Method, apparatus, and computer-readable storage medium for area identification

A device for area identification, comprising:

• a processor;
• and
• a memory storing instructions that, when executed by the processor, cause the processor to:
• identify a plurality of candidate predefined edges in a document image of a document, the candidate predefined edges being edges in a predefined direction of the document;
• determine one of the candidate predefined edges to be a target predefined edge;
• and
• identify at least one information area in the document image based on the target predefined edge,
• wherein the instructions, when executed by the processor, further cause the processor to:
• sort the candidate predefined edges to obtain sorted candidate predefined edges;
• set one of the sorted candidate predefined edges as a trial predefined edge;
• perform an attempted identification of a target information area in the document image using the trial predefined edge and a relative positional relation between the target predefined edge and the target information area;
• if the attempted identification using the trial predefined edge is successful:
• determine the trial predefined edge to be the target predefined edge;
• and
• if the attempted identification using the trial predefined edge is not successful:
• set a next one of the sorted candidate predefined edge as a new trial predefined edge;
• and
• repeat the attempted identification of the target information area using the new trial predefined edge and the relative positional relation.

A non-transitory computer readable storage medium having stored therein instructions that, when executed by a processor of a device, cause the processor to:

• identify a plurality of candidate predefined edges in a document image of a document, the candidate predefined edges being edges in a predefined direction of the document;
• determine one of the candidate predefined edges to be a target predefined edge;
• and
• identify at least one information area in the document image based on the target predefined edge,
• wherein the instructions, when executed by the processor, further cause the processor to:
• sort the candidate predefined edges to obtain sorted candidate predefined edges;
• set one of the sorted candidate predefined edges as a trial predefined edge;
• perform an attempted identification of a target information area in the document image using the trial predefined edge and a relative positional relation between the target predefined edge and the target information area;
• if the attempted identification using the trial predefined edge is successful:
• determine the trial predefined edge to be the target predefined edge;
• and
• if the attempted identification using the trial predefined edge is not successful:
• set a next one of the sorted candidate predefined edge as a new trial predefined edge;
• and
• repeat the attempted identification of the target information area using the new trial predefined edge and the relative positional relation.