KR101481798B1 - Method and apparatus for generating bulb shutter image - Google Patents

Method and apparatus for generating bulb shutter image Download PDF

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Publication number
KR101481798B1
KR101481798B1 KR1020140090772A KR20140090772A KR101481798B1 KR 101481798 B1 KR101481798 B1 KR 101481798B1 KR 1020140090772 A KR1020140090772 A KR 1020140090772A KR 20140090772 A KR20140090772 A KR 20140090772A KR 101481798 B1 KR101481798 B1 KR 101481798B1
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KR
South Korea
Prior art keywords
image
shutter
user
generating
composite image
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KR1020140090772A
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Korean (ko)
Inventor
이성호
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주식회사 모리아타운
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/222Studio circuitry; Studio devices; Studio equipment ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, TV cameras, video cameras, camcorders, webcams, camera modules for embedding in other devices, e.g. mobile phones, computers or vehicles
    • H04N5/262Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
    • H04N5/265Mixing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/222Studio circuitry; Studio devices; Studio equipment ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, TV cameras, video cameras, camcorders, webcams, camera modules for embedding in other devices, e.g. mobile phones, computers or vehicles
    • H04N5/225Television cameras ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, camcorders, webcams, camera modules specially adapted for being embedded in other devices, e.g. mobile phones, computers or vehicles
    • H04N5/232Devices for controlling television cameras, e.g. remote control ; Control of cameras comprising an electronic image sensor
    • H04N5/23218Control of camera operation based on recognized objects
    • H04N5/23219Control of camera operation based on recognized objects where the recognized objects include parts of the human body, e.g. human faces, facial parts or facial expressions
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/222Studio circuitry; Studio devices; Studio equipment ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, TV cameras, video cameras, camcorders, webcams, camera modules for embedding in other devices, e.g. mobile phones, computers or vehicles
    • H04N5/225Television cameras ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, camcorders, webcams, camera modules specially adapted for being embedded in other devices, e.g. mobile phones, computers or vehicles
    • H04N5/232Devices for controlling television cameras, e.g. remote control ; Control of cameras comprising an electronic image sensor
    • H04N5/23229Devices for controlling television cameras, e.g. remote control ; Control of cameras comprising an electronic image sensor comprising further processing of the captured image without influencing the image pickup process

Abstract

The present invention relates to a method and apparatus for generating a B-shutter image. The B-shutter image generating apparatus of the present invention includes an image obtaining unit for obtaining a plurality of image frames photographed at predetermined intervals, a first image processing unit for cumulatively synthesizing the plurality of image frames with respect to a partial region to generate a cumulative composite image, And a second image processor for generating a B shutter composite image frame by combining the generated cumulative composite image and a reference image frame selected by the user among the plurality of image frames. According to the present invention, by combining a cumulative composite image obtained by cumulatively combining a plurality of image frames photographed at predetermined intervals with a reference image frame, it is possible to photograph a long-exposure photograph on a smartphone and a day during which iris adjustment is impossible, It is possible to generate a B shutter image photographed with a long exposure for some specific areas while the person or the background is not shaken.

Description

METHOD AND APPARATUS FOR GENERATING BULB SHUTTER IMAGE < RTI ID = 0.0 >

The present invention relates to a method and apparatus for generating a B-shutter image.

In general, the camera uses a high-speed shutter that accepts light for a short time of 1/4000 second, 1/500 second. However, in the nighttime or in a region where there is no light, it is possible to open the shutter every few seconds or tens of seconds to continuously receive the minute light. The shutter speed at this time is referred to as a B-shutter.

The long exposure is a photographing technique in which the time taken to receive light by using the B shutter is relatively long and the trajectory of the vehicle or the trajectory of the moving object appears on the photograph. Also, a method of transmitting a specific message by using a B shutter so that a moving line and a trajectory of a subject appear on a photograph may be used. For example, if you set the camera to B Shutter at night, the movement of the light can be photographed and the name or a specific message can be displayed on the picture.

However, in the conventional digital SLR camera, it is impossible to shoot long exposures through a camera mounted on a smart phone or the like, which can not control the conventional iris. In order to express a specific message through a conventional DSLR camera, The person involved, the background was shaken and the person and the background could not be expressed clearly in the photograph. In addition, according to the conventional photographing apparatus, there is a problem that the B shutter image can not be photographed during the day.

