KR20050003075A - A mobile communication device with optical character recognition and electronic dictionary, an electronic dictionary with optical character recognition - Google Patents

Abstract

PURPOSE: An electronic dictionary having a character recognition function and a portable communication apparatus having the dictionary are provided to recognize the data, inputted through an external device, by words and to output and display the contents of each word by adding a character recognition function in order to increase the utilization of an electronic dictionary. CONSTITUTION: A portable communication apparatus having a character recognition function and an electronic dictionary comprises an input part(110), a control part(120), a data storage part(130), a button input part(140), an output part(150), a communication part(160), and a miscellaneous part(170). The input part(110) is to input an image photographed by a camera device or the data inputted written by an input pen device. The inputted data are transferred to the control part(120). The control part(120) executes character recognition processing for the inputted data. The data storage part(130) stores the reference data necessary for the character recognition of the control part(120) and the contents of the electronic dictionary. The output part(150) comprises a display part to recognize an inputted text and to display the inputted text. The communication part(160) is for data transmission and reception. The miscellaneous part(170) comprises an interface unit to be connected with an external equipment.

Description

A MOBILE COMMUNICATION DEVICE WITH OPTICAL CHARACTER RECOGNITION AND ELECTRONIC DICTIONARY, AN ELECTRONIC DICTIONARY WITH OPTICAL CHARACTER RECOGNITION}

The present invention relates to the provision of an electronic dictionary function using character recognition technology in a portable communication device.

In recent years, the mobile communication device has been widely equipped with a camera as a standard, and is continuously expanded to a basic additional device. Accordingly, interest in the utilization of the input image is increasing in addition to the simple photographing function of the camera. Until now, the camera provides only simple functions such as saving and loading images according to shooting functions.

Accordingly, the present invention is to improve the utilization of the camera device provided in the conventional portable device, and more particularly, to a device for outputting the contents of the electronic dictionary corresponding to the character recognition function and the recognized word by the character recognition technology on the screen will be.

In other words, it is intended to increase the utilization of the mobile communication device by having an electronic dictionary that can best express the utilization of the character recognition technology in the mobile communication device.

Also, in order to increase the utilization of the character recognition result, the recognized result is to provide a function of outputting related contents in an electronic dictionary having a word-by-word index.

In addition, when the portable communication device is equipped with a handwriting input device such as a digital pen in addition to the camera input method, it is to provide a function of recognizing an English word or Korean by a method of online handwriting recognition and outputting the content of the word.

This utility can be particularly important as a learning tool for students and provides high added value of mobile communication devices.

1 is an exemplary view showing a form of photographing a word in a document printed by a camera mounted on a mobile communication device according to one embodiment of the present invention;

2 is an exemplary view showing a dictionary content of a result of character recognition on a screen in a mobile communication device according to an embodiment of the present invention;

3 is a diagram illustrating an example of inputting a character by handwriting and inputting a character by a handwriting with an input tool mounted on a mobile communication device according to an embodiment of the present invention, and displaying an electronic dictionary content of the corresponding content on a screen;

4 is a system block diagram of a mobile communication device according to an embodiment of the present invention.

5 is a flowchart of character recognition processing.

* Description of the major symbols in the drawings *

100: Selection box 101: Input pen

102: the trajectory of the writing operation by the input pen

110: input unit # 120: control unit

130: data storage unit (electronic dictionary)

150: output unit

In order to solve the above problems, the present invention is to provide a processing method in a mobile communication device having a camera having a macro function or an input pen for online handwriting recognition.

In order to input characters through the camera, the image data resolution of about 300 DPI is required for character recognition. In the case of 300,000 pixels, the horizontal resolution of 600-700 pixels and the vertical resolution of 400-500 pixels are displayed on the display screen. The recognition processing area is approximately 55 mm x 38 mm. Therefore, 12-point Korean characters are about 12 characters long, and English characters can be up to 20 characters long. Therefore, images that can be processed for character recognition can be obtained for English characters or simple Korean words. If the camera resolution is 1 million pixels, it can recognize more letters in the area and can also be saved as a text file.

Recognize a word by selecting it through a selection box where a character to be recognized appears. Recognized letters are composed of words consisting of letters, and the electronic dictionary or the most similar words are found in the embedded electronic dictionary and output the corresponding contents.

