map = updatedMap;
if(erode)
{
// remove obstacles which touch to empty cells but not unknown cells
cv::Mat erodedMap = map.clone();
for(std::list<std::pair<int,int> >::iterator iter = obstacleIndices.begin();
iter!= obstacleIndices.end();
++iter)
{
int i = iter->first;
int j = iter->second;
bool touchEmpty = map.at<char>(i+1, j) == 0 ||
map.at<char>(i-1, j) == 0 ||
map.at<char>(i, j+1) == 0 ||
map.at<char>(i, j-1) == 0;
if(touchEmpty && map.at<char>(i+1, j) != -1 &&
map.at<char>(i-1, j) != -1 &&
map.at<char>(i, j+1) != -1 &&
map.at<char>(i, j-1) != -1)
{
erodedMap.at<char>(i, j) = 0; // empty
}
}
map = erodedMap;
}
}
}
UDEBUG("timer=%fs", timer.ticks());