key | values | description |
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id (required) | checkbox | |
position | left, right | Searches horizontally for a checkbox starting at the left or right anchor line boundaries and ending at the page margin. |
offsetX | number in inches. default: 0 | Indicates a point inside the checkbox. Instead of searching horizontally, Sensible expands the search out in all directions from the point specified to find the checkbox bounding box. For difficult pixel recognition, for example for large checkboxes or selection marks with no borders, use the offset parameters in combination with Width and Height parameters to define the selection mark region. |
offsetY | number in inches. default: 0 | Indicates a point inside the checkbox. Instead of searching horizontally, Sensible expands the search out in all directions from the point specified to find the checkbox bounding box.For difficult pixel recognition, for example for large checkboxes or selection marks with no borders, use the offset parameters in combination with Width and Height parameters to define the selection mark region. |
width | number in inches. default: none | For pixel recognition: Configure this parameter for pixel recognition of checkboxes larger than the default supported size, or for checkboxes with discontinuous or missing borders.The Width and Height parameters define a region in which to find a selection mark. Specify a region inside the checkbox borders that doesn’t touch the borders. |
height | number in inches. default: none | For pixel recognition: Configure this parameter for pixel recognition of checkboxes larger than the default supported size, or for checkboxes with discontinuous or missing borders.The Width and Height parameters define a region in which to find a selection mark. Specify a region inside the checkbox borders that doesn’t touch the borders. |
darknessThreshold | number between 1 and 0. | For pixel recognition: The brightness threshold below which to consider a pixel a box boundary. White is 1.0. Configure this parameter for checkboxes with dark backgrounds relative to the surrounding background.If the document has dark or mottled background, for example as the result of a scan, then Sensible automatically chooses a default value based on the amount of contrast in the document. |
Example document | Download link |
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