{
        "#": "opencv-findcorners 8 6 test.jpg",
        "points":
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          {"realh":  6, "realv":  4, "pixx":  534.50592, "pixy":  333.73859},
          {"realh":  7, "realv":  4, "pixx":  599.04767, "pixy":  334.47461},
          {"realh":  0, "realv":  5, "pixx":   21.66361, "pixy":  421.24649},
          {"realh":  1, "realv":  5, "pixx":  126.64940, "pixy":  421.24136},
          {"realh":  2, "realv":  5, "pixx":  225.54074, "pixy":  419.52023},
          {"realh":  3, "realv":  5, "pixx":  317.67703, "pixy":  417.40497},
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          "# (additional item to allow comma above)"
        ]
      },