KR20150025146A - Apparatus and Method for Preventing Image Capture And Recording Medium Recording the Program Thereof - Google Patents

Apparatus and Method for Preventing Image Capture And Recording Medium Recording the Program Thereof Download PDF

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KR20150025146A
KR20150025146A KR20130102404A KR20130102404A KR20150025146A KR 20150025146 A KR20150025146 A KR 20150025146A KR 20130102404 A KR20130102404 A KR 20130102404A KR 20130102404 A KR20130102404 A KR 20130102404A KR 20150025146 A KR20150025146 A KR 20150025146A
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frame
original image
zone
pixel
generating
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유재욱
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유재욱
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/60—Protecting data

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Abstract

The present invention relates to an apparatus and method for preventing capture of an original image, which are capable of preventing capture of an original image by allowing an image different from the original image to be captured when a user captures a received image, and to a recording medium recording a program for the apparatus and method. According to an embodiment of the present invention, an apparatus for preventing capture of an original image includes a generating unit, and a providing unit. The generating unit generates two or more frames different from a frame corresponding to an original image by using the original image which is made up of a single frame, wherein the generating unit generates the frames such that the average of specific pixel values in the generated different frames is equal to the specific pixel value or is within a predetermined error range, in the frame corresponding to the original image. The providing unit virtually provides a user with the original image by transmitting the generated frames sequentially and repeatedly.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and method for capturing an original image,

The present invention relates to an original image capture prevention apparatus and method, and a recording medium on which the program is recorded. More particularly, the present invention relates to an original image capture prevention apparatus and method for preventing an original image from being captured by capturing an image different from an original image by capturing an image provided by a user, and a recording medium on which the program is recorded.

Due to the development of computers, smart phones, and the Internet, information such as images, photographs, and documents can be quickly and easily accessed, and downloading or capturing of such information makes it easy to pirate.

In particular, sharing of pictures and images is increasing due to the development of various types of communication such as social networking service (SNS). However, there is a need for a technique for image transmission that expresses an image that is visually completed by personal intention or necessity, but does not capture an image. These technologies are needed not only for individuals but also for various fields such as corporations and national organizations.

SUMMARY OF THE INVENTION An object of the present invention is to provide an apparatus and method for preventing an original image from being captured while providing an image visually identical to an original image.

Another object of the present invention is to provide an apparatus and method for preventing an original image capture that can prevent the same image capture as a source image in a method such as screen capturing or ROI (Region Of Interest) copying will be.

According to another aspect of the present invention, there is provided a method of generating a plurality of frames different from a frame corresponding to an original image using a frame corresponding to an original image, repeatedly transmitting a plurality of generated frames, The present invention provides an apparatus and method for preventing an original image from being captured by capturing one of frames different from a frame corresponding to an original image when an image is captured.

According to another aspect of the present invention, there is provided an original image capture prevention apparatus and method capable of preventing a capture of an original image by generating a plurality of different frames by adjusting pixel values of a frame corresponding to an original image .

The technical objects of the present invention are not limited to the above-mentioned technical problems, and other technical subjects not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided an apparatus for preventing an original image from capturing an original image, the apparatus comprising: And generating the at least two frames so that the average of the specific pixel values in the generated at least two frames is equal to or within a predetermined error range in the frame corresponding to the original image, Generating unit; And a providing unit that provides the original image visually to the user by sequentially and repeatedly transmitting the generated at least two frames.

According to one embodiment, when the frame generated by the generation unit is a first frame and a second frame, the generator generates the RGB value corresponding to the specific pixel in the first frame and the RGB value corresponding to the specific pixel in the second frame, Wherein the first frame and the second frame are generated such that the RGB values corresponding to the pixels are different from each other, wherein the RGB value corresponding to the specific pixel in the first frame and the RGB value corresponding to the specific pixel in the second frame May generate the first frame and the second frame such that the average value of the first and second frames is equal to the RGB value of the specific pixel of the original image.

According to an exemplary embodiment, the generator may calculate the RGB value of a specific pixel in the first frame and the RGB value of the specific pixel in the first frame, considering the brightness characteristic of the display device that visually provides the at least two frames transmitted by the providing unit. And generate RGB values of the specific pixel in the frame.

When the generating unit generates a plurality of images different from a frame corresponding to the original image, if the information about the addition or subtraction from the RGB values of the frame corresponding to the original image is a, May be first processed so that the color expression range is included in a range from a to 255-a, and then the at least two frames may be generated using the primary processed frame.

If there is a third frame in the frame generated by the generation unit,

Wherein the generator generates the RGB value corresponding to the specific pixel in the first frame different from at least one of the RGB value corresponding to the specific pixel in the first frame and the RGB value corresponding to the specific pixel in the second frame, In the first frame, the RGB value corresponding to the specific pixel in the first frame, the RGB value corresponding to the specific pixel in the second frame, and the RGB value corresponding to the specific pixel in the second frame, May generate the first frame and the second frame such that the average of the RGB values corresponding to the specific image is equal to the RGB value corresponding to the specific pixel in the frame corresponding to the original image.

The generating unit divides the frame corresponding to the original image into a predetermined region, generates a first frame by adjusting a pixel value of the specific region, adjusts pixel values of another specific region to generate a second frame, The second frame, and the third frame are equal to a pixel value of a frame corresponding to the original image, the pixel values of the first frame, the second frame, The first frame, the second frame, and the third frame.

The original image capture prevention device may further include a first frame and a second frame, which are frames used by the generator to generate the at least two frames using the frame corresponding to the original image, Wherein the base frame unit is configured such that an average value of pixel values of the first base frame and the second base frame is equal to a pixel value of a frame corresponding to the original image, Wherein the generating unit generates the first base frame and the second base frame so that the pixel values of the base frame are different from each other, and the generating unit generates the first base frame and the second base frame using the frame corresponding to the original image, Another two or more frames can be generated.

