Segmentation of handwritten patterns using stroke and jump vectors

Claim 2

A pattern delimiting method, comprising the steps of: preparing a dictionary storing a string of stroke data each of which defined from a point of start of contact to a point of end of contact and jump vector data, which is represented as a movement from an end of contact point of one stroke to a start of contact point of a next stroke and feature data of the string corresponding to each other, said feature data indicating whether or not the string of stroke data and jump vector data forms an individual pattern; matching an inputted string of stroke data and jump vector data with the string of stroke data and jump vector data stored in the dictionary beforehand and obtaining feature data of the matched string of stroke data and jump vector data from the dictionary; and delimiting a string of stroke data and jump vector data composing an individual pattern from the inputted string of stroke data based on the feature data obtained from the matching.

Claim 3

The delimiting method according to claim 1, wherein said feature data includes data showing whether or not a last stroke data in the set of stroke data is at an end of the individual pattern.

Claim 4

The delimiting method according to claim 1, wherein said stroke data corresponds to patterns represented by coordinates.

Claim 5

The pattern delimiting method according to claim 1, wherein said storing of stroke data and jump vector data are inputted from a digitizer.

Claim 6

The pattern delimiting method according to claim 1, wherein said coordinate data is inputted as data representing a position where an input pen is pressed on an input-tablet having electrode lines wired in vertical and horizontal directions.

Claim 7

A pattern delimiting apparatus comprising: means for storing a dictionary including a string of stroke data each of which is defined from a point of start of contact to a point of end of contact and jump vector data, each of which is represented as a movement from an end of contact point of one stroke to a start of contact point of a next stroke, and feature data of the string corresponding to each other, said feature data indicating whether or not the string of stroke data and jump vector data forms an individual pattern; means for matching an inputted string of stroke data and jump vector data with the string of stroke data and jump vector data stored in the dictionary beforehand and obtaining feature data of the matched string of stroke data and jump vector data from the dictionary; and means for delimiting a string of stroke data and jump vector data composing an individual pattern from the inputted string of stroke data based on the feature data obtained from said matching means.

Claim 8

A pattern delimiting apparatus comprising: means for storing a dictionary including a string of stroke data each of which is defined from a point of start of contact to a point of end of contact and jump vector data, each of which is represented as a movement from an end of contact point of one stroke to a start of contact point of a next stroke, and feature data of the string corresponding to each other, said feature data indicating whether or not the string of stroke data and jump vector data forms an individual pattern; means for matching an inputted string of stroke data and jump vector data with the string of stroke data and jump vector data stored in the dictionary beforehand and obtaining feature data of the matched string of stroke data and jump vector data from the dictionary; and means for delimiting a string of stroke data and jump vector data composing an individual pattern from the inputted string of stroke data based on the feature data obtained from said matching means.

Claim 9

The delimiting apparatus according to claim 6, wherein said feature data includes data showing whether or not a last stroke data in the set of stroke data is at an end of the individual pattern.

Claim 10

The delimiting apparatus according to claim 6, wherein said stroke data corresponds to inputted patterns represented by coordinates.

Claim 11

The pattern delimiting method according to claim 6, wherein said storing of stroke data and jump vector data are inputted from a digitizer.

Claim 12

The pattern delimiting method according to claim 6, wherein said coordinate data is inputted as data representing a position where an input pen is pressed on an input-tablet having electrode lines wired in vertical and horizontal directions.

Claim 13

A pattern delimiting method comprising the steps of: inputting coordinate data of patterns and contact data of a pointing device; extracting one or more strokes and one or more jump vectors from said coordinate data and said contact data, wherein each of said strokes is defined from a point of start of contact to a point of end of contact of the pointing device and each of said jump vectors is represented as a movement from an end of contact point of one stroke to a start of contact point of a next stroke; and judging whether each of said jump vectors is in the middle of an individual pattern or between two individual patterns based upon a set of the jump vector and strokes before and after the jump vector, and an order thereof.

Claim 14

A pattern delimiting method comprising the steps of: inputting coordinate data of patterns and contact data of a pointing device; extracting one or more strokes and one or more jump vectors from said coordinate data and said contact data, wherein each of said strokes is defined from a point of start of contact to a point of end of contact of the pointing device and each of said jump vectors is represented as a movement from an end of contact point of one stroke to a start of contact point of a next stroke; and judging whether each of said jump vectors is in the middle of an individual pattern or between two individual patterns based upon a set of the jump vector and strokes before and after the jump vector, and an order thereof.

Claim 15

The pattern recognition method according to claim 11, wherein said coordinate data is inputted from a digitizer.

Claim 16

The pattern recognition method according to claim 11, wherein said coordinate data is inputted as data representing a position where an input pen is pressed on an input-tablet having electrode lines wired in vertical and horizontal directions.

Claim 17

A pattern delimiting apparatus comprising: means for inputting coordinate data of patterns and contact data of a pointing device; means for extracting one or more strokes and one or more jump vectors from said coordinate data and said contact data, wherein each of said strokes is defined from a point of start of contact to a point of end of contact of the pointing device and each of said jump vectors is represented as a movement from an end of contact point of one stroke to a start of contact point of a next stroke; and means for judging whether each of said jump vectors is in the middle of an individual pattern or between two individual patterns based upon a set of the jump vector and strokes before and after the jump vector, and an order thereof.

Claim 18

A pattern delimiting apparatus comprising: means for inputting coordinate data of patterns and contact data of a pointing device; means for extracting one or more strokes and one or more jump vectors from said coordinate data and said contact data, wherein each of said strokes is defined from a point of start of contact to a point of end of contact of the pointing device and each of said jump vectors is represented as a movement from an end of contact point of one stroke to a start of contact point of a next stroke; and means for judging whether each of said jump vectors is in the middle of an individual pattern or between two individual patterns based upon a set of the jump vector and strokes before and after the jump vector, and an order thereof.

Claim 19

The pattern recognition method according to claim 14, wherein said coordinate data is inputted from a digitizer.

Claim 20

The pattern recognition method according to claim 14, wherein said coordinate data is inputted as data representing a position where an input pen is pressed on an input-tablet having electrode lines wired in vertical and horizontal directions.