KR20050105051A - A apparatus and method for changing direction in mobile communication terminal with digital camera - Google Patents

Abstract

The present invention relates to a 3D game direction switching device and a method of a mobile communication terminal having a camera to change the direction through the change of the image input to the camera during the 3D game, the external changes according to the user's movement A camera that receives an image, an image processor which reduces the image input by the camera to a predetermined size, converts the reduced image into a gray scale, and outputs the gray scale image data output by the image processor; And a control unit for converting the direction and distance of the character in the game as much as the data for the direction and distance calculated by the direction change recognition unit, by comparing the image data stored in the input direction and distance; In addition, the camera receives and stores the image, and the stored image data Comparing the input and stored image data to search for a location having the highest similarity, calculating a direction and distance at which the terminal moves through the searched location, and moving a character in the game by the calculated direction and distance. By the steps, it is possible to change the direction of the character in the game through the user's movement, and increase the user's interest in the game.

Description

3D game direction switching device of mobile communication terminal with camera and its method {A APPARATUS AND METHOD FOR CHANGING DIRECTION IN MOBILE COMMUNICATION TERMINAL WITH DIGITAL CAMERA}

The present invention relates to a 3D game direction switching device and a method of a mobile communication terminal having a camera, and more particularly, to a mobile communication terminal having a camera to change the direction by changing the image input to the camera during the 3D game It relates to a 3D game direction switching device and a method thereof.

As the technology of the mobile communication terminal develops and the needs of users using the terminal increase, various functions are added to the terminal. That is, the basic voice call function and message transmission / reception function using the terminal as well as the search function through the Internet connection are possible. In addition, when a terminal is equipped with a camera, the camera may also perform a picture taking and video capturing function, and transmit the captured picture and video to another person using the Internet or a predetermined message (eg, MMS) function.

As such, many functions are added to the terminal, and nowadays, games are basically built in the terminal to eliminate boredom during the movement time, such as when the user moves by means of transportation during production, and the user uses the Internet. You can also download and use the game from the game server.

Among these games, there are three-dimensional (3D) games, the most important thing in the 3D game is to match the user's gaze with the characters in the game. In the conventional method of playing a 3D game in a mobile terminal, the game is executed, and the direction of the character in the game is changed by using a direction key or a preset direction change key provided in the keypad.

However, the direction change using only the direction key has a disadvantage that the user is immersed in the game because there is a sensory barrier because only the character moves in the fixed screen.

As described above, when playing a 3D game in a conventional mobile communication terminal, the direction change should be made only by a direction key or a predetermined direction change key provided on the keypad. There was a problem that was difficult to immerse in.

Therefore, in view of the above problems, the present invention compares the image processing data processed by the image processing unit and the image processing unit that processes the image input to the camera during the 3D game, detects the direction and outputs predetermined data for changing the direction of the character. 3D game direction change device and method of the mobile communication terminal having a camera that can change the direction of the character in the game through the user's movement, and increase the user's interest in the game by providing a direction change recognition unit The purpose is to provide.

3D game direction switching device of a mobile communication terminal having a camera of the present invention for achieving the above object comprises a camera for receiving an external image that changes according to the user's movement; An image processor configured to reduce an image received from the camera to a predetermined size, convert the reduced image into a gray scale, and output the gray scale; A direction change recognizing unit which calculates a direction and a distance by comparing the gray scale image data output from the image processing unit with previously stored image data; And a controller for switching the direction and distance of the character in the game by the data about the direction and distance calculated by the direction change recognizing unit.

3D game direction switching method of a mobile communication terminal having a camera of the present invention for achieving the above object is the highest similarity by receiving and storing the image to the camera, comparing the stored image data and previously stored image data Searching for a location with; Calculating a direction and a distance in which the terminal is moved through the searched position; Characterized in the step of moving the character in the game by the calculated direction and distance.