According to an embodiment, when the first frame, the second frame and the third frame, which are two or more different frames, are generated, the first frame, the second frame and the third frame may be identical A pixel value of a specific one of the plurality of areas is divided into a frame corresponding to the original image, a frame corresponding to the same area as the specific area in the frame of either the first basic frame or the second basic frame, The average of pixel values corresponding to the same coordinates of the first frame, the second frame, and the third frame is determined by matching the values of pixels corresponding to the same coordinates of the frame corresponding to the original image The pixel value of the specific region that matches the pixel value may be determined to be equal to the corresponding pixel value.

Wherein the generating unit matches a pixel value corresponding to a first region of a frame corresponding to the original image in a first region of the divided regions of the first frame and a second region of the region adjacent to the first region, A pixel value corresponding to the same zone as the second zone of the first base frame is matched and a third zone of the zone adjacent to the first zone corresponds to the same zone as the third zone of the second base frame Matching the pixel values to produce a first frame; matching the pixel values in the first zone of the second frame with the pixel values in the same zone as the first zone of the first base frame; The second zone of the second base frame matches a pixel value corresponding to the same zone as the second zone of the second base frame and a third zone of the zone adjacent to the first zone, And a second frame is generated by matching pixel values corresponding to the same zone as the third zone among the frames corresponding to the image, and in the first zone of the third frame, Matching a corresponding pixel value, and wherein a second one of the zones adjacent to the first zone matches a pixel value corresponding to the same zone as the second one of the second base frames, The third zone may generate a first frame by matching pixel values corresponding to the same zone as the third zone of the first base frame.

Wherein the base frame unit generates the first base frame by applying a blur filter to a frame corresponding to the original image and generates the first base frame by multiplying the first base frame by two times the pixel value of the frame corresponding to the original image, The pixel value of the second basic frame may be set to the pixel value of the second basic frame to generate the second basic frame.

According to another aspect of the present invention, there is provided an apparatus for preventing image capture of an original image, the apparatus comprising: And generating the at least two frames so that the average of the specific pixel values in the generated at least two frames is equal to or within a predetermined error range in the frame corresponding to the original image, Generating step; And a providing step of providing the original image visually to the user by sequentially and repeatedly transmitting the generated at least two frames.

Wherein when the frame generated by the generating step is a first frame and a second frame, the generating step generates the RGB value corresponding to the specific pixel in the first frame and the RGB value corresponding to the specific pixel in the second frame, Wherein the average value of the RGB values corresponding to the specific pixel in the first frame and the RGB values corresponding to the specific pixel in the second frame are greater than the average value of the RGB values in the second frame, The first frame and the second frame may be generated so as to be equal to the RGB value corresponding to the specific pixel of the original image.

Wherein the generation step includes a step of generating the RGB value of the specific pixel in the first frame and the RGB value of the specific pixel in the second frame by considering the brightness characteristic of the display method that visually provides the at least two frames transmitted by the providing step, Can be generated.

According to an embodiment, when there is a third frame in the frame generated by the generation step, the generation step may include: a step in which, in the first frame, Generating the third frame such that the third frame is different from at least one of an RGB value corresponding to a pixel and an RGB value corresponding to the specific pixel in the second frame, An RGB value corresponding to the specific pixel in the second frame, and an RGB value corresponding to the specific pixel in the third frame are RGB values corresponding to the specific pixel in the frame corresponding to the original image, The first frame and the second frame may be generated to be the same.

Wherein the generating step comprises the steps of: dividing a frame corresponding to the original image into a predetermined region, generating a first frame by adjusting pixel values of the specific region, adjusting a pixel value of another specific region to generate a second frame, The pixel values of the first frame, the second frame, and the third frame are adjusted so that the average of the pixel values of the first frame, the second frame, and the third frame is equal to the pixel value of the frame corresponding to the original image. And generate the first frame, the second frame, and the third frame.

The original image capture prevention method may further include a basic frame step of generating a first basic frame and a second basic frame, which are frames used for generating the at least two frames by using the frame corresponding to the original image Wherein an average value of pixel values of the first base frame and a second base frame is equal to a pixel value of a frame corresponding to the original image, The first base frame and the second base frame are generated such that pixel values of the second base frame are different from each other, and the generation step generates the frame corresponding to the original image, the first base frame, So that two or more different frames can be generated.

Wherein the generation step includes the steps of: when the first frame, the second frame and the third frame, which are two or more different frames, are generated, the first frame, the second frame and the third frame, And a pixel value of a specific region among the plurality of regions is divided into a frame corresponding to the original image, a pixel corresponding to the same region as the specific region in the frame of either the first base frame or the second base frame Wherein an average of pixel values corresponding to the same coordinates of the first frame, the second frame, and the third frame is determined by matching a pixel value corresponding to the same coordinates of a frame corresponding to the original image, The pixel value of the specific region that matches the value of the pixel may be determined.

According to one embodiment, the generating step may include matching a pixel value corresponding to a first region of a frame corresponding to the original image in a first region of the divided regions of the first frame, Wherein a second zone of adjacent zones matches a pixel value corresponding to the same zone as the second zone of the first base frame, and a third zone of the zone adjacent to the first zone matches the third zone of the third base frame, Matching a pixel value corresponding to the same zone as the first zone of the first frame with the first zone of the second frame, Wherein a second one of the zones adjacent to the first zone matches a pixel value corresponding to the same zone as the second one of the second base frames, And the third zone generates a second frame by matching pixel values corresponding to the same zone as the third zone among the frames corresponding to the original image, Matching a pixel value corresponding to the same zone as the first zone and a second zone of the zone adjacent to the first zone matching a pixel value corresponding to the same zone as the second zone of the second base frame, The third zone of the zone adjacent to the first zone may generate a first frame by matching pixel values corresponding to the same zone as the third zone of the first base frame.

