KR20090033952A - Video call device supporting outside image composition and operating method of the same - Google Patents

Video call device supporting outside image composition and operating method of the same Download PDF

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Publication number
KR20090033952A
KR20090033952A KR1020070099038A KR20070099038A KR20090033952A KR 20090033952 A KR20090033952 A KR 20090033952A KR 1020070099038 A KR1020070099038 A KR 1020070099038A KR 20070099038 A KR20070099038 A KR 20070099038A KR 20090033952 A KR20090033952 A KR 20090033952A
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KR
South Korea
Prior art keywords
video
external
caller
image
video call
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KR1020070099038A
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Korean (ko)
Inventor
김창한
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(주)케이티에프테크놀로지스
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Priority to KR1020070099038A priority Critical patent/KR20090033952A/en
Publication of KR20090033952A publication Critical patent/KR20090033952A/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/10—Segmentation; Edge detection
    • G06T7/194—Segmentation; Edge detection involving foreground-background segmentation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/222—Studio circuitry; Studio devices; Studio equipment
    • H04N5/262—Studio 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
    • H04N5/2624—Studio 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 for obtaining an image which is composed of whole input images, e.g. splitscreen
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/222—Studio circuitry; Studio devices; Studio equipment
    • H04N5/262—Studio 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
    • H04N5/265—Mixing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/222—Studio circuitry; Studio devices; Studio equipment
    • H04N5/262—Studio 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
    • H04N5/278—Subtitling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/14—Systems for two-way working
    • H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2201/00—Electronic components, circuits, software, systems or apparatus used in telephone systems
    • H04M2201/50—Telephonic communication in combination with video communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2250/00—Details of telephonic subscriber devices
    • H04M2250/52—Details of telephonic subscriber devices including functional features of a camera

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Telephone Function (AREA)
  • Telephonic Communication Services (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

An external image synthesis support apparatus for image conversation and an operation method thereof in a state which a video call is not interrupted are provided to extract an image or a character in an external moving picture or photograph by a user in a video call. A caller image signal creating part(110) comprises a first camera(111). The caller image signal creating part generates image signal by photographing the caller though the first camera. An outside image input part(120) comprises a second camera(121). The external moving picture or photograph is input from the second camera. An external image extracting part(130) extracts the necessary photograph from the moving picture or the photograph which is input from the outside image input part. An image merging part(140) merges the call party video signal inputted from the picture extracted from the external image extracting part. Video data for the video call is produced.

Description

VIDEO CALL DEVICE SUPPORTING OUTSIDE IMAGE COMPOSITION AND OPERATING METHOD OF THE SAME}

The present invention relates to a video call device and a method of operating the same, and more particularly, a video call device that allows a user to extract a picture or text required from an external video or a picture and transmit the picture or text to a call partner along with the video call screen. And a method of operation.

The recent trend of communication devices is the introduction of a new communication method that can transfer a large amount of multimedia data between callers with the increase of communication speed and the development of video compression technology. As one of such trends, calls and chats among users, mainly voice or text, are gradually changing to video calls, video conferencing, video chats, etc., which can be used to talk or chat while checking the face of the other party.

For example, in a wired video call phone (ISDN), video conferencing solution, and video chat, an image of a caller photographed through a small camera installed in a telephone, a video conferencing device, or a PC is transmitted to the other party, and the image of the other party is also transmitted to the caller. The video call is made possible.

In particular, in the mobile communication field, a video call using a wideband code division multiple access (WCDMA) technology, which belongs to the category of 3G communication (3G), is a representative change. Third generation communication uses frequencies of 2GHz and transfer speeds of up to 2Mbps at 128Kbps. Mobile terminal users can reach speeds of up to 384 Kbps when they are stationary or walking, 128 Kbps in running cars, or 2 Mbps when fixed or mounted. This is the speed at which video can be sent and received, which can bring a fundamental difference in the form of use from the 2nd generation mobile communication. That is, not only video-on-demand (VOD) services of various video contents such as music videos, internet broadcasts, cartoons, news, etc., but also video calls that make a call while checking the appearance of the other party can be used in real time.

Video call as described above can be evaluated as a technology that can fundamentally change the existing communication method. However, the reality is that video telephony does not provide more evolved than the application that the call is possible simply by checking the face between the callers.