The present invention combines a cumulative composite image obtained by cumulatively synthesizing a plurality of image frames photographed at regular intervals with a reference image frame to capture a long exposure photograph in a smartphone and a day during which iris adjustment is impossible, Or a B shutter image photographed with a long exposure for a specific area while the background is not shaken.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention which are not mentioned can be understood by the following description and more clearly understood by the embodiments of the present invention. It will also be readily apparent that the objects and advantages of the invention may be realized and attained by means of the instrumentalities and combinations particularly pointed out in the appended claims.

According to another aspect of the present invention, there is provided an apparatus for generating a B-shutter image, including an image obtaining unit obtaining a plurality of image frames photographed at predetermined intervals, a cumulative image synthesizer for cumulatively synthesizing the plurality of image frames, And a second image processor for generating a B shutter composite image frame by combining the generated cumulative composite image and the reference image frame selected by the user among the plurality of image frames.

According to another aspect of the present invention, there is provided a method of generating a B-shutter image, comprising the steps of: acquiring a plurality of image frames photographed at predetermined intervals; accumulating the plurality of image frames with respect to a partial area to generate a cumulative composite image; And combining the composite image and the reference image frame selected by the user among the plurality of image frames to generate a B-shutter composite image frame.

As described above, according to the present invention, by combining a cumulative composite image obtained by cumulatively synthesizing a plurality of image frames photographed at predetermined intervals with a reference image frame, it is possible to provide a smartphone which can not control iris, It is possible to generate a B-shutter image photographed with a long exposure for a specific area while the person or the background is not shaken at night.

1 is a configuration diagram of an apparatus for generating a B shutter image according to an embodiment of the present invention;
FIG. 2 illustrates a process of generating a B-shutter composite image frame according to an embodiment of the present invention. FIG.
3 illustrates a B-shutter composite image frame in accordance with one embodiment of the present invention.
4A is a flowchart of a method of generating a B-shutter image according to an embodiment of the present invention.
FIG. 4B is a flowchart of a method of generating a B shutter image according to an exemplary embodiment of the present invention; FIG.

The above and other objects, features, and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings, which are not intended to limit the scope of the present invention. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to denote the same or similar elements.

In a DSLR camera, it is possible to take a B shutter image by exposing the aperture for a long time. However, cameras mounted on portable devices such as smart phones do not control iris exposure, so it is impossible to shoot B shutter images through the hardware configuration. Also, as described above, in the related art, even if the B shutter image is photographed through the hardware configuration, the person or the background in the image can not be photographed due to the long time exposure, and expression using the long exposure is not possible during the daytime.

SUMMARY OF THE INVENTION The present invention has been made in view of these points, and it is an object of the present invention to provide a method and an apparatus for synthesizing a cumulative composite image obtained by cumulatively synthesizing a plurality of image frames captured at certain intervals with a reference image frame, It is possible to capture a long-exposure photograph such as a photographed image, and to create a B-shutter image photographed with a long exposure for a certain area while the person or the background is not shaken at night.

1 is a configuration diagram of an apparatus for generating a B shutter image according to an embodiment of the present invention. Referring to FIG. 1, an apparatus for generating a B shutter image according to the present invention includes an image obtaining unit 102 for obtaining a plurality of image frames, a first image generating unit 102 for cumulatively synthesizing a plurality of image frames, A second image processing unit 106 for combining the cumulative composite image and the reference image frame to generate a B-shutter composite image frame, and a post-processing unit 108 for post-processing the B-shutter composite image frame.

The image acquiring unit 102 acquires a plurality of image frames photographed at regular intervals. The image acquiring unit 102 acquires a plurality of image frames photographed through a camera, and the camera is not limited to the type and shape, and includes all the cameras mounted on a portable device such as a digital camera and a smart phone. The image acquiring unit 102 may acquire a plurality of image frames photographed at a constant interval through the continuous shooting mode of the camera or moving picture shooting.

