KR100418440B1 - Method and system for controlling image data of object - Google Patents

Abstract

A method and system for controlling image data of a subject is disclosed. The image data control method of the present invention includes generating image line data based on an image of a subject; Buffering the image line data in a predetermined number of units in reverse order to generate unit storage data; Generating compression unit data; Generating an image file; And storing the compression unit data in reverse order. A system of the present invention for performing the above-described image data control method includes: signal processing means for generating image line data based on an image of a subject; Buffering means for buffering the image line data in a predetermined number of units and generating unit stored data; Compression means for generating compression unit data; And a video terminal including file generation means for generating an image file, and memory means for storing compression unit data in reverse order; And an image confirmation terminal having display means for displaying an image file. Accordingly, according to the image data control method and system of the present invention, since the memory and energy consumption of the image confirmation terminal can be significantly reduced, portable terminals such as portable telephones and personal information terminals having limited memory and energy can be used. have.

Description

Method and system for controlling image data of a subject {METHOD AND SYSTEM FOR CONTROLLING IMAGE DATA OF OBJECT}

The present invention relates to a method and system for controlling image data in order to display an image of a subject captured by a video terminal on a terminal for checking an image, and in particular, to check a normal state of an image of a subject captured in an upside down state. It relates to a method and system for controlling image data.

Recently, a video terminal, that is, a digital camera, may transmit image data of a subject to an image checking terminal such as a personal computer, a portable communication terminal, and a personal digital assistant (PDA). Such a digital camera generates an image file (eg, a Joint Photographic Experts Group (JPEG) file) of a predetermined format by using an image of a captured subject, and stores the generated JPEG file or sends the image to a terminal for checking an image. to provide. Here, the image data of the subject, even if the image of the subject is captured by the digital camera in the upside down state, it should be controlled so that the user can check the image of the subject in a normal state when displaying on the image confirmation terminal.

Next, a description will be given of a method and system for controlling image data in the prior art with reference to FIGS. 1 to 4. Referring to FIG. 1, a conventional image data control system includes a digital camera 10 having a lens 12, an image processor 14, and an interface 16, a memory 22, a command input unit 24, And an image checking terminal 20 having an image control unit 26 and a display 28.

The image processor 14 generates a plurality of image line data based on an image of a subject captured by the lens 12, sequentially buffers the generated image line data, and compresses the image line data to generate a JPEG file. The interface 16 transmits the JPEG file generated by the image processor 14 to the image confirmation terminal 20.

The image controller 26 stores the JPEG file provided through the interface 16 in the memory 22, and when the display command is input to the command input unit 24, the image file 26 reads the JPEG file stored in the memory 22. To display on the display 28.

The image control unit 26 includes a decompression processor 26a, an image inversion processor 26b, and a recompression processor 26c, in order to invert the image of the subject captured in the upside down state. do. In detail, the image controller 26 is provided through the interface 16 in response to an image flipping command (hereinafter, referred to as a "vertical flip command") input to the command input unit 24. After decompressing the JPEG file, the image line data constituting the JPEG file may be arranged in the reverse order and compressed again to generate a new JPEG file. In this case, the new JPEG file generated by the image controller 26 represents an image of a subject captured with the lens 12 upside down as a normal image.

A method of controlling an image of a subject using a system of the related art configured as described above will now be described with reference to FIG. 2.

First, when the image of the subject is captured by the lens 12 (S32), the image processor 14 generates a plurality of image line data based on the captured image of the subject (S34), and generates the plurality of image lines. Data is sequentially buffered (S36). In other words, when the image line data is 0 line data to 7 line data, and the image processing unit 14 includes 0 buffer lines to 7 buffer lines, the image processing unit 14 stores the 0 line data on the 0 buffer line. Save and store 7 line data in 7 buffer lines.

Then, the image processor 14 compresses the buffered image line data to generate a JPEG file (S38). Here, when the image of the subject captured by the lens 12 is upside down, the JPEG file generated by the digital camera 10 represents the image of the subject upside down. For example, when the upper and lower sides of an object formed in the shape of "A" are captured by the lens 12 in an inverted state, the JPEG file generated by the digital camera 10 may have the "A" inverted up and down. The image is shown (see Fig. 3).

In this case, the JPEG file generated by the image processor 14 is provided to the image controller 26 of the image checking terminal through the interface 16 (S40).

Then, the image control unit 26 checks whether the vertical flip command of the JPEG file provided from the digital camera 10 is input through the command input unit 24 (S42).

