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mcc: add SpyderChecker 24/48 - support and tests #4072

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bac311d
Add support for SpyderCheckr 48 and 24 models
AYELET0527661122 Feb 2, 2026
445a8cc
Add new checker models to checker_model.hpp
AYELET0527661122 Feb 2, 2026
e3f5cfd
Define CSpyder48 color and geometry constants
AYELET0527661122 Feb 2, 2026
5a6cb74
Add tests for SPYDERCHECKR24_V2 and SPYDERCHECKR48_V2
AYELET0527661122 Feb 2, 2026
708a100
Clean up include statements in checker_model.cpp
AYELET0527661122 Feb 2, 2026
8f15a13
Refactor comments and formatting in checker_model.cpp
AYELET0527661122 Feb 3, 2026
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3 changes: 3 additions & 0 deletions modules/mcc/include/opencv2/mcc/checker_model.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -48,6 +48,9 @@ enum TYPECHART
MCC24 = 0, ///< Standard Macbeth Chart with 24 squares
SG140, ///< DigitalSG with 140 squares
VINYL18, ///< DKK color chart with 12 squares and 6 rectangle
SPYDERCHECKR48_V2, // 6x8 = 48 squares
SPYDERCHECKR24_V2 // 6x4 = 24 squares


};

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47 changes: 47 additions & 0 deletions modules/mcc/src/checker_model.cpp
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Expand Up @@ -91,8 +91,55 @@ CChartModel::CChartModel(const TYPECHART chartType)
chart.resize(size.area(), std::vector<float>(9));
for(int color = 0 ; color < (int)chart.size() ; color++)
chart[color].assign(CChartVinylColors[color] , CChartVinylColors[color] + 9 );

break;
case SPYDERCHECKR48_V2: // SpyderCheckr 48 (v2)
size = cv::Size2i(6, 8);
boxsize = cv::Size2f(16.75f, 22.25f);
box.resize(4);
box[0] = cv::Point2f(0.00f, 0.00f);
box[1] = cv::Point2f(22.25f, 0.00f);
box[2] = cv::Point2f(22.25f, 16.75f);
box[3] = cv::Point2f(0.00f, 16.75f);

cellchart.assign(CSpyder48Cellchart, CSpyder48Cellchart + 4 * 48);
center.assign(CSpyder48Center, CSpyder48Center + 48);

chart.resize(size.area(), std::vector<float>(9));
for (int color = 0; color < (int)chart.size(); color++)
chart[color].assign(CSpyder48Colors[color], CSpyder48Colors[color] + 9);

break;
case SPYDERCHECKR24_V2:
{
CChartModel full(SPYDERCHECKR48_V2);
size = cv::Size2i(6, 4); // 4x6 = 24
boxsize = full.boxsize;
box = full.box;

cellchart.clear();
center.clear();
chart.clear();

const int rows = full.size.width;
const int cols = full.size.height;

for (int r = 0; r < rows; r++)
{
for (int c = 4; c < 8; c++)
{
int idxFull = r * cols + c;

for (int k = 0; k < 4; k++)
cellchart.push_back(full.cellchart[4 * idxFull + k]);

center.push_back(full.center[idxFull]);
chart.push_back(full.chart[idxFull]);
}
}

break;
}
}
}

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140 changes: 140 additions & 0 deletions modules/mcc/src/dictionary.hpp
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Expand Up @@ -1181,6 +1181,146 @@ const cv::Point2f CChartVinylCenter[18] = {

};

const float CSpyder48Colors[48][9] = {
{210,121,117, 61.35f, 34.81f, 18.38f, -1,-1,-1},
{218,203,201, 82.68f, 5.03f, 3.02f, -1,-1,-1},
{237,206,186, 85.42f, 9.41f, 14.49f, -1,-1,-1},
{241,233,229, 92.72f, 1.89f, 2.76f, -1,-1,-1},
{249,242,238, 96.04f, 2.16f, 2.60f, -1,-1,-1},
{ 0,127,159, 47.12f,-32.50f,-28.75f, -1,-1,-1},
{222,118, 32, 60.94f, 38.21f, 61.31f, -1,-1,-1},
{ 98,187,166, 70.19f,-31.90f, 1.98f, -1,-1,-1},

{216,179, 90, 75.50f, 5.84f, 50.42f, -1,-1,-1},
{203,205,196, 82.25f, -2.42f, 3.78f, -1,-1,-1},
{211,175,133, 74.28f, 9.05f, 27.21f, -1,-1,-1},
{229,222,220, 88.85f, 1.59f, 2.27f, -1,-1,-1},
{202,198,195, 80.44f, 1.17f, 2.05f, -1,-1,-1},
{192, 75,145, 50.49f, 53.45f,-13.55f, -1,-1,-1},
{ 58, 88,159, 37.80f, 7.30f,-43.04f, -1,-1,-1},
{126,125,174, 54.38f, 8.84f,-25.71f, -1,-1,-1},