In one embodiment of the present invention, the image acquiring unit 102 may start shooting or end shooting according to the user's voice or expression. The image acquiring unit 102 may start shooting according to the user's voice, acquire a plurality of image frames captured at predetermined intervals, and end the shooting according to the user's voice. As a result, a plurality of image frames photographed between the start of photographing and the end of photographing are obtained. In addition, the user's facial expression may be recognized and the photographing may be started or the photographing may be terminated accordingly. For example, it is possible to recognize a gesture such as a user's facial expression or a wink or a V-sign, and start shooting or end shooting. As a result, the user can conveniently shoot without pressing the shooting start button or shooting end button of the camera or the smartphone.

The first image processing unit 104 performs a function of generating a cumulative composite image obtained by cumulatively synthesizing a plurality of image frames with respect to a partial area. In the plurality of image frames, there may be a region in which a gesture is expressed through a body such as a user's arm or leg, an area in which a user's face is recognized, and an area in which a background is recognized.

The first image processing unit 104 may compare a plurality of image frames among the gesture recognition area, the face recognition area, and the background recognition area, respectively, to detect an area changed by a predetermined reference or more and determine the motion area as a motion area in which the user's motion occurs. The first image processing unit 104 may accumulate the images in the motion area for each of the plurality of image frames to generate a cumulative composite image. As a result, the cumulative composite image will overlay the user's gesture and display the trajectory of the user's gesture moving.

In addition, among a plurality of image frames, an image frame in which a character suddenly caught outside the object to be photographed may be included. The first image processing unit 104 may synthesize a plurality of image frames except for some image frames when the image frames are cumulatively synthesized with respect to a partial area.

In an embodiment of the present invention, the first image processing unit 104 may recognize a user's gesture by analyzing a plurality of image frames to determine an area to be accumulated and synthesized for a plurality of image frames.

The user's gesture can be recognized by detecting movement of a part of the user's body such as an arm or a leg, and can be recognized as a gesture of the user when the user moves a certain distance or more as a result of comparing each of the plurality of image frames. For example, the face of a user photographed in a plurality of image frames will have a smaller change than the motion of the arm. The first image processing unit 104 can recognize the motion of the arm having a relatively large change as a user's gesture.

The first image processing unit 104 determines a motion area based on the recognized user's gesture, and accumulates the plurality of image frames with respect to the determined motion area to generate a cumulative composite image. As a result, the locus on which the user's gesture has moved can be overlaid and displayed in the cumulative composite image.

Also, in another embodiment of the present invention, the first image processing unit 104 may display each of the recognized motion regions, and may accumulate a plurality of image frames with respect to an area selected by the user, have.

The second image processing unit 106 performs a function of generating a B-shutter composite image frame by combining the cumulative composite image generated through the first image processing unit 104 with a reference image frame. The reference image frame may be a user selected image frame among a plurality of image frames, and a cumulative composite image may be synthesized to a partial area of the reference image frame to generate a B shutter composite image frame. The reference image frame may be selected by the user, selected from the first image frame of the plurality of image frames, the last captured image frame, or an image frame synthesized therefrom.

As a result, the B shutter composite image frame generated by the second image processing unit 106 may include a person area, a background area, and a gesture area, and in the gesture area, images obtained by accumulating and compositing a plurality of image frames are synthesized . That is, a plurality of image frames are accumulated and synthesized in a partial area of the B-shutter composite image frame, and the user's gesture is overlaid. Since the reference image frame in which the person or background is not cumulatively synthesized is synthesized, A B shutter composite image in which a message to be transmitted is expressed can be obtained.

In an embodiment of the present invention, the B shutter image generation apparatus of the present invention may further include a post-processing unit 108 for post-processing the B shutter composite image. As described above, the B shutter composite image may include a person area, a background area, and a gesture area. Depending on the user's selection, the remaining area except for a specific area may be out-focused, Post-processing such as molding correction can be performed. For this, the post-processing unit 108 may include a photo correction algorithm for image processing.

2 is a diagram illustrating a process of generating a B-shutter composite image frame according to an exemplary embodiment of the present invention. Referring to FIG. 2, the image acquiring unit 102 acquires a plurality of image frames 202 photographed at regular intervals. The plurality of image frames 202 may include a person area, a background area, and a gesture area of the user, and a plurality of image frames 202 that are successively photographed at regular intervals through a moving picture photographing or a continuous photographing of the camera may be obtained .