Wherein the base frame step comprises: generating a first base frame by applying a blur filter to a frame corresponding to the original image; and generating a second base frame by multiplying each pixel value of the frame corresponding to the original image by the first base The second base frame can be generated by setting a pixel value obtained by subtracting each pixel value of the frame as the pixel value of the second base frame.

According to an aspect of the present invention, there is provided a computer-readable recording medium having recorded thereon a program for causing a computer to execute the steps of: Wherein the average of the specific pixel values in the generated at least two or more different frames is equal to or less than a predetermined error value in the frame corresponding to the original image, A generation step of generating a frame so as to exist within the range; And a process of providing the original image visually to the user by sequentially and repeatedly transmitting the generated at least two frames.

The present invention can prevent the user from capturing an original image while providing the user with an image visually the same as the original image.

Therefore, the present invention can be used for images to be reported on copyright, images to be prevented from illegal copying, archives, and the like, thereby preventing illegal copying.

In addition, the present invention can share an image with a counterpart in a variety of services such as a social network service, a chat, a meeting, and an online contact arrangement service, but can not capture or store the image.

In addition, the present invention can be utilized in a character recognition service for preventing automatic subscription on-line, thereby providing a series of fragmented and distorted streaming images.

1 is a block diagram of an original image capture prevention apparatus according to an embodiment of the present invention.
2 is a diagram showing an example of RGB values at a specific pixel of a frame corresponding to an original image.
3 is a diagram illustrating an example of RGB values in a specific pixel of frames generated by a generation unit of an original image capture prevention apparatus according to an exemplary embodiment of the present invention.
4 is a diagram showing another example of the first frame, the second frame and the third frame generated by the generation unit.
5 is a configuration diagram of an original image capture prevention apparatus according to an embodiment of the present invention.
6 is a flowchart illustrating an original image capture prevention method according to an exemplary embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. Also, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.

In this specification, a singular form may include plural forms unless specifically stated in the phrase. It is noted that the terms "comprises" and / or "comprising" used in the specification are intended to be inclusive in a manner similar to the components, steps, operations, and / Or additions.

The original image capture prevention apparatus according to the present invention generates a plurality of different frames different from one frame corresponding to an original image by using an original image composed of one frame. In addition, the original image capture prevention apparatus according to the present invention rapidly repetitively transmits a plurality of different frames generated so that an image recognized by a user through a display device can be recognized as an original image, When capturing an image to be displayed, captures one of a plurality of different frames to capture an image different from the original image.

More specifically, an original image capture prevention apparatus according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4. FIG.

1 is a block diagram of an original image capture prevention apparatus according to an embodiment of the present invention.

1, an apparatus 100 for preventing image capture of an original image according to an exemplary embodiment of the present invention includes a generating unit 120 and a providing unit 130, and may further include a base frame unit 110 .

The generating unit 120 generates at least two or more different frames different from the frame corresponding to the original image using the frame corresponding to the original image.

The original image may mean an image composed of one frame.

The generating unit 120 generates at least two or more different frames so that the average of pixel values such as RGB values at each coordinate of the generated frame is the same as the pixel value at each coordinate of the frame corresponding to the original image .

The number of frames generated by the generation unit 120 may be several to several tens.

The number of frames generated by the generation unit 120 may differ according to the setting and the number of frames generated by the generation unit 120 based on the rate at which the providing unit 130 repeatedly transmits the frame generated by the generating unit 120 ) Can be set.

Specifically, the original image capture prevention apparatus 100 according to an embodiment of the present invention will be described assuming that the number of frames generated by the generation unit 120 is three.

However, the original image capture prevention apparatus 100 according to an embodiment of the present invention is not limited to the case where the number of frames generated by the generation unit 120 is three, It is natural that it can be applied to both cases where at least two or more frames different from the original image are generated.

The three frames generated by the generation unit 120 are referred to as a first frame, a second frame, and a third frame.

The generation unit 120 generates an RGB value corresponding to a specific pixel (xy) in the second frame and an RGB value corresponding to a specific pixel (xy) in the second frame and an RGB value corresponding to a specific pixel It is possible to generate the first frame, the second frame and the third frame so that they are all different.

However, the generating unit 120 may generate the first frame, the second frame, and the second frame so that the RGB values of the first frame, the second frame, and the third frame are different from each other at all pixels (x, y) It is not necessary to generate the third frame.

For example, the generating unit 120 generates a frame such that only the RGB values of a specific pixel corresponding to an even-numbered x coordinate and an odd-numbered y coordinate are different from each other, and the RGB values May be identical to each other.

For example, the generating unit 120 may generate a frame such that only the RGB values of a specific pixel corresponding to the x-coordinate is a multiple of 3 and the y-coordinate is a division of 5. [

However, if the average of the RGB values of the pixels corresponding to the same coordinates in the first frame, the second frame, and the third frame generated by the generating unit 120 is less than the RGB of the pixel corresponding to the same coordinates of the frame corresponding to the original image The first frame, the second frame, and the third frame.

2 is a diagram showing an example of RGB values at a specific pixel of a frame corresponding to an original image.

3 is a diagram illustrating an example of RGB values in a specific pixel of frames generated by a generation unit of an original image capture prevention apparatus according to an exemplary embodiment of the present invention.

An example of the first frame, the second frame and the third frame generated by the generation unit 120 will be described with reference to FIGS. 2 and 3. FIG.

Referring to FIG. 2, the RGB values of the specific pixel (x1, y1) of the frame 21 corresponding to the original image are (250, 120, 120).

The generating unit 120 may generate a first RGB frame, a second RGB frame, and a third RGB frame by generating a new RGB value using a predetermined condition on the RGB values of the pixels in the frame 21 corresponding to the original image .

The predetermined condition may be set in various ways, but the average of the RGB values of the first frame, the second frame, and the third frame in the same specific pixel is the same as the pixel value of the pixel of the frame 21 corresponding to the original image in the specific pixel It can be set to be equal to the RGB value.