In the checking step (S42), when it is confirmed that the vertical flip command is input, the image controller 26 drives the decompression processor 26a to decompress the JPEG file (S44) and flip the image. The processor 26b is driven to arrange the image line data of the decompressed JPEG file in reverse order (S46). Then, the image controller 26 drives the recompression processor 26c to recompress the image line data arranged in the reverse order to generate a new JPEG file (S48). In this case, the new JPEG file generated by the image controller 26 represents a normal state in which the subject is upside down. When the JPEG file including the image shown in FIG. 3 is provided to the image controller 26, the image controller 26 generates a new JPEG file including the image shown in FIG.

Subsequently, the image controller 26 stores the new JPEG file in the memory 22 (S50).

On the other hand, if it is confirmed in step S42 that the vertical flip command is not input, the image controller 26 stores the JPEG file provided from the digital camera 10 in the memory 22 (S50). ).

However, according to the image data control method and system of the prior art as described above, the image checking terminal is a decompression processor (26a), so that the image of the subject captured in the upside down state can be displayed in a normal state, Since the image flipping processor 26b and the recompression processor 26c should be provided, the memory and energy consumption of the image checking terminal are very large.

Further, due to the above problems, the system for performing the image data control method of the prior art, as a terminal for checking the image, the use of a portable terminal such as a portable telephone, personal information terminal, etc., having a limited memory and energy There is a limit.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method and system for controlling image data that can effectively solve the above-described problems of the prior art.

In order to more fully understand the drawings used in the detailed description of the invention, a brief description of each drawing is provided.

1 is a block diagram showing the configuration of a video data control system of the prior art.

FIG. 2 is a flowchart illustrating a method for controlling image data of the related art using the system of FIG. 1.

FIG. 3 is a diagram showing a JPEG file generated by the digital camera of FIG. 1 in which an image of the subject " A " is captured upside down.

4 is a diagram showing a new JPEG file generated by the video confirmation terminal of FIG. 1 using the JPEG file of FIG.

5 is a block diagram showing the configuration of a video data control system according to the present invention.

6 is a flowchart illustrating a method of controlling image data of the present invention using the system of FIG.

7A and 7B respectively show images included in the unit storage data generated by the digital camera of FIG. 5 capturing an image of the subject " A ".

8A and 8B respectively show images included in the unit storage data generated by the digital camera of FIG. 5 in which the image of the subject “A” is captured in an upside down state.

FIG. 9 is a diagram illustrating a JPEG file generated by the digital camera of FIG. 5 using the unit storage data shown in FIGS. 8A and 8B.

FIG. 10 is a diagram showing a new JPEG file generated by the video confirmation terminal of FIG. 5 using the JPEG file of FIG.

<Description of the symbols for the main parts of the drawings>

110: lens 120: data generator

130: buffer 140: encoder

150: JPEG buffer 160: Interface

210: memory 220: command input unit

230: image control unit 240: display

250: communication unit

One aspect of the present invention for achieving the above object relates to an image data control method for enabling the user to check the image of the subject captured in the upside down state in a normal state through a predetermined image confirmation terminal. According to an aspect of the present invention, there is provided a method of controlling image data, the method comprising: generating a plurality of series of image line data based on an image of a captured subject; B) generating a plurality of unit stored data by buffering the generated image line data in a predetermined number of units, and generating each unit stored data in reverse order of respective image line data; C) generating compression unit data by compressing the generated unit storage data; Generating an image file of a predetermined format by sequentially combining the generated compression unit data; And E) storing compression unit data constituting the image file in a predetermined memory, and storing the compression unit data in the reverse order of constituting the image file.

Another aspect of the present invention for achieving the above object is a video terminal for providing an image of a subject captured in the upside down state in an image format of a predetermined format, and using the image file provided from the video terminal The present invention relates to an image data control system including a terminal for image confirmation displaying an image of a subject in a normal state. According to another aspect of the present invention, an image data control system includes: signal processing means for serially generating a plurality of image line data based on an image of a captured subject; Buffering means for buffering the generated image line data in a predetermined number of units to generate a plurality of unit stored data, and buffering the image line data in reverse order of the image line data constituting the unit stored data; Compression means for compressing the generated unit storage data to generate compression unit data; File generation means for sequentially combining compression unit data generated by the compression means to generate an image file of a predetermined format; And an interfacing means for providing the generated image file to the terminal for confirming the image, and storing the compression unit data of the image file provided through the interfacing means in reverse order, constituting the image file. Memory means for storing in the reverse order; And a display means for displaying an image file of compression unit data stored in the memory unit in reverse order.

In order to fully understand the present invention, the operational advantages of the present invention, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings which illustrate preferred embodiments of the present invention and the contents described in the accompanying drawings.

Next, a method and system for controlling image data according to the present invention will be described in detail with reference to FIGS. 5 to 10.

