void SegmentFactory::loadBool (const ColorFilter &filter,
bool *columnBool,
const QImage &image,
int x)
{
for (int y = 0; y < image.height(); y++) {
if (x < 0) {
columnBool [y] = false;
} else {
columnBool [y] = filter.pixelFilteredIsOn (image, x, y);
}
}
}
bool DigitizeStatePointMatch::pixelIsOnInImage (const QImage &img,
int x,
int y,
int radiusLimit) const
{
ColorFilter filter;
// Examine all nearby pixels
bool pixelShouldBeOn = false;
for (int xOffset = -radiusLimit; xOffset <= radiusLimit; xOffset++) {
for (int yOffset = -radiusLimit; yOffset <= radiusLimit; yOffset++) {
int radius = qFloor (qSqrt (xOffset * xOffset + yOffset * yOffset));
if (radius <= radiusLimit) {
int xNearby = x + xOffset;
int yNearby = y + yOffset;
if ((0 <= xNearby) &&
(0 <= yNearby) &&
(xNearby < img.width()) &&
(yNearby < img.height())) {
if (filter.pixelFilteredIsOn (img,
xNearby,
yNearby)) {
pixelShouldBeOn = true;
break;
}
}
}
}
}
return pixelShouldBeOn;
}
QList<PointMatchPixel> DigitizeStatePointMatch::extractSamplePointPixels (const QImage &img,
const DocumentModelPointMatch &modelPointMatch,
const QPointF &posScreen) const
{
LOG4CPP_INFO_S ((*mainCat)) << "DigitizeStatePointMatch::extractSamplePointPixels";
// All points inside modelPointMatch.maxPointSize() are collected, whether or not they
// are on or off. Originally only the on points were collected, but obvious mismatches
// were happening (example, 3x3 point would appear to be found in several places inside 8x32 rectangle)
QList<PointMatchPixel> samplePointPixels;
int radiusMax = qFloor (modelPointMatch.maxPointSize() / 2);
ColorFilter colorFilter;
for (int xOffset = -radiusMax; xOffset <= radiusMax; xOffset++) {
for (int yOffset = -radiusMax; yOffset <= radiusMax; yOffset++) {
int x = qFloor (posScreen.x() + xOffset);
int y = qFloor (posScreen.y() + yOffset);
int radius = qFloor (qSqrt (xOffset * xOffset + yOffset * yOffset));
if (radius <= radiusMax) {
bool pixelIsOn = colorFilter.pixelFilteredIsOn (img,
x,
y);
PointMatchPixel point (xOffset,
yOffset,
pixelIsOn);
samplePointPixels.push_back (point);
}
}
}
return samplePointPixels;
}
