00001 #include "EdgeDetection/MicroEdgeMap.h"
00002
00003 #include "EdgeDetection/EdgeImage.h"
00004 #include "EdgeDetection/Image.h"
00005
00006 namespace EdgeDetection
00007 {
00008 Edge MicroEdgeMap::FindRealEdge(Edge measuredEdge)
00009 {
00010 Edge bestEdge = Edge(0, 0);
00011 Edge bestEdgeMeasured = MeasureEdge(bestEdge);
00012
00013 for (size_t index = 0; index < entries.size(); index++)
00014 {
00015 Edge sampleEdge = entries[index].GetRealEdge();
00016 Edge sampleEdgeMeasured = entries[index].GetMeasuredEdge();
00017
00018 if (Edge::GetDistance(measuredEdge, sampleEdgeMeasured) <= Edge::GetDistance(measuredEdge, bestEdgeMeasured))
00019 {
00020 bestEdge = sampleEdge;
00021 bestEdgeMeasured = sampleEdgeMeasured;
00022 }
00023 }
00024
00025 return bestEdge;
00026 }
00027
00028 void MicroEdgeMap::PopulateTable(Rectangle area, int offsetCount, int angleCount)
00029 {
00030 if (area.GetLeft() < -1 || area.GetRight() > +1 || area.GetTop() < -M_PI || area.GetBottom() > +M_PI) throw "The parameter 'area' was out of range.";
00031 if (offsetCount <= 0) throw "The parameter 'offsetCount' was out of range.";
00032 if (angleCount <= 0) throw "The parameter 'angleCount' was out of range.";
00033
00034 for (int offsetIndex = 0; offsetIndex < offsetCount; offsetIndex++)
00035 for (int angleIndex = 0; angleIndex < angleCount; angleIndex++)
00036 {
00037 double offset = area.GetLeft() + offsetIndex * (area.GetWidth() / (offsetCount - 1));
00038 double angle = area.GetTop() + angleIndex * (area.GetHeight() / (angleCount - 1));
00039
00040 Edge realEdge = Edge(offset, angle);
00041 Edge measuredEdge = MeasureEdge(realEdge);
00042
00043 entries.push_back(Entry(realEdge, measuredEdge));
00044 }
00045 }
00046 Edge MicroEdgeMap::MeasureEdge(Edge realEdge)
00047 {
00048 EdgeImage* realEdgeImage = new EdgeImage(Line::FromEdge(realEdge), Rectangle(-1, +1, -1, +1));
00049 Image* image = rasterizer->Rasterize(realEdgeImage, microEdgeDetector->GetSize(), microEdgeDetector->GetSize());
00050 Edge measuredEdge = microEdgeDetector->DetectEdge(image);
00051
00052 delete realEdgeImage;
00053 delete image;
00054
00055 return measuredEdge;
00056 }
00057 };