For example, the generating unit 120 may generate a first frame by adding 120 and 120 respectively to the G and B values of the RGB RGB values of the frame 21 corresponding to the original image. In addition, the second frame can be generated by subtracting 120 from the B value of the pixel RGB values of the frame 21 corresponding to the original image. In addition, the third frame can be generated by subtracting 120 from the G value of the pixel RGB values of the frame 21 corresponding to the original image.

Referring to FIG. 3, the RGB values of the pixels corresponding to the (x1, y1) coordinates of the first frame, the second frame, and the third frame generated by the generator 120 are 250, 240, 240, 250, 0) and (250, 0, 120). That is, the average of the RGB values in the pixels corresponding to the (x1, y1) coordinates of the first frame, the second frame, and the third frame is (250,120,120) The RGB value of the pixel corresponding to the coordinate can be seen.

The generation unit 120 generates the first frame, the second frame, and the third frame by changing the RGB values of the pixels corresponding to all the coordinates of the frame 21 corresponding to the original image, as shown in FIGS. 2 and 3 can do.

Referring back to FIG. 1, the providing unit 130 sequentially and repeatedly transmits the frames generated by the generating unit 120 to visually display the frames on the display unit of the user.

The providing unit 130 may provide the user with a frame generated by the generating unit 120 in a streaming manner to visually recognize the same image as the original image.

When the providing unit 130 sequentially and repeatedly transmits and displays the frames generated by the generating unit 120, all of the transmitted frames are different from the frame 21 corresponding to the original image, (For example, 60 frames per second are transmitted) enough to be perceived as one frame by a person's viewpoint, the person is visually recognized as being the same as the original image do.

That is, referring to FIG. 3, if the first frame 130, the second frame, and the third frame are sequentially and repeatedly transmitted in 60 frames per second and displayed on the display device, The RGB values of the pixels corresponding to the (x1, y1) coordinates of the frame and the third frame can visually recognize colors corresponding to (250, 240, 240).

2 and 3, when a frame is generated by changing the RGB values of the frame 21 corresponding to the original image, the R, G, and B values of the RGB values are generated, There is a problem that the range of the color representation can be reduced due to the predetermined condition for changing the value of B or the like.

That is, for example, when each channel of RGB is 8 bits and the generating unit 120 generates a plurality of frames by changing a part or all of the RGB values of each pixel by ± a, The maximum brightness value and the minimum brightness value that can be represented by an average can be limited to a from 255 to a. The generation unit 120 generates a frame different from the original frame in order to prevent the original image from being captured.

Therefore, when a black color having an RGB value of (0, 0, 0) and a representation of a color close to white having an RGB value of (255, 255, 255) are large, the generation unit 120 according to the method described with reference to FIGS. Frame generation can reduce the range of color representation.

In order to solve this problem, the generating unit 120 first processes the frame 21 corresponding to the original image so that the color expression range is included in a range from a to 255-a, It is possible to generate a plurality of frames using the method described with reference to FIG. 2 and FIG. a is information about a value to be added or subtracted from the RGB value of the frame 21 corresponding to the original image in order to generate a plurality of images different from the frame 21 corresponding to the original image.

The primary processing of such a frame can be performed in the base frame section 110.

When the generating unit 120 generates a plurality of modified frames using the primary processed frame and the providing unit 130 sequentially and repeatedly provides the plurality of modified frames generated by the generating unit 120 , The user can recognize the original image indicated by the visually primed frame through the display device.

The original image capture prevention apparatus according to the present invention does not necessarily perform the primary processing, and can determine whether the primary processing is performed according to the setting or the characteristics of the image.

For example, when the color characteristic of the image is strongly displayed in black or white, the generation unit 120 can not generate a modified frame by subtracting the RGB value from the black (RGB) value of (0,0,0) The generation unit 120 can not generate the modified frame by adding the RGB values. Accordingly, the base frame unit 110 processes the RGB values of the frame 21 corresponding to the original image, and if a is 27, the color range of the original image is in the range of 0 + 27 to 255-27, 228 < / RTI >

When the generating unit 120 generates a plurality of frames using the primary processed frame and the providing unit 130 provides the frame generated by the generating unit 120, Recognition through the provided frames may be somewhat less bright than the original image, but it may be possible to visually acquire an image that does not cause blurring or the like, while preserving the original image's modification. That is, primary processing of the frame of the original image by the basic frame unit 110 can be applied when black or white is important or occupies a large part in image characteristics, and it is not necessarily applied to all original images.

2 and 3, when generating a frame by changing the RGB values of the frame 21 corresponding to the original image, the generating unit 120 transmits the frame generated by the providing unit 130 A frame may be generated in consideration of the brightness characteristic function of the displayed display device.

Specifically, the brightness (illuminance) for each display device may not always match the RGB value. That is, for example, the brightness difference between the RGB values (50, 50, 50) and the RGB values (100, 100, 100) may not be two times different depending on the characteristics of the display device. Accordingly, the generating unit 120 generates RGB values according to the RGB values of the display device in which the image is displayed by the providing unit 130 such that the average of the RGB values of the pixels of the generated frames is equal to the brightness value of the original image The brightness characteristic function f (x) can be considered. For example, the brightness characteristic function f (x) may be a characteristic function related to the RED channel among RGB.

More specifically, when the RGB value of the specific pixel of the frame 21 corresponding to the original image is p, the specific pixel of the frame 21 corresponding to the original image is represented by the brightness characteristic function f (x) The actual brightness value P may be f (p). The generation unit 120 generates a first frame, a second frame, and a third frame so that the average of RGB values corresponding to the specific pixel in each of the first frame, the second frame, and the third frame is f (p) Can be generated.

4 is a diagram showing another example of the first frame, the second frame and the third frame generated by the generation unit.

