JPH09305713A - Pattern recognition system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To recognize characters with high efficiency and at low cost by canceling partly or totally a handwrite information recognition routine against the written special characters and the writing way of a person who inputted the characters. SOLUTION: The characters inputted via a handwritten character input means 11 are expanded into various information including the vector, the writing order, the number of strokes, the character shapes, etc., by an input switching means 12. Based on these information, a handwritten character recognition means 13 recognizes characters via a recognition dictionary 15. A right-handed person writes the characters from the left to the right but a left-handed person is liable to write the characters from the right to the left. When a recognition means 18 inputs and designates the left-hander information, the vector information on the dictionary 15 is masked by a dictionary mask designation means 19, i.e., deleted out of the dictionary 15. Then the means 13 refers to the dictionary 15 and recognizes the handwritten characters. Under such conditions, no dictionary exists for the vector information and the recognition rate is improved even for the characters which are written by the left-handed person.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a character recognition system.

[0002]

2. Description of the Related Art In recent years, due to the development of multimedia equipment, the number of personal computers, office automation equipment, and multimedia products having a wide variety of functions has increased, and portable information terminals equipped with the functions of a personal computer and which can be carried easily. Has become popular. A handwritten character input method has become the mainstream as an input means of the portable information terminal, and it has been required to improve the handwritten character recognition rate.

The conventional handwritten character recognition system is provided with several types of handwritten information recognition routines such as a character recognition system for recognizing ordinary handwritten characters and a system for recognizing the presence or absence of a specific stroke group from the handwritten characters. The handwritten character was recognized by judging the handwritten input character by several kinds of handwriting information recognition routines.

FIG. 3 shows a system function block having a conventional character recognition system.

In FIG. 3, in the character registration mode, the registration means 3
Under the control of 7, the handwritten character recognition unit 31 outputs the handwritten character through the input switching unit 32, and the input element designating unit 36 outputs the input element (character or character string), and both the handwritten character information and the input element information are output. Is registered in the registration area of the recognition dictionary 35 as a dictionary for recognizing handwritten characters.

The characters input from the handwritten character input means 31 are sent to the handwritten character recognition means 33 by the input switching means 32, and the recognition dictionary 3 consisting of a fixed area and a registered area.
5, the recognition is performed, and the recognition result is output through the code converting means 34.

[0007]

The conventional handwritten character recognition system has several kinds of handwritten information recognition routines, and judges handwritten input characters by these several kinds of handwritten information recognition routines to recognize handwritten characters.

However, in order to perform high-level handwritten character recognition, the number of handwritten information recognition routines increases, and the handwritten information recognition routine for recognizing handwritten characters, on the contrary, can hinder character recognition. .

An object of the present invention is to provide a means for preventing erroneous recognition due to this many handwritten information recognition routines.

[0010]

In order to achieve the above object, a part or all of a handwriting information recognition routine can be released.

Thus, when performing handwritten character recognition, the recognition rate of handwritten characters can be increased by canceling a part or all of the handwriting information recognition routine.

In the above character recognition method, when the user cancels a part or all of the handwriting information recognition routine,
The recognition rate of handwritten characters can be improved by preventing misrecognition expressions due to left-handed right-handed users and habits of users.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 shows the configuration of an information processing apparatus to which the present invention is applied.

The information processing apparatus is the information processing apparatus main body 20, and includes a CPU 21 for executing a program, a ROM 22 for storing a program and a dictionary to be executed, an SRAM 23 for storing an arbitrary set value as a registered dictionary, and a program for executing the program. Main RAM 24 used as a work area, I / O port 25 for input / output, tablet control unit 26 for controlling the tablet, display control unit 27 for controlling the display, VRAM for storing display data to the display
Composed of 28 mag. The integrated liquid crystal panel 30 includes a tablet 21 connected to the tablet controller 26, a liquid crystal display 22 connected to the display controller 27, and the like.

In this embodiment, the handwritten character input means 11 shown in FIG. 1 is realized by the tablet 31. The registration area of the recognition dictionary 25 is realized by SRAM, and the fixed area is realized by ROM 22. Each other means is realized by a program or the like.

The character input from the handwritten character input means 11 is expanded by the input switching means 12 into various information such as vector information, stroke order, number of strokes, and shape. The handwriting character recognizing means 13 refers to the recognition dictionary 15 for these pieces of information to perform character recognition. At this time, the recognition dictionary 15 stores vector information,
A recognition dictionary (z) is stored from a recognition dictionary (a) that is a dictionary of various information such as stroke order, stroke count, and shape, and a registration dictionary (z) is stored from a registration dictionary (a) in which an individual registers information such as cursive characters. The recognition dictionary 15 determines various information and performs character recognition. At this time, all of the recognition dictionary (a) to the recognition dictionary (z) and the registration dictionary (a) to the registration dictionary (z) are included. The recognition rate may decrease if you perform character recognition in. For example, when a right-handed person writes letters, it is common to carry the brush from left to right, but when a left-handed person writes letters, the brush is carried from right to left. If the information is recognized, the possibility of misrecognition increases. Therefore, when the recognition specifying means 18 inputs and specifies left-handed information, the dictionary mask specifying means 19 masks the vector information of the recognition dictionary and deletes it from the recognition dictionary 15, and the handwriting character recognition means 13 recognizes the recognition dictionary. When referring to 15 and recognizing, the recognition rate is improved even for characters written by a left-handed person without a dictionary of vector information.

[0018]

According to the present invention, for a special character or writing style of a character inputting person, a part or all of the handwriting information recognition routine is canceled so that the character can be recognized inexpensively and efficiently. You can

[Brief description of drawings]

FIG. 1 is a block diagram showing the principle of an embodiment of the present invention,

FIG. 2 is a block diagram of hardware that is an embodiment of the present invention.

FIG. 3 is a block diagram of a conventional character recognition method.

[Explanation of symbols]

11 ... handwritten character input means, 12 ... input switching means,
13 ... Handwritten character recognition means, 14 ... Code conversion means, 1
5 ... Recognition dictionary, 16 ... Input element designation means, 17 ... Registration means, 18 ... Recognition element designation means, 19 ... Dictionary mask designation means.

Claims (1)

[Claims] 1. A character recognition system, wherein in a computer system having a handwritten character input means and a handwritten character recognition means, a part or all of various recognition conditions for character recognition can be canceled.