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-rw-r--r--svg-flatten/src/nopencv_test.cpp405
1 files changed, 0 insertions, 405 deletions
diff --git a/svg-flatten/src/nopencv_test.cpp b/svg-flatten/src/nopencv_test.cpp
deleted file mode 100644
index 17ba71e..0000000
--- a/svg-flatten/src/nopencv_test.cpp
+++ /dev/null
@@ -1,405 +0,0 @@
-
-#include <iostream>
-#include <fstream>
-#include <iomanip>
-#include <cmath>
-#include <filesystem>
-
-#include "nopencv.hpp"
-
-#include <subprocess.h>
-#include <minunit.h>
-
-#include "stb_image.h"
-
-using namespace gerbolyze;
-using namespace gerbolyze::nopencv;
-
-char msg[1024];
-
-class TempfileHack {
-public:
- TempfileHack(const string ext) : m_path { filesystem::temp_directory_path() / (std::tmpnam(nullptr) + ext) } {}
- ~TempfileHack() { remove(m_path); }
-
- const char *c_str() { return m_path.c_str(); }
-
-private:
- filesystem::path m_path;
-};
-
-class SVGPolyRenderer {
-public:
- SVGPolyRenderer(const char *fn, int width_px, int height_px)
- : m_svg(fn) {
- m_svg << "<svg width=\"" << width_px << "px\" height=\"" << height_px << "px\" viewBox=\"0 0 "
- << width_px << " " << height_px << "\" "
- << "xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">" << endl;
- m_svg << "<rect width=\"100%\" height=\"100%\" fill=\"black\"/>" << endl;
- }
-
- ContourCallback callback() {
- return [this](Polygon_i &poly, ContourPolarity pol) {
- mu_assert(poly.size() > 0, "Empty contour returned");
- mu_assert(poly.size() > 2, "Contour has less than three points, no area");
- mu_assert(pol == CP_CONTOUR || pol == CP_HOLE, "Contour has invalid polarity");
-
- m_svg << "<path fill=\"" << ((pol == CP_HOLE) ? "black" : "white") << "\" d=\"";
- m_svg << "M " << poly[0][0] << " " << poly[0][1];
- for (size_t i=1; i<poly.size(); i++) {
- m_svg << " L " << poly[i][0] << " " << poly[i][1];
- }
- m_svg << " Z\"/>" << endl;
- };
- }
-
- void close() {
- m_svg << "</svg>" << endl;
- m_svg.close();
- }
-
-private:
- ofstream m_svg;
-};
-
-MU_TEST(test_complex_example_from_paper) {
- int32_t img_data[6*9] = {
- 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 1, 1, 1, 1, 1, 1, 1, 0,
- 0, 1, 0, 0, 1, 0, 0, 1, 0,
- 0, 1, 0, 0, 1, 0, 0, 1, 0,
- 0, 1, 1, 1, 1, 1, 1, 1, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0,
- };
- Image32 test_img(9, 6, static_cast<int*>(img_data));
-
- const Polygon_i expected_polys[3] = {
- {
- {1,1}, {1,2}, {1,3}, {1,4}, {1,5},
- {2,5}, {3,5}, {4,5}, {5,5}, {6,5}, {7,5}, {8,5},
- {8,4}, {8,3}, {8,2}, {8,1},
- {7,1}, {6,1}, {5,1}, {4,1}, {3,1}, {2,1}
- },
- {
- {2,2}, {2,3}, {2,4},
- {3,4}, {4,4},
- {4,3}, {4,2},
- {3,2}
- },
- {
- {5,2}, {5,3}, {5,4},
- {6,4}, {7,4},
- {7,3}, {7,2},
- {6,2}
- }
- };
-
- const ContourPolarity expected_polarities[3] = {CP_CONTOUR, CP_HOLE, CP_HOLE};
-
- int invocation_count = 0;
- gerbolyze::nopencv::find_contours(test_img, [&invocation_count, &expected_polarities, &expected_polys](Polygon_i &poly, ContourPolarity pol) {
- invocation_count += 1;
- mu_assert((invocation_count <= 3), "Too many contours returned");
