{
    "image_size": {
      "width": 512,
      "height": 512
    },
    "coordinate_system": {
      "origin": "top_left",
      "x_axis": "to_right",
      "y_axis": "downward"
    },
    "objects": [
      {
        "id": "tilted_gray_u",
        "category": "u_shape",
        "color_rgb": [188, 200, 207],
        "position": {
          "center_x": 147.03,
          "center_y": 228.07
        },
        "bbox": {
          "x_min": 91,
          "y_min": 147,
          "x_max": 222,
          "y_max": 286,
          "width": 132,
          "height": 140
        },
        "size": {
          "area_pixels": 2755,
          "stroke_thickness_pixels": 8.79
        },
        "orientation": {
          "angle_deg": 57.58,
          "definition": "angle from +x axis, counter-clockwise"
        }
      },
      {
        "id": "tilted_gray_bar_top",
        "category": "line_segment",
        "color_rgb": [187, 199, 206],
        "position": {
          "center_x": 244.63,
          "center_y": 106.37
        },
        "bbox": {
          "x_min": 219,
          "y_min": 73,
          "x_max": 271,
          "y_max": 139,
          "width": 53,
          "height": 67
        },
        "size": {
          "area_pixels": 805,
          "length_pixels": 78.81,
          "thickness_pixels": 10.21
        },
        "orientation": {
          "angle_deg": -53.57,
          "definition": "angle from +x axis, counter-clockwise"
        }
      },
      {
        "id": "red_ball",
        "category": "circle",
        "color_rgb": [239, 79, 68],
        "position": {
          "center_x": 277.51,
          "center_y": 295.51
        },
        "bbox": {
          "x_min": 236,
          "y_min": 254,
          "x_max": 319,
          "y_max": 337,
          "width": 84,
          "height": 84
        },
        "size": {
          "area_pixels": 5523,
          "radius_pixels": 41.93
        }
      },
      {
        "id": "tilted_gray_bar_cross_1",
        "category": "line_segment",
        "color_rgb": [187, 200, 207],
        "position": {
          "center_x": 283.72,
          "center_y": 426.25
        },
        "bbox": {
          "x_min": 263,
          "y_min": 342,
          "x_max": 305,
          "y_max": 510,
          "width": 43,
          "height": 169
        },
        "size": {
          "area_pixels": 1105,
          "length_pixels": 172.67,
          "thickness_pixels": 6.40
        },
        "orientation": {
          "angle_deg": 77.51,
          "definition": "angle from +x axis, counter-clockwise"
        }
      },
      {
        "id": "tilted_gray_bar_cross_2",
        "category": "line_segment",
        "color_rgb": [187, 200, 207],
        "position": {
          "center_x": 284.29,
          "center_y": 426.16
        },
        "bbox": {
          "x_min": 263,
          "y_min": 342,
          "x_max": 305,
          "y_max": 510,
          "width": 43,
          "height": 169
        },
        "size": {
          "area_pixels": 1137,
          "length_pixels": 172.67,
          "thickness_pixels": 6.58
        },
        "orientation": {
          "angle_deg": -77.56,
          "definition": "angle from +x axis, counter-clockwise"
        }
      },
      {
        "id": "black_bar",
        "category": "line_segment",
        "color_rgb": [0, 0, 0],
        "position": {
          "center_x": 85.97,
          "center_y": 444.00
        },
        "bbox": {
          "x_min": 44,
          "y_min": 386,
          "x_max": 128,
          "y_max": 502,
          "width": 85,
          "height": 117
        },
        "size": {
          "area_pixels": 1395,
          "length_pixels": 136.79,
          "thickness_pixels": 10.20
        },
        "orientation": {
          "angle_deg": -55.42,
          "definition": "angle from +x axis, counter-clockwise"
        }
      }
    ]
  }