4 shows an example of a system block diagram of a portable communication device equipped with a character recognition device and an electronic dictionary. 110 is an input unit including a device for inputting a captured image or pen trace data of a pen operation by a camera device or an input pen device, and the input data is sent to the controller 120. 120 is a control unit including a CPU such as a mobile communication device, which executes character recognition processing on data input from the input unit 110. In the character recognition process, the data storage unit 130 is referred to. 130 is a data storage unit for storing reference data necessary for character recognition and contents of an electronic dictionary. 140 denotes a button input unit for operation of various buttons located inside and outside the mobile communication device. The state when the button is pressed is sent to the control unit 120. 150 is an output unit including a display device for displaying what characters are input by recognizing input characters, 160 is a communication unit for transmitting and receiving data for communication, which is an original function of a mobile communication device, and 170 is an external device. Other device provided with an interface device that can be connected.

The character recognition is a method of analyzing and recognizing data input by the input unit 110 such as a camera device or an input pen into the control unit 120 of the mobile communication device and recognizing and processing it as meaningful data or execution command.

Recognition processing is generally the best data for character recognition through angle correction, unnecessary image removal and image enhancement in case of data from camera, and this preprocessed data is divided into character units The segmentation process recognizes the segmented image. Recognition processing method is largely divided into structural method and statistical method. The structural method mainly analyzes the structure and shape of the character by analyzing thin lines and trajectories of the character. How to do it. On the other hand, the statistical method extracts the feature points from the image in character units and stores them in memory in character units, and when a new image comes in, extracts the feature points and compares and analyzes the characteristics of the character units in the stored memory to find the most similar characters. How to print

5 shows a processing diagram as an embodiment of a general character recognition processing method. In order to recognize the character by the statistical character recognition method, the characteristics of the character must be stored through the learning process. Through this learning process, the recognition process is performed through the recognition process after the feature data for the character is provided. First, the learning process of FIG. 5 (a) will be described.

In step 200, an image of a character is read through an input device such as a scanner or a digital camera. In step 210, preprocessing of image data on the character input in step 200 is performed. This preprocessing mainly performs image enhancement and tilt correction to optimize the image to an optimal image state for removing the surrounding images and character recognition, and segments the character image by the character unit.

In operation 220, a feature extraction operation is performed to extract a feature from an image of a character unit. Although there are various feature extraction methods, the Crossing Point method, which is a simple and efficient feature of the processor, will be described as an example. The text image is divided into 16 * 16 areas, and a straight line drawn at 0, 45, 90, 135, 180, 225, 270, and 315 degrees from the center of each area to the character image border. The number of encounters is counted and extracted as feature data. In step 230, reference data having a deviation and an average value is constructed through statistical processing of the input feature data for each character code using the feature data extracted in step 220 and the corresponding character code.

In the character recognition processing method of FIG. 5 (b), the processing methods from step 200 to step 220 of FIG. 5 (a) are the same. In step 240, the data having the highest similarity is detected by comparing the reference data which is the feature data corresponding to each character code constructed in the learning process and the feature data extracted in step 220 of the recognition process, and the character corresponding to the character code is recognized. Output as a result.

In the case of the input pen, input data by the digitizer or other pointing device included in the mobile communication device is recognized by a predetermined recognition method, and the recognition result is output. The meaning of the word corresponding to the recognition result is found in the electronic dictionary. Is configured to output. A handwriting input device such as an input pen is configured to input a trajectory of movement of the device as data, and the input data executes a recognition process for a handwritten character in an internal CPU. The recognition result is composed of codes for characters and is implemented to output the contents of the electronic dictionary. The data input through the input pen consists of the trajectory data of the movement of the device (handwriting), which is the unit of stroke based on the trajectory data corresponding to the stroke data from down to up of the pen. Recognition processing is performed with the data of the stroke, and the stroke structure that forms the character by analyzing the structure of the stroke is recognized by the Hangul characters through the recognition of the stroke unit or the positional relationship between the front and rear strokes and the character formation state. For example, in the case of '??', the recognition process is performed by analyzing whether there is a trajectory component in the horizontal direction to the right or greater than a certain size at first, and then the downward or leftward trajectory component from the bending point.

The use example of the present invention as described above will be described.

First, the case where the input unit is configured by a scanner or a camera will be described with reference to Figs.