-
- mu_assert(poly.size() > 0, "Empty contour returned");
- mu_assert_int_eq(pol, expected_polarities[invocation_count-1]);
-
- i2p last;
- bool first = true;
- Polygon_i exp = expected_polys[invocation_count-1];
- for (auto &p : poly) {
- if (!first) {
- mu_assert((fabs(p[0] - last[0]) + fabs(p[1] - last[1]) == 1), "Subsequent contour points have distance other than one");
- mu_assert(find(exp.begin(), exp.end(), p) != exp.end(), "Got unexpected contour point");
- }
- last = p;
- }
- });
- mu_assert_int_eq(3, invocation_count);
-
- int32_t tpl[6*9] = {
- 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 2, 2, 2, 2, 2, 2,-2, 0,
- 0,-3, 0, 0,-4, 0, 0,-2, 0,
- 0,-3, 0, 0,-4, 0, 0,-2, 0,
- 0, 2, 2, 2, 2, 2, 2,-2, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0,
- };
-
-
- for (int y=0; y<6; y++) {
- for (int x=0; x<9; x++) {
- int a = test_img.at(x, y), b = tpl[y*9+x];
- if (a != b) {
- cout << "Result:" << endl;
- cout << " ";
- for (int x=0; x<9; x++) {
- cout << x << " ";
- }
- cout << endl;
- cout << " ";
- for (int x=0; x<9; x++) {
- cout << "---";
- }
- cout << endl;
- for (int y=0; y<6; y++) {
- cout << y << " | ";
- for (int x=0; x<9; x++) {
- cout << setfill(' ') << setw(2) << test_img.at(x, y) << " ";
- }
- cout << endl;
- }
-
- snprintf(msg, sizeof(msg), "Result does not match template @(%d, %d): %d != %d\n", x, y, a, b);
- mu_fail(msg);
- }
- }
- }
-}
-
-int render_svg(const char *in_svg, const char *out_png) {
- const char *command_line[] = {"resvg", in_svg, out_png, nullptr};
- struct subprocess_s subprocess;
- int rc = subprocess_create(command_line, subprocess_option_inherit_environment, &subprocess);
- if (rc)
- return rc;
-
- int resvg_rc = -1;
- rc = subprocess_join(&subprocess, &resvg_rc);
- if (rc)
- return rc;
- if (resvg_rc)
- return -resvg_rc;
-
- rc = subprocess_destroy(&subprocess);
- if (rc)
- return rc;
-
- return 0;
-}
-
-static void testdata_roundtrip(const char *fn) {
- Image32 ref_img;
- mu_assert(ref_img.load(fn), "Input image failed to load");
- ref_img.binarize();
- Image32 ref_img_copy(ref_img);
-
- TempfileHack tmp_svg(".svg");
- TempfileHack tmp_png(".png");
-
- SVGPolyRenderer ctx(tmp_svg.c_str(), ref_img.cols(), ref_img.rows());
- gerbolyze::nopencv::find_contours(ref_img, ctx.callback());
- ctx.close();
-
- mu_assert_int_eq(0, render_svg(tmp_svg.c_str(), tmp_png.c_str()));
-
- Image32 out_img;
- mu_assert(out_img.load(tmp_png.c_str()), "Output image failed to load");
- out_img.binarize();
-
- mu_assert_int_eq(ref_img.cols(), out_img.cols());
- mu_assert_int_eq(ref_img.rows(), out_img.rows());
-
- for (int y=0; y<out_img.rows(); y++) {
- for (int x=0; x<out_img.cols(); x++) {
- if (out_img.at(x, y) != ref_img_copy.at(x, y)) {
- snprintf(msg, sizeof(msg), "%s: Result does not match input @(%d, %d): %d != %d\n", fn, x, y, out_img.at(x, y), ref_img_copy.at(x, y));
- mu_fail(msg);
- }
- }
- }
-}
-
-MU_TEST(test_round_trip_blank) { testdata_roundtrip("testdata/blank.png"); }
-MU_TEST(test_round_trip_white) { testdata_roundtrip("testdata/white.png"); }