{127,175,120, 66.82f,-25.10f, 23.47f, -1,-1,-1},
{206,203,208, 82.29f, 2.20f, -2.04f, -1,-1,-1},
{193,149, 91, 64.57f, 12.39f, 37.24f, -1,-1,-1},
{182,178,176, 73.42f, 0.99f, 1.89f, -1,-1,-1},
{161,157,154, 65.52f, 0.69f, 1.86f, -1,-1,-1},
{245,205, 0, 83.61f, 3.36f, 87.02f, -1,-1,-1},
{195, 79, 95, 49.81f, 48.50f, 15.76f, -1,-1,-1},
{ 82,106, 60, 42.03f,-15.80f, 22.93f, -1,-1,-1},

{ 66,157,179, 60.53f,-22.60f,-20.40f, -1,-1,-1},
{ 66, 57, 58, 24.89f, 4.43f, 0.78f, -1,-1,-1},
{139, 93, 61, 44.49f, 17.23f, 26.24f, -1,-1,-1},
{139,136,135, 57.15f, 0.57f, 1.19f, -1,-1,-1},
{122,118,116, 49.62f, 0.58f, 1.56f, -1,-1,-1},
{186, 26, 51, 41.05f, 60.75f, 31.17f, -1,-1,-1},
{ 83, 58,106, 28.88f, 19.36f,-24.48f, -1,-1,-1},
{ 87,120,155, 48.82f, -5.11f,-23.08f, -1,-1,-1},

{116,147,194, 59.66f, -2.03f,-28.46f, -1,-1,-1},
{ 54, 61, 56, 25.16f, -3.88f, 2.13f, -1,-1,-1},
{ 74, 55, 46, 25.29f, 7.95f, 8.87f, -1,-1,-1},
{100, 99, 97, 41.57f, 0.24f, 1.45f, -1,-1,-1},
{ 80, 80, 78, 33.55f, 0.35f, 1.40f, -1,-1,-1},
{ 57,146, 64, 54.14f,-40.80f, 34.75f, -1,-1,-1},
{157,188, 54, 72.45f,-23.60f, 60.47f, -1,-1,-1},
{197,145,125, 65.10f, 18.14f, 18.68f, -1,-1,-1},

{190,121,154, 59.15f, 30.83f, -5.72f, -1,-1,-1},
{ 63, 60, 69, 26.13f, 2.61f, -5.03f, -1,-1,-1},
{ 57, 54, 56, 22.67f, 2.11f, -1.10f, -1,-1,-1},
{ 63, 61, 62, 25.65f, 1.24f, 0.05f, -1,-1,-1},
{ 43, 41, 43, 16.91f, 1.43f, -0.81f, -1,-1,-1},
{ 25, 55,135, 24.75f, 13.78f,-49.48f, -1,-1,-1},
{236,158, 25, 71.65f, 23.74f, 72.28f, -1,-1,-1},
{112, 76, 60, 36.13f, 14.15f, 15.78f, -1,-1,-1},
};

// SpyderCheckr 48 (v2) geometry (8 cols x 6 rows)
const cv::Point2f CSpyder48Cellchart[4 * 48] = {
// Row 0 (y = 0.25 .. 2.75)
{0.25f, 0.25f}, {2.75f, 0.25f}, {2.75f, 2.75f}, {0.25f, 2.75f},
{3.00f, 0.25f}, {5.50f, 0.25f}, {5.50f, 2.75f}, {3.00f, 2.75f},
{5.75f, 0.25f}, {8.25f, 0.25f}, {8.25f, 2.75f}, {5.75f, 2.75f},
{8.50f, 0.25f}, {11.00f, 0.25f}, {11.00f, 2.75f}, {8.50f, 2.75f},
{11.25f, 0.25f}, {13.75f, 0.25f}, {13.75f, 2.75f}, {11.25f, 2.75f},
{14.00f, 0.25f}, {16.50f, 0.25f}, {16.50f, 2.75f}, {14.00f, 2.75f},
{16.75f, 0.25f}, {19.25f, 0.25f}, {19.25f, 2.75f}, {16.75f, 2.75f},
{19.50f, 0.25f}, {22.00f, 0.25f}, {22.00f, 2.75f}, {19.50f, 2.75f},