5 is a block diagram showing the configuration of a video data control system according to the present invention. Referring to FIG. 5, an image data control system according to the present invention includes a lens 110, a data generator 120, a buffer 130, an encoder 140, a JPEG buffer 150, and an interface 160. The digital camera 100 includes a memory 210, a command input unit 220, an image controller 230, a display 240, and a communication unit 250.

In the present embodiment, the digital camera 100 is an image terminal operated by receiving a control command input to the command input unit 220 of the image checking terminal 200 through the interface 160. For example, when an image flip command, ie, a vertical flip command, is input to the command input unit 220, the digital camera 100 operates in response to the input vertical flip command. In addition, in another embodiment of the present invention, the digital camera 100 may include its own command input unit (not shown), and may be implemented to operate in response to a control command input through the own command input unit.

The lens 110 captures an image of a subject and provides the image to the data generator 120. In this case, even if the image of the subject is captured in the upside down state, the lens 110 provides the data generation unit 120 with the image of the subject captured in the upside down state.

The data generator 120 sequentially generates a plurality of image line data based on an image of a subject provided from the lens 110, and sequentially outputs the plurality of image line data.

The buffer 130 buffers a plurality of image line data output from the data generator 120 in a predetermined number of units to generate a plurality of unit stored data. In this case, when the vertical flip command is input through the command input unit 220, the buffer 130 buffers a predetermined number of image line data constituting each unit stored data in reverse order. That is, each unit storage data is generated in the reverse order of the respective image line data.

The encoder 140 compresses each unit storage data generated in the buffer 130 to generate compression unit data, and an identifier indicating that the last part of the compression unit data is the last part of each compression unit data (hereinafter, “ Insert a "restart marker".

The JPEG buffer 150 combines a plurality of compression unit data generated by the encoder 140 and inserts a header to generate a JPEG file.

The interface 160 provides the JPEG file generated by the JPEG buffer 150 to the image checking terminal 200. In addition, the interface 160 receives a control command related to the digital camera 100 input to the command input unit 220 of the image checking terminal.

The image controller 230 stores the JPEG file provided from the digital camera 100 in the memory 210. On the other hand, when the vertical flip command is input, the image controller 230 converts each compression unit data constituting the JPEG file provided from the digital camera 100 in response to the input vertical flip command. The memory 210 is stored in the reverse order of the configuration.

In addition, when a display command is input through the command input unit 220, the image controller 230 reads a JPEG file stored in the memory 210 and displays the JPEG file on the display 240. Here, as the display 240, a monitor of a computer, a liquid crystal display of a portable terminal, or the like may be used according to the image checking terminal 200.

In addition, when an image transmission command is input through the command input unit 220, the image control unit 230 transmits a JPEG file stored in the memory 210 to another external terminal through the communication unit 250.

In the image data control method using the system of the present invention configured as described above, referring to FIG. 6, first, the lens 110 captures an image of a subject (S610) and provides the data to the data generator 120.

Then, the data generator 120 sequentially generates and outputs a plurality of image line data based on the image of the subject captured by the lens 110 (S620).

In this case, the digital camera 100 checks whether a vertical flip command is input through the interface 160 (S630).

In the checking step (S630), when it is determined that the vertical flip command is not input to the digital camera 100, the buffer 130 stores a plurality of image line data output from the data generator 120 by a predetermined number. By sequentially buffering (S632), a plurality of unit stored data is generated (S650). Specifically, when the data generation unit 120 generates image line data of 0 to 15 lines, and the buffer 130 includes 0 buffer lines to 7 buffer lines, the buffer 130 The 0 line data is stored in the 0 buffer line, and the 7 line data is stored in the 7 buffer line to generate one unit stored data. The buffer 130 stores 8 line data in 0 buffer line and 15 line data in 7 buffer line to generate another unit storage data. The unit storage data generated as described above includes images as illustrated in FIGS. 7A and 7B when the image of the subject captured by the lens 110 is “A”.

On the other hand, if it is determined in step S630 that the vertical flip command is input, the buffer 130 buffers a plurality of image line data output from the data generator 120 in a reverse order of a predetermined number. In operation S640, a plurality of unit stored data is generated (S650). In detail, when the data generator 120 outputs image line data of 0 to 15 lines, and the buffer 130 includes 0 buffer lines to 7 buffer lines, the buffer 130 The 0 line data is stored in the 7 buffer line, and the 7 line data is stored in the 0 buffer line to generate one unit stored data. The buffer 130 stores 8 line data in 7 buffer lines and 15 line data in 0 buffer lines to generate another unit storage data. The unit storage data generated as described above may include images as illustrated in FIGS. 8A and 8B when the image captured by the lens 110 is inverted up and down of “A”.

Then, the encoder 140 generates a plurality of compression unit data by inserting and restarting the restart marker into each unit storage data generated in the buffer 130 (S660).