-MU_TEST(test_round_trip_blob_border_w) { testdata_roundtrip("testdata/blob-border-w.png"); }
-MU_TEST(test_round_trip_blobs_borders) { testdata_roundtrip("testdata/blobs-borders.png"); }
-MU_TEST(test_round_trip_blobs_corners) { testdata_roundtrip("testdata/blobs-corners.png"); }
-MU_TEST(test_round_trip_blobs_crossing) { testdata_roundtrip("testdata/blobs-crossing.png"); }
-MU_TEST(test_round_trip_cross) { testdata_roundtrip("testdata/cross.png"); }
-MU_TEST(test_round_trip_letter_e) { testdata_roundtrip("testdata/letter-e.png"); }
-MU_TEST(test_round_trip_paper_example) { testdata_roundtrip("testdata/paper-example.png"); }
-MU_TEST(test_round_trip_paper_example_inv) { testdata_roundtrip("testdata/paper-example-inv.png"); }
-MU_TEST(test_round_trip_single_px) { testdata_roundtrip("testdata/single-px.png"); }
-MU_TEST(test_round_trip_single_px_inv) { testdata_roundtrip("testdata/single-px-inv.png"); }
-MU_TEST(test_round_trip_two_blobs) { testdata_roundtrip("testdata/two-blobs.png"); }
-MU_TEST(test_round_trip_two_px) { testdata_roundtrip("testdata/two-px.png"); }
-MU_TEST(test_round_trip_two_px_inv) { testdata_roundtrip("testdata/two-px-inv.png"); }
-
-static void test_polygon_area(const char *fn) {
- //cerr << endl << "poly area test " << fn << endl;
- Image32 ref_img;
- mu_assert(ref_img.load(fn), "Input image failed to load");
- ref_img.binarize();
-
- int white_px_count = 0;
- int black_px_count = 0;
- for (int y=0; y<ref_img.rows(); y++) {
- for (int x=0; x<ref_img.cols(); x++) {
- if (ref_img.at(x, y)) {
- white_px_count += 1;
- } else {
- black_px_count += 1;
- }
- }
- }
-
- double pos_sum = 0.0;
- double neg_sum = ref_img.size();
- gerbolyze::nopencv::find_contours(ref_img, [&pos_sum, &neg_sum](Polygon_i& poly, ContourPolarity pol) {
- double area = polygon_area(poly);
- //cerr << endl << fn << ": " << area << " " << pos_sum << " / " << neg_sum << " -- " << white_px_count << " / " << black_px_count << " GOT: " << poly.size() << " w/ " << pol << endl;
- mu_assert(fabs(area) > 0.99, "Polygon smaller than a single pixel");
- mu_assert((pol == CP_CONTOUR) == (area >= 0), "Polygon area has incorrect sign");
-
- pos_sum += area;
- neg_sum -= area;
- });
-
- mu_assert(pos_sum - white_px_count < 0.01, "Calculated area outside tolerance");
- mu_assert(neg_sum - black_px_count < 0.01, "Calculated area outside tolerance");
- //cerr << endl << "poly area test " << fn << " done" << endl;
-}
-
-MU_TEST(test_polygon_area_blank) { test_polygon_area("testdata/blank.png"); }
-MU_TEST(test_polygon_area_white) { test_polygon_area("testdata/white.png"); }
-MU_TEST(test_polygon_area_blob_border_w) { test_polygon_area("testdata/blob-border-w.png"); }
-MU_TEST(test_polygon_area_blobs_borders) { test_polygon_area("testdata/blobs-borders.png"); }
-MU_TEST(test_polygon_area_blobs_corners) { test_polygon_area("testdata/blobs-corners.png"); }
-MU_TEST(test_polygon_area_blobs_crossing) { test_polygon_area("testdata/blobs-crossing.png"); }
-MU_TEST(test_polygon_area_cross) { test_polygon_area("testdata/cross.png"); }