// Row 1 (y = 3.00 .. 5.50)
{0.25f, 3.00f}, {2.75f, 3.00f}, {2.75f, 5.50f}, {0.25f, 5.50f},
{3.00f, 3.00f}, {5.50f, 3.00f}, {5.50f, 5.50f}, {3.00f, 5.50f},
{5.75f, 3.00f}, {8.25f, 3.00f}, {8.25f, 5.50f}, {5.75f, 5.50f},
{8.50f, 3.00f}, {11.00f, 3.00f}, {11.00f, 5.50f}, {8.50f, 5.50f},
{11.25f, 3.00f}, {13.75f, 3.00f}, {13.75f, 5.50f}, {11.25f, 5.50f},
{14.00f, 3.00f}, {16.50f, 3.00f}, {16.50f, 5.50f}, {14.00f, 5.50f},
{16.75f, 3.00f}, {19.25f, 3.00f}, {19.25f, 5.50f}, {16.75f, 5.50f},
{19.50f, 3.00f}, {22.00f, 3.00f}, {22.00f, 5.50f}, {19.50f, 5.50f},

// Row 2 (y = 5.75 .. 8.25)
{0.25f, 5.75f}, {2.75f, 5.75f}, {2.75f, 8.25f}, {0.25f, 8.25f},
{3.00f, 5.75f}, {5.50f, 5.75f}, {5.50f, 8.25f}, {3.00f, 8.25f},
{5.75f, 5.75f}, {8.25f, 5.75f}, {8.25f, 8.25f}, {5.75f, 8.25f},
{8.50f, 5.75f}, {11.00f, 5.75f}, {11.00f, 8.25f}, {8.50f, 8.25f},
{11.25f, 5.75f}, {13.75f, 5.75f}, {13.75f, 8.25f}, {11.25f, 8.25f},
{14.00f, 5.75f}, {16.50f, 5.75f}, {16.50f, 8.25f}, {14.00f, 8.25f},
{16.75f, 5.75f}, {19.25f, 5.75f}, {19.25f, 8.25f}, {16.75f, 8.25f},
{19.50f, 5.75f}, {22.00f, 5.75f}, {22.00f, 8.25f}, {19.50f, 8.25f},

// Row 3 (y = 8.50 .. 11.00)
{0.25f, 8.50f}, {2.75f, 8.50f}, {2.75f, 11.00f}, {0.25f, 11.00f},
{3.00f, 8.50f}, {5.50f, 8.50f}, {5.50f, 11.00f}, {3.00f, 11.00f},
{5.75f, 8.50f}, {8.25f, 8.50f}, {8.25f, 11.00f}, {5.75f, 11.00f},
{8.50f, 8.50f}, {11.00f, 8.50f}, {11.00f, 11.00f}, {8.50f, 11.00f},
{11.25f, 8.50f}, {13.75f, 8.50f}, {13.75f, 11.00f}, {11.25f, 11.00f},
{14.00f, 8.50f}, {16.50f, 8.50f}, {16.50f, 11.00f}, {14.00f, 11.00f},
{16.75f, 8.50f}, {19.25f, 8.50f}, {19.25f, 11.00f}, {16.75f, 11.00f},
{19.50f, 8.50f}, {22.00f, 8.50f}, {22.00f, 11.00f}, {19.50f, 11.00f},

// Row 4 (y = 11.25 .. 13.75)
{0.25f, 11.25f}, {2.75f, 11.25f}, {2.75f, 13.75f}, {0.25f, 13.75f},
{3.00f, 11.25f}, {5.50f, 11.25f}, {5.50f, 13.75f}, {3.00f, 13.75f},
{5.75f, 11.25f}, {8.25f, 11.25f}, {8.25f, 13.75f}, {5.75f, 13.75f},
{8.50f, 11.25f}, {11.00f, 11.25f}, {11.00f, 13.75f}, {8.50f, 13.75f},
{11.25f, 11.25f}, {13.75f, 11.25f}, {13.75f, 13.75f}, {11.25f, 13.75f},
{14.00f, 11.25f}, {16.50f, 11.25f}, {16.50f, 13.75f}, {14.00f, 13.75f},
{16.75f, 11.25f}, {19.25f, 11.25f}, {19.25f, 13.75f}, {16.75f, 13.75f},
{19.50f, 11.25f}, {22.00f, 11.25f}, {22.00f, 13.75f}, {19.50f, 13.75f},

