Determination of indentation levels of a bulleted list

A non-transitory computer readable medium having stored thereon computer readable instructions that, when executed by a hardware processor, cause a data processing system to perform a method for determining indentation levels of a bulleted list in an image, the bulleted list having a plurality of bullets that are vertically arranged, each bullet having a horizontal position, the method performed by the data processing system comprising:

• performing a plurality of comparison cycles, wherein each comparison cycle is performed on a pair of vertically adjacent bullets, each pair includes a current bullet and a next bullet that is vertically adjacent to the current bullet, the plurality of comparison cycles includes a first comparison cycle and a second comparison cycle following the first comparison cycle, the next bullet of the first comparison cycle becomes the current bullet of the second comparison cycle,
• wherein the performance of each of the comparison cycles includes:
• obtaining an index position if the comparison cycle is the first comparison cycle,
• determining whether or not a difference between the horizontal position of the current bullet and the horizontal position of the next bullet satisfies a comparison requirement to identify the current bullet and the next bullet as being alike in indentation level,
• adjusting the horizontal position of the next bullet according to the index position when the comparison requirement is satisfied, and
• adjusting the index position when the comparison requirement is not satisfied,
• wherein the image containing the bulleted list does not encode aggregation of the bullets into indentation levels, and the method performed by the data processing system further comprises:
• before the performance of the plurality of comparison cycles, deriving the horizontal position of each of the bullets from the image;
• and
• after the performance of the plurality of comparison cycles, generating a list object that encodes aggregation of the bullets into indentation levels according to the plurality of comparison cycles.

A data processing system for determining indentation levels of a bulleted list in an image, the bulleted list having a plurality of bullets that are vertically arranged, each bullet having a horizontal position, the system comprising:

• a hardware processor;
• and
• one or more memory devices associated with the hardware processor;
• wherein the hardware processor is configured to determine indentation levels by performing a method that comprises:
• performing a plurality of comparison cycles, wherein each comparison cycle is performed on a pair of vertically adjacent bullets, each pair includes a current bullet and a next bullet that is vertically adjacent to the current bullet, the plurality of comparison cycles includes a first comparison cycle and a second comparison cycle following the first comparison cycle, the next bullet of the first comparison cycle becomes the current bullet of the second comparison cycle,
• wherein the performance of each of the comparison cycles includes:
• obtaining an index position if the comparison cycle is the first comparison cycle,
• determining whether or not a difference between the horizontal position of the current bullet and the horizontal position of the next bullet satisfies a comparison requirement to identify the current bullet and the next bullet as being alike in indentation level,
• adjusting the horizontal position of the next bullet according to the index position when the comparison requirement is satisfied, and
• adjusting the index position when the comparison requirement is not satisfied,
• wherein the image containing the bulleted list does not encode aggregation of the bullets into indentation levels, and the method performed by the hardware processor further comprises:
• before the performance of the plurality of comparison cycles, deriving the horizontal position of each of the bullets from the image;
• and
• after the performance of the plurality of comparison cycles, generating a list object that encodes aggregation of the bullets into indentation levels according to the plurality of comparison cycles.