-MU_TEST(test_polygon_area_letter_e) { test_polygon_area("testdata/letter-e.png"); }
-MU_TEST(test_polygon_area_paper_example) { test_polygon_area("testdata/paper-example.png"); }
-MU_TEST(test_polygon_area_paper_example_inv) { test_polygon_area("testdata/paper-example-inv.png"); }
-MU_TEST(test_polygon_area_single_px) { test_polygon_area("testdata/single-px.png"); }
-MU_TEST(test_polygon_area_single_px_inv) { test_polygon_area("testdata/single-px-inv.png"); }
-MU_TEST(test_polygon_area_two_blobs) { test_polygon_area("testdata/two-blobs.png"); }
-MU_TEST(test_polygon_area_two_px) { test_polygon_area("testdata/two-px.png"); }
-MU_TEST(test_polygon_area_two_px_inv) { test_polygon_area("testdata/two-px-inv.png"); }
-
-static void chain_approx_test(const char *fn) {
- //cout << endl << "Testing \"" << fn << "\"" << endl;
- Image32 ref_img;
- mu_assert(ref_img.load(fn), "Input image failed to load");
- ref_img.binarize();
- Image32 ref_img_copy(ref_img);
-
- TempfileHack tmp_svg(".svg");
- TempfileHack tmp_png(".png");
-
- SVGPolyRenderer ctx(tmp_svg.c_str(), ref_img.cols(), ref_img.rows());
- gerbolyze::nopencv::find_contours(ref_img, simplify_contours_teh_chin(ctx.callback()));
- ctx.close();
-
- mu_assert_int_eq(0, render_svg(tmp_svg.c_str(), tmp_png.c_str()));
-
- Image32 out_img;
- mu_assert(out_img.load(tmp_png.c_str()), "Output image failed to load");
- mu_assert_int_eq(ref_img.rows(), out_img.rows());
- mu_assert_int_eq(ref_img.cols(), out_img.cols());
-
- double max_abs_deviation = 0;
- double rms_sum = 0;
- double mean_sum = 0;
- for (int y=0; y<out_img.rows(); y++) {
- for (int x=0; x<out_img.cols(); x++) {
- double delta = fabs((double)out_img.at(x, y)/255.0 - (double)ref_img_copy.at(x, y));
- max_abs_deviation = fmax(max_abs_deviation, delta);
- rms_sum += delta*delta;
- mean_sum += delta;
- }
- }
-
- rms_sum = sqrt(rms_sum / out_img.size());
- mean_sum /= out_img.size();
- if (rms_sum > 0.5) {
- snprintf(msg, sizeof(msg), "%s: Chain approximation RMS error is above threshold: %.3f > 0.5\n", fn, rms_sum);
- mu_fail(msg);
- }
- if (mean_sum > 0.1) {
- snprintf(msg, sizeof(msg), "%s: Chain approximation mean error is above threshold: %.3f > 0.1\n", fn, mean_sum);
- mu_fail(msg);
- }
- //mu_assert(max_abs_deviation < 0.5, "Maximum chain approximation error is above threshold");
-}
-
-
-MU_TEST(chain_approx_test_chromosome) { chain_approx_test("testdata/chain-approx-teh-chin-chromosome.png"); }
-MU_TEST(chain_approx_test_blank) { chain_approx_test("testdata/blank.png"); }
-MU_TEST(chain_approx_test_white) { chain_approx_test("testdata/white.png"); }
-MU_TEST(chain_approx_test_blob_border_w) { chain_approx_test("testdata/blob-border-w.png"); }
-MU_TEST(chain_approx_test_blobs_borders) { chain_approx_test("testdata/blobs-borders.png"); }
-MU_TEST(chain_approx_test_blobs_corners) { chain_approx_test("testdata/blobs-corners.png"); }
-MU_TEST(chain_approx_test_blobs_crossing) { chain_approx_test("testdata/blobs-crossing.png"); }
-MU_TEST(chain_approx_test_cross) { chain_approx_test("testdata/cross.png"); }
