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Added confidence to plate lines -- using them in plate corner detection

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tweaked plate corner detection defaults
This commit is contained in:
Matt Hill
2014-07-02 18:26:08 -04:00
parent 70424df9be
commit 5b1e7429ed
4 changed files with 94 additions and 33 deletions
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78
src/openalpr/platecorners.cpp
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@@ -132,6 +132,9 @@ void PlateCorners::scoreVerticals(int v1, int v2)
float charHeightToPlateWidthRatio = config->plateWidthMM / config->charHeightMM;
float idealPixelWidth = this->charHeight * (charHeightToPlateWidthRatio * 1.03); // Add 3% so we don't clip any characters
float confidenceDiff = 0;
float missingSegmentPenalty = 0;
if (v1 == NO_LINE && v2 == NO_LINE)
{
//return;
@@ -142,25 +145,33 @@ void PlateCorners::scoreVerticals(int v1, int v2)
left = centerLine.getParallelLine(idealPixelWidth / 2);
right = centerLine.getParallelLine(-1 * idealPixelWidth / 2 );
score += SCORING_MISSING_SEGMENT_PENALTY_VERTICAL * 2;
missingSegmentPenalty += SCORING_MISSING_SEGMENT_PENALTY_VERTICAL * 2;
confidenceDiff += 2;
}
else if (v1 != NO_LINE && v2 != NO_LINE)
{
left = this->plateLines->verticalLines[v1];
right = this->plateLines->verticalLines[v2];
left = this->plateLines->verticalLines[v1].line;
right = this->plateLines->verticalLines[v2].line;
confidenceDiff += (1.0 - this->plateLines->verticalLines[v1].confidence);
confidenceDiff += (1.0 - this->plateLines->verticalLines[v2].confidence);
}
else if (v1 == NO_LINE && v2 != NO_LINE)
{
right = this->plateLines->verticalLines[v2];
right = this->plateLines->verticalLines[v2].line;
left = right.getParallelLine(idealPixelWidth);
score += SCORING_MISSING_SEGMENT_PENALTY_VERTICAL;
missingSegmentPenalty += SCORING_MISSING_SEGMENT_PENALTY_VERTICAL;
confidenceDiff += (1.0 - this->plateLines->verticalLines[v2].confidence);
}
else if (v1 != NO_LINE && v2 == NO_LINE)
{
left = this->plateLines->verticalLines[v1];
left = this->plateLines->verticalLines[v1].line;
right = left.getParallelLine(-1 * idealPixelWidth);
score += SCORING_MISSING_SEGMENT_PENALTY_VERTICAL;
missingSegmentPenalty += SCORING_MISSING_SEGMENT_PENALTY_VERTICAL;
confidenceDiff += (1.0 - this->plateLines->verticalLines[v1].confidence);
}
score += confidenceDiff * SCORING_LINE_CONFIDENCE_WEIGHT;
score += missingSegmentPenalty;
// Make sure this line is to the left of our license plate letters
if (left.isPointBelowLine(charRegion->getCharBoxLeft().midpoint()) == false)
@@ -197,7 +208,7 @@ void PlateCorners::scoreVerticals(int v1, int v2)
float plateDistance = abs(idealPixelWidth - distanceBetweenPoints(leftMidLinePoint, rightMidLinePoint));
score += plateDistance * SCORING_VERTICALDISTANCE_WEIGHT;
score += plateDistance * SCORING_DISTANCE_WEIGHT_VERTICAL;
if (score < this->bestVerticalScore)
{
@@ -211,7 +222,13 @@ void PlateCorners::scoreVerticals(int v1, int v2)
cout << "xx xx Score: Left= " << left.str() << endl;
cout << "xx xx Score: Right= " << right.str() << endl;
cout << "Vertical breakdown Score:" << endl;
cout << " -- Missing Segment Score: " << missingSegmentPenalty << " -- Weight (1.0)" << endl;
scorecomponent = missingSegmentPenalty ;
cout << " -- -- Score: " << scorecomponent << " = " << scorecomponent / score * 100 << "% of score" << endl;
cout << " -- Boxiness Score: " << verticalAngleDiff << " -- Weight (" << SCORING_BOXINESS_WEIGHT << ")" << endl;
scorecomponent = verticalAngleDiff * SCORING_BOXINESS_WEIGHT;
cout << " -- -- Score: " << scorecomponent << " = " << scorecomponent / score * 100 << "% of score" << endl;
@@ -220,10 +237,14 @@ void PlateCorners::scoreVerticals(int v1, int v2)
scorecomponent = distanceFromEdge * SCORING_VERTICALDISTANCE_FROMEDGE_WEIGHT;
cout << " -- -- Score: " << scorecomponent << " = " << scorecomponent / score * 100 << "% of score" << endl;
cout << " -- Distance Score: " << plateDistance << " -- Weight (" << SCORING_VERTICALDISTANCE_WEIGHT << ")" << endl;
scorecomponent = plateDistance * SCORING_VERTICALDISTANCE_WEIGHT;
