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Finish chain approximation tests

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This commit is contained in:
jaseg 2021-06-02 11:00:35 +02:00
parent 3b553b3a1d
commit d18b8a1d80
2 changed files with 188 additions and 104 deletions
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94
svg-flatten/src/nopencv.cpp
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@ -247,6 +247,7 @@ double k_cos(const Polygon_i &poly, size_t i, size_t k) {
return dp / (sqrt(sq_a)*sqrt(sq_b));
}
constexpr bool debug = false;
ContourCallback gerbolyze::nopencv::simplify_contours_teh_chin(ContourCallback cb) {
return [&cb](Polygon_i &poly, ContourPolarity cpol) {
size_t sz = poly.size();
@ -261,30 +262,32 @@ ContourCallback gerbolyze::nopencv::simplify_contours_teh_chin(ContourCallback c
retain[i] = true;
}
cerr << endl;
cerr << "Polarity: " << cpol <<endl;
cerr << "Coords:"<<endl;
cerr << " x: ";
for (size_t i=0; i<sz; i++) {
cerr << setfill(' ') << setw(2) << poly[i][0] << " ";
if (debug) {
cerr << endl;
cerr << "Polarity: " << cpol <<endl;
cerr << "Coords:"<<endl;
cerr << " x: ";
for (size_t i=0; i<sz; i++) {
cerr << setfill(' ') << setw(2) << poly[i][0] << " ";
}
cerr << endl;
cerr << " y: ";
for (size_t i=0; i<sz; i++) {
cerr << setfill(' ') << setw(2) << poly[i][1] << " ";
}
cerr << endl;
cerr << "Metrics:"<<endl;
cerr << "ros: ";
for (size_t i=0; i<sz; i++) {
cerr << setfill(' ') << setw(2) << ros[i] << " ";
}
cerr << endl;
cerr << "sig: ";
for (size_t i=0; i<sz; i++) {
cerr << setfill(' ') << setw(2) << sig[i] << " ";
}
cerr << endl;
}
cerr << endl;
cerr << " y: ";
for (size_t i=0; i<sz; i++) {
cerr << setfill(' ') << setw(2) << poly[i][1] << " ";
}
cerr << endl;
cerr << "Metrics:"<<endl;
cerr << "ros: ";
for (size_t i=0; i<sz; i++) {
cerr << setfill(' ') << setw(2) << ros[i] << " ";
}
cerr << endl;
cerr << "sig: ";
for (size_t i=0; i<sz; i++) {
cerr << setfill(' ') << setw(2) << sig[i] << " ";
}
cerr << endl;
/* Pass 0 (like opencv): Remove points with zero 1-curvature */
for (size_t i=0; i<sz; i++) {
@ -294,11 +297,13 @@ ContourCallback gerbolyze::nopencv::simplify_contours_teh_chin(ContourCallback c
}
}
cerr << "pass 0: ";
for (size_t i=0; i<sz; i++) {
cerr << (retain[i] ? "#" : ".");
if (debug) {
cerr << "pass 0: ";
for (size_t i=0; i<sz; i++) {
cerr << (retain[i] ? "#" : ".");
}
cerr << endl;
}
cerr << endl;
/* 3a, Pass 1: Non-maxima suppression */
for (size_t i=0; i<sz; i++) {
@ -310,11 +315,13 @@ ContourCallback gerbolyze::nopencv::simplify_contours_teh_chin(ContourCallback c
}
}
cerr << "pass 1: ";
for (size_t i=0; i<sz; i++) {
cerr << (retain[i] ? "#" : ".");
if (debug) {
cerr << "pass 1: ";
for (size_t i=0; i<sz; i++) {
cerr << (retain[i] ? "#" : ".");
}
cerr << endl;
}
cerr << endl;
/* 3b, Pass 2: Zero-curvature suppression */
for (size_t i=0; i<sz; i++) {
@ -325,11 +332,13 @@ ContourCallback gerbolyze::nopencv::simplify_contours_teh_chin(ContourCallback c
}
}
cerr << "pass 2: ";
for (size_t i=0; i<sz; i++) {
cerr << (retain[i] ? "#" : ".");
if (debug) {
cerr << "pass 2: ";
for (size_t i=0; i<sz; i++) {
cerr << (retain[i] ? "#" : ".");
}
cerr << endl;
}
cerr << endl;
/* 3c, Pass 3: Further thinning */
for (size_t i=0; i<sz; i++) {
@ -344,11 +353,13 @@ ContourCallback gerbolyze::nopencv::simplify_contours_teh_chin(ContourCallback c
}
}
cerr << "pass 3: ";
for (size_t i=0; i<sz; i++) {
cerr << (retain[i] ? "#" : ".");
if (debug) {
cerr << "pass 3: ";
for (size_t i=0; i<sz; i++) {
cerr << (retain[i] ? "#" : ".");
}
cerr << endl;
}
cerr << endl;
Polygon_i new_poly;
for (size_t i=0; i<sz; i++) {
@ -356,7 +367,10 @@ ContourCallback gerbolyze::nopencv::simplify_contours_teh_chin(ContourCallback c
new_poly.push_back(poly[i]);
}
}
cb(new_poly, cpol);
if (!new_poly.empty()) {
cb(new_poly, cpol);
}
};
}