The first image processing unit 104 accumulates a plurality of image frames 202 with respect to a partial area to generate a cumulative composite image 204. As described above, the first image processing unit 104 can detect a main body part such as the user's arms and legs and analyze a plurality of image frames to recognize a gesture according to movement of a main body part. The first image processing unit 104 may determine the motion area based on the recognized user's gesture, and may accumulate the plurality of image frames with respect to the determined motion area to generate the accumulated composite image 204. [ In this process, the first image processing unit 104 can synthesize an image frame in which a person or an object suddenly interrupted is excluded. As a result, the user's gesture will be overlaid in the cumulative composite image.

The second image processing unit 106 synthesizes the cumulative composite image 204 and the reference image frame 206 selected by the user to generate the B shutter composite image frame 208. [

As a result, the person or background of the B-shutter composite image frame 208 is clearly displayed, and the user's gestures can be cumulatively synthesized and represented on the B-shutter composite image frame to convey messages of hearts, specific characters .

3 is a diagram illustrating a B-shutter composite image frame in accordance with an embodiment of the present invention. Referring to FIG. 3, in the motion area 306 of the B-shutter composite image frame 302, a cumulative composite image 306 in which a plurality of image frames are accumulated is synthesized.

In FIG. 3, a user's heart-shaped gesture is recognized, and a plurality of image frames are cumulatively synthesized to display a gesture trace 304 of the user. Also, as shown in FIG. 3, the image obtaining unit 102 may recognize the user's facial expression 3120 or V-sign and start or end the photographing.

4A is a flowchart of a method of generating a B-shutter image according to an embodiment of the present invention. Referring to FIG. 4A, first, the image obtaining unit obtains a plurality of image frames photographed at regular intervals (S402). The plurality of image frames can be photographed through a digital camera or a camera mounted on a smart phone.

Next, the first image processing unit cumulatively synthesizes a plurality of image frames with respect to a partial area to generate a cumulative composite image (S404). Here, some of the areas may be motion areas determined by comparing the plurality of image frames with each other to determine that the user's motion has occurred. In step S404, the first image processing unit may accumulate the images in the motion area for each of the plurality of image frames to generate a cumulative composite image.

Then, the second image processing unit combines the cumulative composite image and the reference image frame to generate a B shutter composite image (S406). The reference image frame may be selected by the user, and may be selected from among the first captured image frame or the last captured image frame among the plurality of acquired image frames.

Finally, the post-processing unit 108 post-processes the B shutter composite image frame (S408). If a plurality of image frames are photographed in backlight through step S408, the darkened image can be corrected brightly and clearly. In addition, as described above, image processing can be performed using out-focusing to emphasize a person, a background, or a cumulative composite image included in the B shutter composite image.

4B is a flowchart of a method of generating a B shutter image according to an embodiment of the present invention. Referring to FIG. 4B, the step S422 of acquiring a plurality of image frames photographed at predetermined intervals includes a step S420 of recognizing the user's voice and starting shooting (S420), and terminating the shooting S424).

Then, a plurality of image frames are analyzed to recognize the user's gesture (S426). In step S426, each of the plurality of image frames is compared with each other to detect a feature point having a change over a certain range, and the locus of the feature point can be recognized as a gesture. When the user's gesture is recognized, a motion area is determined based on the recognized gesture (S428).

Then, a plurality of image frames are cumulatively synthesized with respect to the motion area to generate a cumulative composite image (S430). If a plurality of image frames are cumulatively synthesized with respect to the motion area through step S430, the user's gesture will be overlaid on the accumulated composite image.

Finally, the B shutter composite image frame is generated by combining the cumulative composite image and the reference image frame (S432). As a result, a plurality of image frames are accumulated and synthesized in a partial area of the B-shutter composite image frame, and the user's gesture is overlaid. A person or a background is synthesized with a reference image frame that is not cumulatively synthesized, A B shutter composite image in which a message to be transmitted is expressed can be obtained.

According to the present invention as described above, a cumulative composite image obtained by cumulatively combining a plurality of image frames photographed at predetermined intervals with a reference image frame is combined with a reference image frame, It is possible to generate a B-shutter image photographed with a long exposure for a specific area while the person or the background is not shaken at night.

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, But the present invention is not limited thereto.