Subsequently, the JPEG buffer 150 combines a plurality of compression unit data generated by the encoder 140 and inserts a header to generate a JPEG file (S670). Here, if each of the plurality of unit storage data generated by the buffer 130 includes an image as shown in FIGS. 8A and 8B, the JPEG file generated by the JPEG buffer 150 is illustrated in FIG. 9. As formed.

As described above, the JPEG file generated by the digital camera 100 is provided to the image checking terminal 200 through the interface 160 (S680).

In this case, the image controller 230 checks whether the vertical flip command is input to the image checking terminal 200 through the command input unit 220 (S690).

If it is determined in step S690 that the vertical flip command is not input, the image controller 230 stores the JPEG file provided from the digital camera 100 in the memory 210 as it is (S692).

On the other hand, if it is determined in step S690 that the vertical flip command is input, the image controller 230 stores the data of each compression unit except the header of the JPEG file provided from the digital camera 100 in reverse order. Store at 210 (S700). In this case, the JPEG file including the image as shown in FIG. 9 is changed to a new JPEG file including the image as shown in FIG.

As described above, the JPEG file stored in the memory 210 may be displayed on the display 240 or transmitted to another external terminal through the communication unit 250 according to a user's command input to the command input unit 22. have.

According to the image data control method and system of the present invention, even if the image of the subject is captured in the upside down state, the image checking terminal 200 is stored in the memory 210 by changing only the order of the compression unit data, The image of the subject may be checked in the normal state through the display 240.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible.

For example, in the above-described embodiment, the image checking terminal 200 transmits only the JPEG file stored in the memory 210 to the external terminal through the communication unit 250, but in another embodiment of the present invention. The image checking terminal 200 may store a JPEG file received from another external terminal through the communication unit 250 in the memory 210 and display it on the display 240.

In addition, in the above-described embodiment, for convenience of description, the digital camera 100, that is, the buffer 130 of the video terminal includes eight buffer lines, and the data generator 120 based on the image of the subject. Although it has been described as generating 16 image line data, it is not limited thereto. In another embodiment of the present invention, the buffer 130 of the video terminal may have more than eight buffer lines or fewer than eight buffer lines. The data generator 120 may generate tens to hundreds of image line data based on the image of the subject.

Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

According to the image data control method and system of the present invention as described above, through the simple operation of storing the compression unit data generated in the video terminal in the memory of the image confirmation terminal in the reverse order of the subject captured upside down Since the image can be checked in a normal state, the memory and energy consumption of the image checking terminal can be significantly reduced.

In addition, the above-described reason, the system for performing the image data control method of the present invention, as a terminal for image confirmation, not only a personal computer, but also a portable terminal such as a portable telephone, a personal information terminal, etc. having a relatively limited memory and energy. Can be used.

Claims (5)

An image data control method for allowing an image of a subject captured in an upside down state to be checked in a normal state through a predetermined image checking terminal, A) generating a plurality of serial image line data based on the captured image of the subject; B) generating a plurality of unit stored data by buffering the generated image line data in a predetermined number of units, and generating each unit stored data in reverse order of respective image line data; C) generating compression unit data by compressing the generated unit storage data; Generating an image file of a predetermined format by sequentially combining the generated compression unit data; And E) storing compression unit data constituting the image file in a predetermined memory, and storing the image data in the reverse order of constituting the image file. Image data control method of the subject comprising a. The method of claim 1, wherein step C) And after the compression of the respective unit storage data is completed, inserting a predetermined identifier indicating the last part of the compression unit data into each of the compression unit data. A video terminal for providing an image of a subject captured in an upside down state as an image file of a predetermined format; and an image checking terminal for displaying an image of the subject in a normal state by using an image file provided from the video terminal. In the video data control system provided, The video terminal, Signal processing means for generating a plurality of serial image line data based on the captured image of the subject; Buffering means for buffering the generated image line data in a predetermined number of units to generate a plurality of unit stored data, and buffering the image line data in reverse order of the image line data constituting the unit stored data; Compression means for compressing the generated unit storage data to generate compression unit data; File generation means for sequentially combining compression unit data generated by the compression means to generate an image file of a predetermined format; And And an interfacing means for providing the generated image file to the image confirmation terminal. The video confirmation terminal, Memory means for storing compression unit data of an image file provided through the interfacing means in a reverse order, and storing the compression unit data in a reverse order of configuring the image file; And Display means for displaying an image file of compression unit data stored in reverse order in said memory means Image data control system of the subject, characterized in that it comprises a. The terminal of claim 3, wherein the image checking terminal And communication means for transmitting the image file stored in the memory means to another external terminal. The terminal of claim 3 or 4, wherein the image checking terminal An image data control system for a subject, which is a portable telephone or a personal information terminal.