-MU_TEST(chain_approx_test_letter_e) { chain_approx_test("testdata/letter-e.png"); }
-MU_TEST(chain_approx_test_paper_example) { chain_approx_test("testdata/paper-example.png"); }
-MU_TEST(chain_approx_test_paper_example_inv) { chain_approx_test("testdata/paper-example-inv.png"); }
-MU_TEST(chain_approx_test_single_px) { chain_approx_test("testdata/single-px.png"); }
-MU_TEST(chain_approx_test_single_px_inv) { chain_approx_test("testdata/single-px-inv.png"); }
-MU_TEST(chain_approx_test_two_blobs) { chain_approx_test("testdata/two-blobs.png"); }
-MU_TEST(chain_approx_test_two_px) { chain_approx_test("testdata/two-px.png"); }
-MU_TEST(chain_approx_test_two_px_inv) { chain_approx_test("testdata/two-px-inv.png"); }
-
-
-MU_TEST_SUITE(nopencv_contours_suite) {
- MU_RUN_TEST(test_complex_example_from_paper);
-
- MU_RUN_TEST(test_round_trip_blank);
- MU_RUN_TEST(test_round_trip_white);
- MU_RUN_TEST(test_round_trip_blob_border_w);
- MU_RUN_TEST(test_round_trip_blobs_borders);
- MU_RUN_TEST(test_round_trip_blobs_corners);
- MU_RUN_TEST(test_round_trip_blobs_crossing);
- MU_RUN_TEST(test_round_trip_cross);
- MU_RUN_TEST(test_round_trip_letter_e);
- MU_RUN_TEST(test_round_trip_paper_example);
- MU_RUN_TEST(test_round_trip_paper_example_inv);
- MU_RUN_TEST(test_round_trip_single_px);
- MU_RUN_TEST(test_round_trip_single_px_inv);
- MU_RUN_TEST(test_round_trip_two_blobs);
- MU_RUN_TEST(test_round_trip_two_px);
- MU_RUN_TEST(test_round_trip_two_px_inv);
-
- MU_RUN_TEST(chain_approx_test_chromosome);
- MU_RUN_TEST(chain_approx_test_blank);
- MU_RUN_TEST(chain_approx_test_white);
- MU_RUN_TEST(chain_approx_test_blob_border_w);
- MU_RUN_TEST(chain_approx_test_blobs_borders);
- MU_RUN_TEST(chain_approx_test_blobs_corners);
- MU_RUN_TEST(chain_approx_test_blobs_crossing);
- MU_RUN_TEST(chain_approx_test_cross);
- MU_RUN_TEST(chain_approx_test_letter_e);
- MU_RUN_TEST(chain_approx_test_paper_example);
- MU_RUN_TEST(chain_approx_test_paper_example_inv);
- MU_RUN_TEST(chain_approx_test_single_px);
- MU_RUN_TEST(chain_approx_test_single_px_inv);
- MU_RUN_TEST(chain_approx_test_two_blobs);
- MU_RUN_TEST(chain_approx_test_two_px);
- MU_RUN_TEST(chain_approx_test_two_px_inv);
-
- MU_RUN_TEST(test_polygon_area_blank);
- MU_RUN_TEST(test_polygon_area_white);
- MU_RUN_TEST(test_polygon_area_blob_border_w);
- MU_RUN_TEST(test_polygon_area_blobs_borders);
- MU_RUN_TEST(test_polygon_area_blobs_corners);
- MU_RUN_TEST(test_polygon_area_blobs_crossing);
- MU_RUN_TEST(test_polygon_area_cross);
- MU_RUN_TEST(test_polygon_area_letter_e);
- MU_RUN_TEST(test_polygon_area_paper_example);
- MU_RUN_TEST(test_polygon_area_paper_example_inv);
- MU_RUN_TEST(test_polygon_area_single_px);
- MU_RUN_TEST(test_polygon_area_single_px_inv);
- MU_RUN_TEST(test_polygon_area_two_blobs);
- MU_RUN_TEST(test_polygon_area_two_px);
- MU_RUN_TEST(test_polygon_area_two_px_inv);
-};
-
-int main(int argc, char **argv) {
- (void)argc;
- (void)argv;
-
- MU_RUN_SUITE(nopencv_contours_suite);
- MU_REPORT();
- return MU_EXIT_CODE;
-}