Another example in which the generating unit 120 generates the first frame 31, the second frame 32, and the third frame 33 will be described with reference to FIG.

It can be seen that the frame generated by the generator 120 shown in FIG. 4 is a frame generated by disposing O, T1, and T2 under a predetermined arrangement condition.

 T1 and T2 may be generated by the base frame unit 110. [

That is, the basic frame unit 110 generates a basic frame used by the generation unit 120 to generate the at least two frames using the frame corresponding to the original image. 0 is a frame corresponding to the original image, and T1 is a first base frame generated by the base frame unit 110. [ T2 is a second base frame generated by the base frame unit 110. [

Specifically, the base frame unit 110 generates the first base frame and the second base frame as an example. The basic frame unit 110 determines that the average value of pixel values of the first base frame and the second base frame is equal to the pixel value of the frame corresponding to the original image, The first base frame and the second base frame may be generated so that the pixel values are different from each other. Therefore, the basic frame unit 110 can generate at least two basic frames.

As a method of generating the base frame by the base frame unit 110, a method of generating a plurality of frames using the frame corresponding to the original image, as described above, may be used.

In addition, the basic frame unit 110 generates a first base frame by applying a blur filter to a frame corresponding to the original image, and generates a first base frame by multiplying each pixel value of the frame corresponding to the original image by a first base A second base frame may be generated by setting a pixel value obtained by subtracting each pixel value of a frame as a pixel value of the second base frame.

The generating unit 120 can generate the first frame 31, the second frame 32, and the third frame 33 using the frame corresponding to the original image, the first base frame, and the second base frame .

The generating unit 120 may divide the first frame 31, the second frame 32, and the third frame 33 into predetermined regions under the same reference. It is possible to divide the area into the same standard checkerboard shape and divide the area so as to include the same number of pixels in one size. Another example under the same criterion may be to divide the area into a repeating pattern of rhombus or various puzzle shapes rather than a checkerboard pattern.

Another example under the same criterion is that if the image is about the face of a person, the face may be recognized and then the area may be divided by the components of the face. That is, the base frame unit 110 can divide the area into the eyebrow area, the nose area, the mouth area, the jaw contour area, the hair area, and the like of the face.

Further, the same reference area may be interpreted for each pixel.

The generating unit 120 determines a pixel value existing in the region divided under the same reference using the frame corresponding to the original image, the first base frame, and the second base frame, and generates a first frame 31, a second frame 32 and the third frame 33, respectively.

That is, the generating unit 120 sequentially arranges the frames corresponding to the original image, the first base frame, and the second base frame in each of the divided regions in order, thereby generating the first frame 31, the second frame 32, The frame 33 can be generated.

The average of the pixel values in the specific coordinates of the first frame 31, the second frame 32 and the third frame 33 generated by the generating unit 120 is the average of the pixel values in the specific coordinates of the frame corresponding to the original image And is similar to or within a predetermined range of pixel values. The predetermined range may be set in consideration of the brightness characteristic function of the display device or may be set to 1 to 5 due to the decimal point of the RGB value in the average calculation process, and such setting may be changed.

Specifically, the generating unit 120 matches a pixel value corresponding to a specific region of the frame corresponding to the original image to a specific region of the first frame 31, Matching a pixel value corresponding to the same area as a certain area of the area adjacent to the specific area among the basic frames and the other area of the area adjacent to the specific area, It is possible to generate the first frame 31 by matching pixel values corresponding to the same region.

In addition, the generating unit 120 matches a pixel value corresponding to a specific region of the first base frame to a specific region of the second frame 32 having a predetermined region divided under the same reference, Of the first base frame match pixel values corresponding to the same zone as some of the zones adjacent to the particular zone, and some of the zones adjacent to the particular zone match the pixel values of the zone It is possible to generate the second frame 32 by matching pixel values corresponding to the same zone as some other zones.

In addition, the generating unit 120 matches a pixel value corresponding to a specific region of the second base frame to a specific region of the third frame 33 having a predetermined region divided under the same reference, Of the first base frame match pixel values corresponding to the same area as some of the zones adjacent to the specific zone, and another zone of the zone adjacent to the specific zone matches the pixel value of the first base frame It is possible to generate the third frame 33 by matching pixel values corresponding to the same zone as another zone of the zone adjacent to the specific zone.

More specifically, referring to FIG. 4, for example, the sizes of the first frame 31, the second frame 32, and the third frame 33 may be the same. In Fig. 4, the generating unit 120 divides the first frame 31, the second frame 32 and the third frame 33 into 16 equal-sized zones under the same criterion.

The generation unit 120 generates a value of a pixel corresponding to the index (1, 4) of the first frame 31 divided into 16 equal-sized regions as a value corresponding to an index (1,4) It is possible to match (match the values of the same coordinates) with the values of the pixels. The generating unit 120 may also calculate a pixel value corresponding to the index (2,4) of the first frame 31 to a pixel value corresponding to the coordinates belonging to the index (2,4) have. The generating unit 120 may match the pixel values corresponding to the indices 3 and 4 of the first frame 31 with the pixel values corresponding to the indices 3 and 4 among the second base frames have. In this way, the generating unit 120 can generate the first frame 31 by sequentially arranging O, T1, and T2.

The generating unit 120 may generate the second frame 32 and the third frame 33 similarly to the method of generating the first frame 31. [ That is, the generator 120 matches the information of the first base frame, not the frame corresponding to the original image, to the index (1, 4) of the second frame 32, and sequentially arranges T1, T2, Thereby generating the second frame 32. [

In addition, the generator 120 matches the frame corresponding to the original image with the second base frame information that is not the first base frame at indexes (1, 4) of the third frame 33, and outputs T2, T1, And the third frame 33 is generated.

4, an average of pixel values of a specific pixel or a specific region of the first frame 31, the second frame 32, and the third frame 33 generated by the generating unit 120 may be an original The average value of the pixel values of the specific pixel or the specific region of the frame corresponding to the image is equal to the average value of the pixel values of the specific region or the specific region.

