test: don't use points on single line for solvePnP

modules/calib3d/test/test_solvepnp_ransac.cpp

@@ -322,10 +322,12 @@ TEST(Calib3d_SolvePnPRansac, input_type)
 
     std::vector<cv::Point3f> points3d;
     std::vector<cv::Point2f> points2d;
-    for (int i = 0; i < numPoints; i++)
+    for (int i = 0; i < numPoints; i+=2)
     {
-        points3d.push_back(cv::Point3i(i, 0, 0));
-        points2d.push_back(cv::Point2i(i, 0));
+        points3d.push_back(cv::Point3i(5+i, 3, 2));
+        points3d.push_back(cv::Point3i(5+i, 3+i, 2+i));
+        points2d.push_back(cv::Point2i(0, i));
+        points2d.push_back(cv::Point2i(-i, i));
     }
     Mat R1, t1, R2, t2, R3, t3, R4, t4;
 
@@ -359,12 +361,16 @@ TEST(Calib3d_SolvePnP, double_support)
     std::vector<cv::Point2d> points2d;
     std::vector<cv::Point3f> points3dF;
     std::vector<cv::Point2f> points2dF;
-    for (int i = 0; i < 10 ; i++)
+    for (int i = 0; i < 10 ; i+=2)
     {
-        points3d.push_back(cv::Point3d(i,0,0));
-        points3dF.push_back(cv::Point3d(i,0,0));
-        points2d.push_back(cv::Point2d(i,0));
-        points2dF.push_back(cv::Point2d(i,0));
+        points3d.push_back(cv::Point3d(5+i, 3, 2));
+        points3dF.push_back(cv::Point3d(5+i, 3, 2));
+        points3d.push_back(cv::Point3d(5+i, 3+i, 2+i));
+        points3dF.push_back(cv::Point3d(5+i, 3+i, 2+i));
+        points2d.push_back(cv::Point2d(0, i));
+        points2dF.push_back(cv::Point2d(0, i));
+        points2d.push_back(cv::Point2d(-i, i));
+        points2dF.push_back(cv::Point2d(-i, i));
     }
     Mat R,t, RF, tF;
     vector<int> inliers;