The retrieving of the location may include reducing the image input to the camera to a predetermined size, converting the image into a gray scale, and storing the gray scale; Measuring similarity by comparing the stored gray scale image data with previously stored gray scale image data; Searching for the position having the highest similarity through the similarity measurement.

The measurement of the similarity may be performed by comparing an image vector of a predetermined area among input image stored gray scale image data with an image vector of previously stored gray scale image data.

Further, when the calculated direction is left or right, the left and right arrow keys perform a function, and if the top or bottom, it performs a function of the up and down arrow keys.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of a 3D game direction switching device and a method of a mobile communication terminal having a camera according to the present invention having the above features will be described with reference to the accompanying drawings.

1 is a block diagram of an embodiment of a 3D game direction switching device of a mobile communication terminal having a camera of the present invention. As shown in the drawing, a camera 10 receiving an externally changed image according to a user's movement, the image received from the camera 10 is reduced to a predetermined size, and the reduced image is converted to gray scale. An image processing unit 20 for outputting the image processing unit 20 and a direction change recognizing unit 30 for calculating a direction and a distance by using the gray scale image data output from the image processing unit 20 and previously stored gray scale image data. And a controller 40 for switching the direction and distance of the character in the game by the data for the direction and distance calculated by the direction change recognizing unit 30.

The camera 10 receives a driving power when a 3D game is executed by a user and outputs an image input from the outside to the image processing unit 20. In this case, the camera 10 is located at the rear of the terminal to input an image. It is desirable to receive.

The reduction of the size of the image image in the image processing unit 20 is because the amount of image data varies according to the number of pixels of the camera 10, and when the amount of image data is large, it is not good in terms of speed or efficiency of processing the data. .

In addition, the reason for converting the color image data input from the camera 10 to gray scale is that the color image data has a vector composed of three colors according to each basic color, and this information is converted to the direction recognizing unit 30 ) Requires three recognitions for each incoming image, so there must be a trade off between performance and processing time. Therefore, in order to convert color image data into one vector, it is converted to gray scale.

The method of recognizing the motion of the image by the direction change recognition unit 30 is performed by comparing the previous image with the current image. The comparison is performed from the current image received after storing the previous image in the previous image vector to perform the comparison. The part of is stored in the current image vector, and the similarity is measured while increasing from [1, 1] to [n, n] of the current image vector and the previous image vector, and it is determined that the image is moved by the position with the highest similarity. The controller 40 outputs a value for the movement, that is, a value for the direction and the distance to the controller 40. In this case, the similarity measurement may use various methods, for example, a similarity measuring method such as Euclidean distance, Hamming Net, Lukasiewicz distance, and the like.

The input current image data is stored as a previous vector when the direction and distance calculation is completed, and then compared with the input image vector.

2 is a flowchart illustrating an embodiment of a 3D game direction change process according to the present invention. As shown, executing a 3D game, receiving an image from the camera 10, reducing the input image to a predetermined size, converting it to a gray scale, and converting the image to a gray scale previously input / converted Measuring the similarity in comparison with the above, searching for a position having the highest similarity through the measurement of the similarity, calculating a direction and distance through which the image is moved, and playing the game by the calculated direction and distance. It consists of moving the character in the genus.

Referring to the operation of the present invention made of these steps are as follows.

First, a user selects and executes a 3D game from game content stored inside the terminal to play a 3D game.

When the game is executed, power is supplied to the camera 10 provided in the terminal to activate the camera 10 and receive an image.

The image processor 20 receives an image captured by the camera 10 by a predetermined time unit, reduces the image to a predetermined size (for example, 1/4 size) in order to reduce the amount of input image data, and then gray scales the image. Convert to In this case, the time unit for receiving the image from the image processor 20 may be determined as a time enough to calculate the direction and distance in the direction change recognition unit 30.

