text: blocks.register({
      name: "BlobDetect",
      family: "Image",
      description: "Blob detection",
      fields: [
          {
              name: "Threshold",
              type: "number",
              defaultValue: 0.2,
              attrs: "editable"
          },
          {
              name: "Image",
              type: "image",
              attrs: "input",
              card: "1"
          },
          {
              name: "X",
              type: "number",
              attrs: "output"
          },
          {
              name: "Y",
              type: "number",
              attrs: "output"
          }
      ]
  });
  