Handwritten document processing apparatus and method

A handwritten document processing method comprising:

• inputting stroke data;
• classifying the stroke data into data of a plurality of ruled lines and stroke data other than ruled lines;
• dividing a region including the plurality of ruled lines into first regions each corresponding to a cell bounded by four ruled lines and second regions each including at most three ruled lines;
• and
• determining whether a ruled line in the second region is a first ruled line, to one end point of which a ruled line is not connected, or a second ruled line, to one end point of which a virtual circumscribed ruled line is connected.

A non-transitory recording medium that stores a program for controlling a computer to function as:

• an inputter that inputs stroke data;
• a classifier that classifies the stroke data into data of a plurality of ruled lines and stroke data other than ruled lines;
• a divider that divides a region including the plurality of ruled lines into first regions each corresponding to a cell bounded by four ruled lines and second regions each including at most three ruled lines;
• and
• a determiner that determines whether a ruled line in the second region is a first ruled line, to one end point of which a ruled line is not connected, or a second ruled line, to one end point of which a virtual circumscribed ruled line is connected.

A handwritten document processing apparatus comprising:

• an inputter that inputs stroke data;
• a classifier that classifies the stroke data into data of a plurality of ruled lines and stroke data other than ruled lines;
• a divider that divides a region including the plurality of ruled lines into first regions each corresponding to a cell bounded by four ruled lines and second regions each including at most three ruled lines;
• and
• a controller that controls a display to remove a small extension included in the second regions so that the small extension is not displayed.

A handwritten document processing apparatus comprising:

• an inputter that inputs stroke data;
• a classifier that classifies the stroke data into data of a plurality of ruled lines and stroke data other than ruled lines;
• a divider that divides a region including the plurality of ruled lines into first regions each corresponding to a cell bounded by four ruled lines and second regions each including at most three ruled lines based on a number of intersections or a number of ruled lines;
• and a display that displays a virtual circumscribed ruled line for the second regions.