The direction recognizing unit 30 stores a predetermined region (center region of the image) among the image data converted to gray scale as an image vector, and compares the similarity with the image vector of the previously stored gray scale image. For example, if each image vector consists of [1, 1] to [n, n], the similarity is measured starting from [1, 1] and increasing to [n, n]. At this time, the similarity measurement may use a variety of methods, and the detailed description of this method is not provided.

The similarity measurement is used to search for the position with the highest similarity between the current input image vector and the previously input image vector, and calculate the direction and distance of the movement of the image. For example, when the user moves left and right, as shown in FIG. 3A, the direction switch recognizing unit 30 is located at the left or right side of the previously input image vector when the similarity of the compared image vectors is measured. A value corresponding to the left and right directions and a distance value thereof are output to the controller 40.

In addition, when the user moves the terminal up and down as shown in FIG. 3B, the direction change recognizing unit 30 is located at the top or the bottom of the previously input image vector when the similarity is measured through the input image. In the upper and lower direction and the value corresponding to the distance value is output to the controller 40. In this way, when the user rotates the terminal left and right in the 3D game, the character in the game rotates by the corresponding distance in the left or right direction, and moves up and down, the character moves forward or backward. Of course, it should be recognized that the performance of the character according to the left and right rotation and the vertical movement may vary depending on the situation.

When the direction change recognizing unit 30 outputs a predetermined value for the direction and distance through the similarity measuring process as described above, the controller 40 applies a function corresponding to the values to the character in the game to perform a game. .

As described above, the present invention can increase the interest in the game by making the user feel a sense of unity with the character because the character moves in the game by changing the image input to the camera according to the user's movement during the 3D game.

As described in detail above, the present invention compares the image processing data processed by the image processing unit and the image processing unit outputting the image input to the camera during the 3D game and detects the direction to output predetermined data for changing the direction of the character By providing a redirection recognition unit, it is possible to perform the redirection of the character in the game through the user's movement, and increase the user's interest in the game.

1 is a block diagram showing an embodiment of a 3D game direction switching device according to the present invention;

Figure 2 is an embodiment flow chart illustrating a 3D game direction switching method according to the present invention.

Figure 3 is an exemplary view of the left and right direction switch (a) and the vertical direction switch (b) by the user.

** Description of the symbols for the main parts of the drawings **

10: camera 20: image processing unit

30: direction change recognition unit 40: control unit

Claims (8)

A camera receiving an externally changed image according to a user's movement; An image processor configured to reduce an image received from the camera to a predetermined size, convert the reduced image into a gray scale, and output the gray scale; A direction change recognizing unit which calculates a direction and a distance by comparing the gray scale image data output from the image processing unit with previously stored image data; And a control unit which switches the direction and distance of the character in the game by the data about the direction and distance calculated by the direction change recognition unit. The apparatus of claim 1, wherein the camera is located at a rear side of the terminal to receive an image. Receiving and storing an image by a camera and comparing the stored image data with previously stored image data to search for a position having the highest similarity; Calculating a direction and a distance in which the terminal is moved through the searched position; And moving the character in the game by the calculated direction and distance. The method of claim 3, wherein the camera automatically receives power when a game is executed and receives an image. The method of claim 3, wherein the searching of the location comprises: reducing the image input to the camera to a predetermined size, converting the image into a gray scale, and storing the image; Measuring similarity by comparing the stored gray scale image data with previously stored gray scale image data; And searching for a location having the highest similarity through the similarity measurement. The method of claim 5, wherein the similarity measurement is performed using one of Euclidean distance, Hamming Net, and Lukasiewicz distance. The camera of claim 5, wherein the measuring of the similarity is performed by comparing an image vector of a predetermined area among input image stored gray scale image data with an image vector of previously stored gray scale image data. 3D game direction switching method of a mobile communication terminal having a. The method of claim 3, wherein if the calculated direction is left or right, the left and right arrow keys perform a function, and if the upper or lower part performs a function of an up and down arrow key, the 3D game direction change of the mobile communication terminal having a camera. Way.