For example, it is difficult to respond to a case where a simple picture content such as a map map is to be delivered between callers during a video call, or a simple written content such as a telephone number is transmitted between callers. Currently, devices that support video calls have a problem of using image file transmission or text message transmission after discontinuing a video call.

An object of the present invention for solving the above problems is to provide a video call device that allows the user to extract the necessary picture or text from the external video or picture during the video call and transmit it to the other party with the video call screen.

Another object of the present invention for solving the above problems is to provide a video call method that allows the user to extract the necessary picture or text from the external video or picture during the video call during the video call to the other party with the video call screen will be.

In order to solve the above object of the present invention, the present invention includes a caller video signal generation unit including a first camera and generating a caller video signal by shooting a caller through the first camera, the external video from the second camera Or an external image input unit for receiving a picture, an external image extracting unit for extracting necessary pictures and / or letters from the video or photo received from the external image input unit, and the call with the pictures or / and letters extracted from the external image extracting unit A video merging unit for merging the caller video signal inputted from the child video signal generating unit to generate video call video data; and a video call transmission processor for transmitting the video call video data and the voice data of the caller together. Provided is an external video synthesis support video call device.

Here, the external image extracting unit may be configured to extract necessary pictures or / and letters by imposing transparency other than the necessary pictures or / and letters among the external videos or photos received from the external image input unit.

Here, the external image extracting unit may be configured to extract necessary pictures or characters by removing the background color from the external video or photo received from the external image input unit.

Here, the video merging unit may be configured to merge the picture or / and letters extracted from the external video extracting unit with the caller video signal input from the caller video signal generating unit to generate the video call image data. have.

Here, when the image merging unit is configured to input pictures and / or letters extracted from the external image extracting unit by strokes and receive them as separate data, the image merging unit extracts the pictures or / and letters extracted from the external image extracting unit. The caller video signal inputted from the caller video signal generator may be merged into integrated data to generate the video call image data.

Here, the external video synthesis supporting video call device may be configured as one of a mobile communication terminal supporting a video call, a video conferencing device, a wired video call terminal, and a computer device supporting video chat.

In order to solve the other object of the present invention described above, the present invention provides a video signal generating step of generating a video signal of the caller by shooting the caller through the first camera, an external video or photo input from the second camera The image input step, the external image extraction step of extracting the necessary picture and / and characters from the video or photo received from the external image input step, the picture or / and characters extracted in the external image extraction step and the caller video signal And a video merging step of merging to generate video data for a video call, and a video call transmission process for transmitting the video call video data and the caller's voice data together. It provides a method of operation.

Here, the external image extracting step may be configured to extract necessary pictures or characters by imposing transparency other than the necessary pictures or characters from the external videos or photos inputted from the external image input unit.

The extracting of the external image may include one of extracting a necessary picture or character and removing a background color of the external video or photo received from the external image input unit.

 Here, the video merging step may be configured to generate the video call image data by merging the picture or / and letters input by the external video extraction step and the caller video signal generated in the caller video signal generation step. Can be.

Here, in the image merging step, when the pictures or / and letters extracted in the external image extraction step are input as separate data by inputting them as separate data, the image merging step is the pictures or images extracted through the external image extraction step. It may be configured to generate the video call video data by merging the separate data divided by the stroke of the character and the caller video signal generated in the caller video signal generation step into an integrated data form.

According to the external video synthesizing support video call apparatus and its operation method of the present invention as described above, if it is necessary to transmit texts and pictures that are difficult to transfer only between video callers during a video call, the necessary information is not interrupted. It is possible to deliver easily.

For example, if you want to deliver the contents of a picture such as a map between callers, or if you want to convey the contents written in a text such as a phone number between the callers, take a video or picture containing pictures, etc. It is possible to transfer information from the call counterpart just by doing so.

As the present invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description.

However, this is not intended to be limited to the specific embodiment of the present invention, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Hereinafter, with reference to the accompanying drawings, it will be described in detail a preferred embodiment of the present invention. Hereinafter, the same reference numerals are used for the same components in the drawings, and duplicate descriptions of the same components are omitted.

1 is a block diagram of an external video synthesis support video call apparatus according to the present invention.