Claims (12)

  1. Obtaining a plurality of image frames photographed at regular intervals;
    Accumulating the plurality of image frames with respect to a partial area to generate a cumulative composite image; And
    Generating a B-shutter composite image frame by combining the generated cumulative composite image and a reference image frame selected by the user among the plurality of image frames,
    The step of generating the cumulative composite image
    And accumulating the images in the gesture recognition area among the gesture recognition area, the face recognition area, and the background recognition area included in the plurality of image frames to generate an accumulated composite image
    B How to create a shutter image
  2. The method according to claim 1,
    The step of generating the cumulative composite image
    Analyzing the plurality of image frames to recognize a user's gesture;
    Determining a motion region based on the recognized gesture of the user;
    Generating a cumulative composite image in which the gesture of the user is overlaid by cumulatively synthesizing the plurality of image frames with respect to the motion region
    / RTI > to generate a B-shutter image.
  3. The method according to claim 1,
    The step of generating the cumulative composite image
    Generating a cumulative composite image by cumulatively synthesizing the plurality of image frames with respect to an area selected by a user
    / RTI > to generate a B-shutter image.
  4. The method according to claim 1,
    Post-processing the generated B-shutter composite image frame using a photo correction algorithm for image processing
    And generating a B shutter image.
  5. The method according to claim 1,
    The reference image frame
    The first selected image frame among the plurality of image frames or the last captured image frame
    B How to create a shutter image.
  6. The method according to claim 1,
    The step of acquiring a plurality of image frames photographed at the predetermined intervals
    Starting shooting according to the user's voice or expression; And
    Ending the shooting in accordance with the user's voice or expression
    / RTI > to generate a B-shutter image.
  7. An image obtaining unit obtaining a plurality of image frames photographed at regular intervals;
    A first image processing unit for cumulatively synthesizing the plurality of image frames with respect to a partial area to generate a cumulative composite image; And
    And a second image processor for combining the generated cumulative composite image and a reference image frame selected by the user among the plurality of image frames to generate a B shutter composite image frame,
    The first image processing unit
    Wherein the gesture recognition area, the face recognition area, and the background recognition area included in the plurality of image frames are cumulatively synthesized to generate a cumulative composite image
    B shutter image generating device.
  8. 8. The method of claim 7,
    The first image processing unit
    The method of claim 1, further comprising: analyzing the plurality of image frames to recognize a user's gesture; determining a motion region based on the recognized user's gesture; accumulating the plurality of image frames with respect to the motion region; Generated cumulative composite image
    B shutter image generating device.
  9. 8. The method of claim 7,
    The first image processing unit
    And accumulating the plurality of image frames with respect to an area selected by the user to generate a cumulative composite image
    B shutter image generating device.
  10. 8. The method of claim 7,
    A post-processing unit for post-processing the generated B-shutter composite image frame using a photo correction algorithm for image processing,
    Further comprising: a B shutter image generator for generating a B shutter image;
  11. 8. The method of claim 7,
    The reference image frame
    The first selected image frame among the plurality of image frames or the last captured image frame
    B shutter image generating device.
  12. 8. The method of claim 7,
    The image obtaining unit
    When the user starts the shooting according to the voice or expression of the user or ends the shooting
    B shutter image generating device.
KR1020140090772A 2014-07-18 2014-07-18 Method and apparatus for generating bulb shutter image KR101481798B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100006542A (en) * 2008-07-09 2010-01-19 가시오게산키 가부시키가이샤 Image processing device, image processing method and a computer readable storage medium having stored therein a program
JP2012119858A (en) * 2010-11-30 2012-06-21 Aof Imaging Technology Ltd Imaging device, imaging method, and program
JP2013093863A (en) * 2012-12-06 2013-05-16 Casio Comput Co Ltd Recording controller, recording control method and program
KR20140010805A (en) * 2012-07-17 2014-01-27 박성만 Photographing system and control method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100006542A (en) * 2008-07-09 2010-01-19 가시오게산키 가부시키가이샤 Image processing device, image processing method and a computer readable storage medium having stored therein a program
JP2012119858A (en) * 2010-11-30 2012-06-21 Aof Imaging Technology Ltd Imaging device, imaging method, and program
KR20140010805A (en) * 2012-07-17 2014-01-27 박성만 Photographing system and control method thereof
JP2013093863A (en) * 2012-12-06 2013-05-16 Casio Comput Co Ltd Recording controller, recording control method and program

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