// Row 5 (y = 14.00 .. 16.50)
{0.25f, 14.00f}, {2.75f, 14.00f}, {2.75f, 16.50f}, {0.25f, 16.50f},
{3.00f, 14.00f}, {5.50f, 14.00f}, {5.50f, 16.50f}, {3.00f, 16.50f},
{5.75f, 14.00f}, {8.25f, 14.00f}, {8.25f, 16.50f}, {5.75f, 16.50f},
{8.50f, 14.00f}, {11.00f, 14.00f}, {11.00f, 16.50f}, {8.50f, 16.50f},
{11.25f, 14.00f}, {13.75f, 14.00f}, {13.75f, 16.50f}, {11.25f, 16.50f},
{14.00f, 14.00f}, {16.50f, 14.00f}, {16.50f, 16.50f}, {14.00f, 16.50f},
{16.75f, 14.00f}, {19.25f, 14.00f}, {19.25f, 16.50f}, {16.75f, 16.50f},
{19.50f, 14.00f}, {22.00f, 14.00f}, {22.00f, 16.50f}, {19.50f, 16.50f},
};

const cv::Point2f CSpyder48Center[48] = {
// Row 0 (y = 1.50)
{1.50f, 1.50f}, {4.25f, 1.50f}, {7.00f, 1.50f}, {9.75f, 1.50f},
{12.50f, 1.50f}, {15.25f, 1.50f}, {18.00f, 1.50f}, {20.75f, 1.50f},
// Row 1 (y = 4.25)
{1.50f, 4.25f}, {4.25f, 4.25f}, {7.00f, 4.25f}, {9.75f, 4.25f},
{12.50f, 4.25f}, {15.25f, 4.25f}, {18.00f, 4.25f}, {20.75f, 4.25f},
// Row 2 (y = 7.00)
{1.50f, 7.00f}, {4.25f, 7.00f}, {7.00f, 7.00f}, {9.75f, 7.00f},
{12.50f, 7.00f}, {15.25f, 7.00f}, {18.00f, 7.00f}, {20.75f, 7.00f},
// Row 3 (y = 9.75)
{1.50f, 9.75f}, {4.25f, 9.75f}, {7.00f, 9.75f}, {9.75f, 9.75f},
{12.50f, 9.75f}, {15.25f, 9.75f}, {18.00f, 9.75f}, {20.75f, 9.75f},
// Row 4 (y = 12.50)
{1.50f, 12.50f}, {4.25f, 12.50f}, {7.00f, 12.50f}, {9.75f, 12.50f},
{12.50f, 12.50f}, {15.25f, 12.50f}, {18.00f, 12.50f}, {20.75f, 12.50f},
// Row 5 (y = 15.25)
{1.50f, 15.25f}, {4.25f, 15.25f}, {7.00f, 15.25f}, {9.75f, 15.25f},
{12.50f, 15.25f}, {15.25f, 15.25f}, {18.00f, 15.25f}, {20.75f, 15.25f},
};

} // namespace mcc
} // namespace cv

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23 changes: 22 additions & 1 deletion modules/mcc/test/test_mcc.cpp
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Expand Up @@ -53,6 +53,20 @@ TEST(CV_mccRunCCheckerDrawTest, accuracy_VINYL18)
pChecker->setBox({{0, 0}, {480, 0}, {480, 640}, {0, 640}});
runCCheckerDraw(pChecker, 640, 480, 18);
}
TEST(CV_mccRunCCheckerDrawTest, accuracy_SPYDERCHECKR24_V2)
{
Ptr<CChecker> pChecker = CChecker::create();
pChecker->setTarget(SPYDERCHECKR24_V2);
pChecker->setBox({{0, 0}, {480, 0}, {480, 640}, {0, 640}});
runCCheckerDraw(pChecker, 640, 480, 24);
}
TEST(CV_mccRunCCheckerDrawTest, accuracy_SPYDERCHECKR48_V2)
{
Ptr<CChecker> pChecker = CChecker::create();
pChecker->setTarget(SPYDERCHECKR48_V2);
pChecker->setBox({{0, 0}, {480, 0}, {480, 640}, {0, 640}});
runCCheckerDraw(pChecker, 640, 480, 48);
}

/****************************************************************************************\
* Test detection works properly on the simplest images
Expand All @@ -75,11 +89,18 @@ TEST(CV_mccRunCCheckerDetectorBasic, accuracy_MCC24)
{
runCCheckerDetectorBasic("MCC24.png", MCC24);
}

TEST(CV_mccRunCCheckerDetectorBasic, accuracy_VINYL18)
{
runCCheckerDetectorBasic("VINYL18.png", VINYL18);
}
TEST(CV_mccRunCCheckerDetectorBasic, accuracy_SPYDERCHECKR24_V2)
{
runCCheckerDetectorBasic("Spyder24.png", SPYDERCHECKR24_V2);
}
TEST(CV_mccRunCCheckerDetectorBasic, accuracy_SPYDERCHECKR48_V2)
{
runCCheckerDetectorBasic("Spyder48.png", SPYDERCHECKR48_V2);
}

TEST(CV_mcc_ccm_test, detect_Macbeth)
{
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