cout << " -- Distance Score: " << plateDistance << " -- Weight (" << SCORING_DISTANCE_WEIGHT_VERTICAL << ")" << endl;
scorecomponent = plateDistance * SCORING_DISTANCE_WEIGHT_VERTICAL;
cout << " -- -- Score: " << scorecomponent << " = " << scorecomponent / score * 100 << "% of score" << endl;
cout << " -- Plate line confidence Score: " << confidenceDiff << " -- Weight (" << SCORING_LINE_CONFIDENCE_WEIGHT << ")" << endl;
scorecomponent = confidenceDiff * SCORING_LINE_CONFIDENCE_WEIGHT;
cout << " -- -- Score: " << scorecomponent << " = " << scorecomponent / score * 100 << "% of score" << endl;
cout << " -- Score: " << score << endl;
}
@@ -247,6 +268,9 @@ void PlateCorners::scoreHorizontals(int h1, int h2)
float charHeightToPlateHeightRatio = config->plateHeightMM / config->charHeightMM;
float idealPixelHeight = this->charHeight * charHeightToPlateHeightRatio;
float confidenceDiff = 0;
float missingSegmentPenalty = 0;
if (h1 == NO_LINE && h2 == NO_LINE)
{
// return;
@@ -257,25 +281,33 @@ void PlateCorners::scoreHorizontals(int h1, int h2)
top = centerLine.getParallelLine(idealPixelHeight / 2);
bottom = centerLine.getParallelLine(-1 * idealPixelHeight / 2 );
score += SCORING_MISSING_SEGMENT_PENALTY_HORIZONTAL * 2;
missingSegmentPenalty += SCORING_MISSING_SEGMENT_PENALTY_HORIZONTAL * 2;
confidenceDiff += 2;
}
else if (h1 != NO_LINE && h2 != NO_LINE)
{
top = this->plateLines->horizontalLines[h1];
bottom = this->plateLines->horizontalLines[h2];
top = this->plateLines->horizontalLines[h1].line;
bottom = this->plateLines->horizontalLines[h2].line;
confidenceDiff += (1.0 - this->plateLines->horizontalLines[h1].confidence);
confidenceDiff += (1.0 - this->plateLines->horizontalLines[h2].confidence);
}
else if (h1 == NO_LINE && h2 != NO_LINE)
{
bottom = this->plateLines->horizontalLines[h2];
bottom = this->plateLines->horizontalLines[h2].line;
top = bottom.getParallelLine(idealPixelHeight);
score += SCORING_MISSING_SEGMENT_PENALTY_HORIZONTAL;
missingSegmentPenalty += SCORING_MISSING_SEGMENT_PENALTY_HORIZONTAL;
confidenceDiff += (1.0 - this->plateLines->horizontalLines[h2].confidence);
}
else if (h1 != NO_LINE && h2 == NO_LINE)
{
top = this->plateLines->horizontalLines[h1];
top = this->plateLines->horizontalLines[h1].line;
bottom = top.getParallelLine(-1 * idealPixelHeight);
score += SCORING_MISSING_SEGMENT_PENALTY_HORIZONTAL;
missingSegmentPenalty += SCORING_MISSING_SEGMENT_PENALTY_HORIZONTAL;
confidenceDiff += (1.0 - this->plateLines->horizontalLines[h1].confidence);
}
score += confidenceDiff * SCORING_LINE_CONFIDENCE_WEIGHT;
score += missingSegmentPenalty;
// Make sure this line is above our license plate letters
if (top.isPointBelowLine(charRegion->getCharBoxTop().midpoint()) == false)
@@ -369,7 +401,13 @@ void PlateCorners::scoreHorizontals(int h1, int h2)
cout << "xx xx Score: Top= " << top.str() << endl;
cout << "xx xx Score: Bottom= " << bottom.str() << endl;
cout << "Horizontal breakdown Score:" << endl;
cout << " -- Missing Segment Score: " << missingSegmentPenalty << " -- Weight (1.0)" << endl;
scorecomponent = missingSegmentPenalty ;
cout << " -- -- Score: " << scorecomponent << " = " << scorecomponent / score * 100 << "% of score" << endl;
cout << " -- Boxiness Score: " << horizontalAngleDiff << " -- Weight (" << SCORING_BOXINESS_WEIGHT << ")" << endl;
scorecomponent = horizontalAngleDiff * SCORING_BOXINESS_WEIGHT;
cout << " -- -- Score: " << scorecomponent << " = " << scorecomponent / score * 100 << "% of score" << endl;
@@ -386,6 +424,10 @@ void PlateCorners::scoreHorizontals(int h1, int h2)
scorecomponent = charanglediff * SCORING_ANGLE_MATCHES_LPCHARS_WEIGHT;
cout << " -- -- Score: " << scorecomponent << " = " << scorecomponent / score * 100 << "% of score" << endl;
cout << " -- Plate line confidence Score: " << confidenceDiff << " -- Weight (" << SCORING_LINE_CONFIDENCE_WEIGHT << ")" << endl;
scorecomponent = confidenceDiff * SCORING_LINE_CONFIDENCE_WEIGHT;
cout << " -- -- Score: " << scorecomponent << " = " << scorecomponent / score * 100 << "% of score" << endl;
cout << " -- Score: " << score << endl;
}
this->bestHorizontalScore = score;