4 is merely an example of the original image capture preventing apparatus 100 according to an embodiment of the present invention. The generating unit 120 may be configured to arrange a frame corresponding to an original image, a base frame The order and methodology may vary.

Also, there may be more than one base frame 110 of the original image capture prevention apparatus 100 according to an embodiment of the present invention.

That is, the first basic frame unit 110 generates two or more different basic frames using a frame corresponding to the original image, and the second basic frame unit 110 generates the first basic frame unit Or two or more modified basic frames different from each other using a frame corresponding to two or more different basic frames and / or an original image generated by the plurality of basic frames. The second base frame unit 110 may be modified such that the generation unit 120 described with reference to Figure 4 generates the first frame 31, the second frame 32 and the third frame 33, The generated base frame can be generated.

The generating unit 120 may generate the first frame 31, the second frame 32, and the third frame 33 using the modified base frame and / or the frame corresponding to the original image.

The method for generating the first frame 31, the second frame 32, and the third frame 33 using the modified base frame and / The method described with reference to FIG. 4 can be used.

In addition, the generation unit 120 may generate a different frame from a frame corresponding to the original image by giving different values to the pixel values in units of frames, and the present invention can prevent the original image from being captured. Specifically, the generation unit 120 generates a frame corresponding to an original image with different mutation periods, for example, 2 frames, 4 frames, and so on, and different mutual widths (for example, 3, 5, Lt; RTI ID = 0.0 > frame. ≪ / RTI > For example, the generator 120 may generate different frame periods such as {+3, -3}, {+5, -5}, {+ 1, It is possible to generate a frame by changing the width.

In addition, in the case of FIG. 3, frames generated by the generating unit 120 can be prevented from capturing an original image by generating frames such that the same area as a frame corresponding to the original image does not exist.

The generating unit 120 may be configured to capture a portion of the frames generated by the generating unit 120 and to combine the captured frames to generate the same or similar image as the original image, The number can be adjusted. Alternatively, when the providing unit 130 transmits a frame generated by the generating unit 120, a sequence of pixel values of an arbitrary frame is transmitted in an irregular or periodic manner, It is possible to prevent the restoration of the original image through synthesis.

The providing unit 130 transmits the sequence reversely to provide the original image visually through the frame repeatedly and sequentially provided even when the sequence of pixel values of an arbitrary frame is transmitted inversely, A sequence of pixel values of another frame may also be transmitted inversely.

Referring again to FIG. 1, the providing unit 130 sequentially and repeatedly transmits the frame data generated by the generating unit 120.

The providing unit 130 may sequentially and repeatedly transmit the frame data generated by the generating unit 120 at a speed that allows the human's eyes to perceive as a single image through a plurality of frames due to the optical illusion effect . That is, the providing unit 130 sequentially and repeatedly transmits a plurality of frames different from the frame corresponding to the original image, and a viewer of the viewer can visually receive an image identical or similar to the original image.

The providing unit 130 may transmit frames generated by the generating unit 120 using wired or wireless communication with a device or a module connected to the display device of the user.

For example, assume that the frame rate is such that a person can recognize a single image by sequentially and repeatedly transmitting a plurality of frames, for example, 60 frames per second. In this assumption, the first frame 31, the second frame 32, and the third frame 33 generated by the generation unit 120 shown in FIG. 4, for example, Are sequentially and repetitively transmitted. The second frame 32, the third frame 33, the first frame 31, the second frame 32, and the third frame 33 for one second. The first frame 31, the second frame 32, the second frame 32, the third frame 33, and the 20th frame 60 in total in order of the first frame 31, the second frame 32, Can be repeatedly transmitted.

The user can visually recognize the data provided by the providing unit 130 with the display device and recognize the same image as the original image by visually recognizing the average value of each pixel of 60 frames per second.

The providing unit 130 may transmit only a part or all of the frames generated by the generating unit 120. [

For example, the present invention may be applied to a technology such as a character recognition confirmation service system for preventing automatic subscription on-line, such as Captcha.

That is, some or any of the frames generated by the generating unit 120 of the present invention may be used as a recognition target character or image to be recognized for automatic subscription prevention. The image generated by the generation unit 120 of the original image capture prevention apparatus 100 according to the present invention can be a series of fragmented and distorted streaming images which can improve the difficulty of character recognition, It can be effective.

5 is a configuration diagram of an original image capture prevention apparatus according to an embodiment of the present invention.

The original image capture prevention apparatus 100 according to an embodiment of the present invention may have the configuration shown in FIG. The original image capture prevention apparatus 100 includes a processor 10 that executes an instruction, frame data corresponding to the original image, frame data generated by the base frame unit 110, frame data generated by the generation unit 120, Etc., a memory 40, and a network interface 50 for transmitting / receiving data to / from an external device.

At least two or more different frames different from one frame corresponding to the original image are generated in the storage device 30 using an original image of one frame, Generating a frame such that an average of specific pixel values in the frame corresponding to the original image is equal to or within a predetermined error range of the specific pixel value in the frame corresponding to the original image, and generating a frame in which the generated at least two frames are repeatedly transmitted A program for performing a providing process of providing a user with an original image visually may be stored, and the program may be loaded into a memory and then executed through the processor 10. [ The program stored in the storage device 30 may perform at least one of the processes described with reference to Figures 1-4.

6 is a flowchart illustrating an original image capture prevention method according to an exemplary embodiment of the present invention.

Referring to FIG. 6, an original image capture prevention method according to an exemplary embodiment of the present invention will be described. Referring to FIG. 6, a generation unit 120 generates a new image by using one frame corresponding to an original image, At least two or more different frames are generated (step S610). At least two or more different frames generated by the generating unit 120 may be the same as the specific-cell values of the specific coordinate in the frame corresponding to the original image or within a predetermined range .