Printed text, for example newspapers or books, is scanned or photographed with a scanner or camera-equipped mobile communication device. An image for each character is extracted from the scanned or photographed image to recognize the character and display the recognized character through the output unit (FIG. 1).

If there is a word whose meaning is not recognized among words recognized and displayed, move the cursor to select the corresponding character. The mobile communication device searches for and displays the meaning of the selected word in the electronic dictionary (FIG. 2).

In the above example, all of the input image has been processed for character recognition, but is not limited thereto.

Once the input image is displayed as an output unit, a specific word can be selected from among them, the recognized word can be found and displayed in the electronic dictionary. At this time, as a method of selecting a word, it is conceivable to select a character to be recognized by forming a selection box (symbol 100 in FIG. 1) on the screen, and moving the device so that the character to be recognized falls into the selection box.

On the other hand, the case where the said input part is comprised with an input pen is demonstrated.

First, enter words by writing each letter with the input pen. The portable communication apparatus which receives a word as data on a trajectory of each character compares the trajectory data with previously stored trajectory data and recognizes and recognizes each character to recognize the word. After that, the meaning of the recognized word is found in the electronic dictionary and the explanation of the meaning is displayed along with the recognized word. As an example, in FIG. 3, first, the trajectory of 'd', 'e', 'v', 'i', 'c', and 'e' is drawn by using the input pen 101. The portable communication device receiving the locus data recognizes each character by comparing the locus data with the locus data for each character previously stored. After that, the recognized word "device" is found in the electronic dictionary, and the recognized word is displayed along with an explanation of its meaning.

In the above, the case where a mobile communication device such as a mobile phone is provided with an input unit such as a scanner or an input pen has been described. However, an electronic dictionary may include an input unit such as a scanner or an input pen to input words into a scanner or an input pen. . In addition to the keyboard provided in the conventional electronic dictionary, it is possible to input a word to be searched with an input pen or the like, which makes the electronic dictionary easier to write.

As described above, the portable communication device of the present invention includes a character recognition function to enhance the utilization of the electronic dictionary as an additional function of the mobile communication device, and processes the data inputted to the external device for each word and electronically processes the contents of the word. It is output from the dictionary so that it can be seen on the screen.

The external device is a camera or a small pen-type pointing input device mounted on a mobile communication device. The data input by the camera is character image data, and the data input by the pen-type input tool is the bulk data of the writing operation. As such, the data input from the external device is recognized to obtain data in units of characters. The result of the recognition process is to search the electronic dictionary as the index of the electronic dictionary and to display the result of the searched contents on the screen display device, thereby increasing the usability of the mobile communication device and the added value of the product.

In addition, when a word is input with a scanner or an input pen in an electronic dictionary, the input is much simpler.

Claims (8)

As a mobile communication device, An input unit that receives data about a character, A storage unit which stores data representing characteristics of each character and data about a dictionary; An output unit for displaying recognized characters and dictionary contents, A control unit for controlling the device, Analyze the data received from the input unit, refer to the data representing the characteristics of each character stored in the storage unit, recognize the character corresponding to the input data, and find the word composed of the recognized characters in the electronic dictionary. To display on the output Characterized in that the mobile communication device. The method of claim 1, The input unit consists of a scanner, The data for the characters is the image data scanned with the scanner. A mobile communication device, characterized in that. The method of claim 1, The input unit is composed of an input pen, The data for a character is the trajectory data of the handwriting motion for that character. A mobile communication device, characterized in that. The method of claim 1, The input unit is composed of a camera, Data about text is image data captured by the camera. A mobile communication device, characterized in that. The method of claim 4, wherein Display the input image on the display and select the recognition target from the displayed images. A mobile communication device, characterized in that. The method of claim 5, Form a selection box on the display unit, and move the device to select a character A mobile communication device, characterized in that. As an electronic dictionary, An input unit that receives data about a character, A storage unit which stores data representing characteristics of each character and data about a dictionary; An output unit which displays data on input characters, recognized characters, and dictionary contents; A control unit for controlling the device, Analyze the data received from the input unit, refer to the data representing the characteristics of each character stored in the storage unit, recognize the character corresponding to the input data, and find the word composed of the recognized characters in the electronic dictionary. To display on the output An electronic dictionary characterized by. The method of claim 7, wherein The input unit is composed of an input pen, The data for a character is the trajectory data of the handwriting motion for that character. Electronic dictionary, characterized in that.