Also, the generating unit 120 may generate two or more different frames by using not only the frame corresponding to the original image but also the base frame generated by the base frame unit 110 together.

The providing unit 130 may transmit a plurality of frames generated by the generating unit 120 to a display device of the user or a device or module connected to the display device in operation S620. The providing unit 130 may sequentially and repeatedly transmit a plurality of frames generated by the generating unit 120 at a speed that can be recognized as one image by the human eye.

The original image capture prevention apparatus 100 and method according to the present invention can prevent a user from capturing an original image while providing the user with an image visually identical to the original image.

Accordingly, the original image capture prevention apparatus 100 and method according to the present invention can prevent illegal copying by using an image to be copyrighted, an image to be prevented from illegal copying, an official document, and the like.

In addition, the original image capture prevention apparatus 100 and method according to the present invention can share an image with a counterpart in a variety of services such as a social network service, a chat, a meeting, and an online contact arrangement service, but can not capture or store the image.

In addition, the original image capture prevention apparatus 100 and method according to the present invention can be used for character recognition service for preventing automatic subscription on-line, thereby providing a series of fragmented and distorted streaming images.

Each component in FIG. 1 may refer to software or hardware such as a field-programmable gate array (FPGA) or an application-specific integrated circuit (ASIC). However, the components are not limited to software or hardware, and may be configured to be in an addressable storage medium and configured to execute one or more processors. The functions provided in the components may be implemented by a more detailed component or may be implemented by a single component that performs a specific function by combining a plurality of components.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

Claims (20)

Wherein at least two frames different from one frame corresponding to the original image are generated by using an original image of one frame, A generating unit for generating a frame such that an average is equal to or within a predetermined error range in the frame corresponding to the original image; And
And a providing unit that transmits the generated at least two frames sequentially and repeatedly to visually provide an original image to a user. The method according to claim 1,
When the frame generated by the generating unit is a first frame and a second frame,
Wherein the generation unit comprises:
Generating the first frame and the second frame such that an RGB value corresponding to the specific pixel in the first frame and an RGB value corresponding to the specific pixel in the second frame are different from each other,
The first value of the RGB value corresponding to the specific pixel in the first frame and the average value of the RGB value corresponding to the specific pixel in the second frame are equal to the RGB value corresponding to the specific pixel of the original image, And the second frame. 3. The method of claim 2,
Wherein the generation unit comprises:
The RGB value of the specific pixel in the first frame and the RGB value of the specific pixel in the second frame are generated in consideration of the brightness characteristic of the display device that visually provides the at least two frames transmitted by the providing unit The original image capture prevention device. 3. The method of claim 2,
If the information on the addition or subtraction of the RGB values of the frame corresponding to the original image is a in order to generate a plurality of images different from the frame corresponding to the original image,
Wherein the generation unit first processes the frame corresponding to the original image so that the RGB value of the frame corresponding to the original image is included in a range from a to 255-a, And generating at least two frames. 3. The method of claim 2,
If there is a third frame in the frame generated by the generation unit,
Wherein the generator generates the RGB value corresponding to the specific pixel in the first frame different from at least one of the RGB value corresponding to the specific pixel in the first frame and the RGB value corresponding to the specific pixel in the second frame, To generate the third frame,
An RGB value corresponding to the specific pixel in the first frame, an RGB value corresponding to the specific pixel in the second frame, and an RGB value corresponding to the specific pixel in the third frame in the first frame, And generates the first frame and the second frame so as to be equal to an RGB value corresponding to the specific pixel in a frame corresponding to the original image. The method according to claim 1,
Wherein the generation unit comprises:
A second frame is generated by dividing a frame corresponding to the original image into a predetermined region, generating a first frame by adjusting pixel values of the specific region, adjusting pixel values of another specific region, Adjusting a pixel value to generate a third frame,
The first frame, the second frame, and the third frame so that the average of the pixel values of the first frame, the second frame, and the third frame is equal to the pixel value of the frame corresponding to the original image , Original image capture prevention device. The method according to claim 1,
Wherein the original image capture prevention device comprises:
Further comprising a base frame unit for generating a first base frame and a second base frame, which are frames used by the generator to generate the at least two frames using the frame corresponding to the original image,
Wherein the base frame unit is configured such that an average value of pixel values of the first base frame and the second base frame is equal to a pixel value of a frame corresponding to the original image, Generating the first base frame and the second base frame so that pixel values of the frames are different from each other,
Wherein the generating unit generates the two or more different frames using a frame corresponding to the original image, a first base frame, and a second base frame. 8. The method of claim 7,
When generating the first frame, the second frame, and the third frame, which are two or more different frames,
The first frame, the second frame, and the third frame are divided into a plurality of zones under the same reference, and a pixel value of a specific zone among the plurality of zones is divided into a frame corresponding to the original image, Determining a value of a pixel corresponding to the same zone as the specific zone in one of the frames of the second base frame,
Wherein the average value of the pixel values corresponding to the same coordinates of the first frame, the second frame and the third frame is equal to a pixel value corresponding to the same coordinates of a frame corresponding to the original image, And determines a pixel value of the particular zone to match. 9. The method of claim 8,
Wherein the generating unit matches a pixel value corresponding to a first region of a frame corresponding to the original image in a first region of the divided regions of the first frame and a second region of the region adjacent to the first region, A pixel value corresponding to the same zone as the second zone of the first base frame is matched and a third zone of the zone adjacent to the first zone corresponds to the same zone as the third zone of the second base frame Generates a first frame by matching pixel values,
Wherein the first zone of the second frame matches a pixel value corresponding to the first zone of the first base frame, and the second zone of the zone adjacent to the first zone matches the pixel value of the second base frame, A pixel value corresponding to the same zone as the second zone is matched with a pixel value corresponding to the same zone as the third zone among the frames corresponding to the original image, Generates a second frame,
Wherein the first zone of the third frame matches a pixel value corresponding to the same zone as the first zone of the third frame and the second zone of the zone adjacent to the first zone matches the pixel value of the zone of the second frame, The pixel value corresponding to the same zone as the second zone is matched and the third zone of the zone adjacent to the first zone matches pixel values corresponding to the same zone as the third zone of the first base frame, The original image capture prevention device. 10. The method of claim 9,
The base frame section includes:
Generating a first basic frame by applying a blur filter to a frame corresponding to the original image,
And generating the second base frame by setting a pixel value obtained by subtracting each pixel value of the first base frame to twice the pixel value of the frame corresponding to the original image as a pixel value of the second base frame, Original image capture prevention device. Wherein at least two frames different from one frame corresponding to the original image are generated by using an original image of one frame, A generating step of generating a frame such that an average is equal to or within a predetermined error range in the frame corresponding to the original image; And
And providing the original image visually to the user by sequentially and repeatedly transmitting the generated at least two frames. 12. The method of claim 11,
If the frame generated by the generating step is a first frame and a second frame,
Wherein the generating comprises:
Generating the first frame and the second frame such that an RGB value corresponding to the specific pixel in the first frame and an RGB value corresponding to the specific pixel in the second frame are different from each other,
The first value of the RGB value corresponding to the specific pixel in the first frame and the average value of the RGB value corresponding to the specific pixel in the second frame are equal to the RGB value corresponding to the specific pixel of the original image, And generating the second frame. 13. The method of claim 12,
Wherein the generating comprises:
The RGB value of the specific pixel in the first frame and the RGB value of the specific pixel in the second frame are generated in consideration of the brightness characteristic of the display method that visually provides the at least two frames transmitted by the providing step How to prevent original image capture. 13. The method of claim 12,
If there is a third frame in the frame generated by the generating step,
Wherein the generating of the RGB value corresponds to at least one of an RGB value corresponding to the specific pixel in the first frame and an RGB value corresponding to the specific pixel in the second frame, The third frame being different from the first frame,
An RGB value corresponding to the specific pixel in the first frame, an RGB value corresponding to the specific pixel in the second frame, and an RGB value corresponding to the specific pixel in the third frame in the first frame, Wherein the first frame and the second frame are generated such that the first frame and the second frame are identical to the RGB values corresponding to the specific pixel in the frame corresponding to the original image. 12. The method of claim 11,
Wherein the generating comprises:
A second frame is generated by dividing a frame corresponding to the original image into a predetermined region, generating a first frame by adjusting pixel values of the specific region, adjusting pixel values of another specific region, Adjusting a pixel value to generate a third frame,
The first frame, the second frame, and the third frame so that the average of the pixel values of the first frame, the second frame, and the third frame is equal to the pixel value of the frame corresponding to the original image How to prevent original image capture. 12. The method of claim 11,
The original image capture prevention method includes:
Further comprising a base frame step of generating a first base frame and a second base frame, which are frames used by the generation step to generate the at least two frames using the frame corresponding to the original image,
Wherein the first frame and the second frame are identical in pixel value of the first frame and the second frame, respectively, and the average value of the pixel values of the first frame and the second frame is equal to the pixel value of the frame corresponding to the original image, The first base frame and the second base frame are generated so that the pixel values of the base frame are different from each other,
Wherein the generation step generates the two or more different frames using a frame corresponding to the original image, a first base frame, and a second base frame. 17. The method of claim 16,
Wherein the generation step comprises the steps of: when generating the first frame, the second frame and the third frame, which are two or more different frames,
The first frame, the second frame, and the third frame are divided into a plurality of zones under the same reference, and a pixel value of a specific zone among the plurality of zones is divided into a frame corresponding to the original image, Determining a value of a pixel corresponding to the same zone as the specific zone in one frame of the second base frame,
Wherein the average value of the pixel values corresponding to the same coordinates of the first frame, the second frame and the third frame is equal to a pixel value corresponding to the same coordinates of a frame corresponding to the original image, Determining a pixel value of the particular region to match. 18. The method of claim 17,
Wherein the generating of the first frame includes matching a pixel value of the first region of the first frame and a pixel value of the first region of the frame corresponding to the original image, Matches a pixel value corresponding to the same zone as the second zone of the first base frame and a third zone of the zone adjacent to the first zone corresponds to the same zone as the third zone of the second base frame To generate a first frame,
Wherein the first zone of the second frame matches a pixel value corresponding to the first zone of the first base frame, and the second zone of the zone adjacent to the first zone matches the pixel value of the second base frame, A pixel value corresponding to the same zone as the second zone is matched with a pixel value corresponding to the same zone as the third zone among the frames corresponding to the original image, Generates a second frame,
Wherein the first zone of the third frame matches a pixel value corresponding to the same zone as the first zone of the third frame and the second zone of the zone adjacent to the first zone matches the pixel value of the zone of the second frame, The pixel value corresponding to the same zone as the second zone is matched and the third zone of the zone adjacent to the first zone matches pixel values corresponding to the same zone as the third zone of the first base frame, Of the original image. 18. The method of claim 17,
Wherein the basic frame step comprises:
Generating a first basic frame by applying a blur filter to a frame corresponding to the original image,
And generating the second base frame by setting a pixel value obtained by subtracting each pixel value of the first base frame to twice the pixel value of the frame corresponding to the original image as a pixel value of the second base frame, How to prevent original image capture. Wherein at least two frames different from one frame corresponding to the original image are generated by using an original image of one frame, A generating step of generating a frame such that an average is equal to or within a predetermined error range in the frame corresponding to the original image; And
And providing the original image to the user visually by repeatedly transmitting the generated at least two frames sequentially and repeatedly.
KR20130102404A 2013-08-28 2013-08-28 Apparatus and Method for Preventing Image Capture And Recording Medium Recording the Program Thereof KR20150025146A (en)

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