The external video synthesis supporting video call device 100 according to the present invention may be variously configured as a wired video call terminal, a video conferencing device, a video chat device, a video call supporting mobile communication terminal, and the like.

Referring to FIG. 1, an external video synthesis supporting video call apparatus 100 according to the present invention includes a caller video signal generator 110, an external video inputter 120, an external video extractor 130, and an image merger ( 140) and the video call transmission processor 150.

2 and 3 are examples of a block diagram of an external video composite video call apparatus described with reference to FIG. 1, which illustrates a case in which a bar type mobile communication terminal is configured.

Hereinafter, a description will be given with reference to FIGS. 2 and 3, which are exemplary configurations of an external video synthesis video call apparatus, together with FIG. 1, which is a block diagram of an external video synthesis support video call apparatus.

Referring to FIG. 1, the caller video signal generation unit 110 includes a first camera 111 and is a component that generates a caller video signal by photographing a caller through the first camera 111. The first camera 111 includes a camera module of a Charge-Coupled Device (CCD) or Complementary Metal-Oxide Semiconductor (CMOS) type, and captures an image of a caller and converts it into an electrical signal to generate a caller video signal. .

FIG. 2 illustrates an example of a front part of a mobile communication terminal supporting a video call as an embodiment of an external video synthesis supporting video call apparatus according to the present invention.

Referring to FIG. 2, there is illustrated an embodiment in which the first camera 111 that can be used as the caller image signal generator 110 of the mobile communication terminal 100 is mounted. The first camera 111 is disposed on the front portion of the mobile communication terminal in which the call screen 181 is configured to easily photograph the caller.

Referring back to FIG. 1, the external image input unit 120 is a component that receives an external video or photo from the second camera 121. The second camera 121 uses a large-capacity pixel so that a large-capacity external video or photo can be clearly input.

3 illustrates a configuration of a rear part of a mobile communication terminal supporting a video call as an embodiment of an external video synthesis supporting video call apparatus according to the present invention.

Referring to FIG. 3, there is illustrated an embodiment in which the mobile communication terminal 100 is equipped with a second camera 121 that can be used as the external image input unit 120. The second camera 121 is mounted on the opposite side of the first camera 111 used in the video signal generator 110 of the caller to easily take an external video or picture including texts and / or pictures necessary during a call. And a camera module of a Charge-Coupled Device (CCD) or Complementary Metal-Oxide Semiconductor (CMOS) type.

Referring again to FIG. 1, the external image extractor 130 may be configured to extract a required picture or photo from a video or photo received from the external image inputter 120. A method of extracting a required picture or picture from a video or picture received from the external image input unit 120 may be performed in the following separate manner.

Transparency on unnecessary parts

Set an arrangement and transparency to insert a pixel with empty pixel values in a portion excluding a required character or / and picture portion from a video or photo received from the external image input unit 120, and the above-described arrangement This method consists of extracting the necessary text or picture by inserting a pixel with a pixel value of zero by applying the transparency and transparency. The advantage is that even if the background color is varied or the necessary letters and / or pictures are distributed, the necessary letters or / and pictures can be extracted.

Blue screen  Background Removal Using

When a video or a picture input from the external image input unit 120 is a video or a picture having a solid background, it is a process of extracting necessary characters or / and pictures by removing the background of a single color. You can extract the text or / and pictures you need only for videos or photos with a solid background color. The extraction process is simple.

The image merger 140 merges the picture or / and text extracted from the external image extractor 130 with the caller image signal input from the caller image signal generator 110 to obtain image data for video call. The component to create. In this case, the merge means that the picture or character input from the external image extracting unit 130 is superimposed on the caller video signal.

At this time, the method of merging the picture or / and characters extracted from the external image extraction unit 130 and the caller video signal input from the caller video signal generation unit 110 may include the following two methods. Can be.

Image merge method

First, a picture or / and text extracted from the external image extractor 130 and a caller video signal input from the caller video signal generator 110 are merged into an image form. That is, the picture or character is superimposed on the video signal of the caller. In this case, the merged video call image data may have a simple configuration, and thus, it is not necessary to have a separate data structure as compared with the conventional video call image data. On the other hand, in this case, it is difficult to re-separate the video signal of the caller from the video signal of the caller and the picture or character input from the external video extracting unit 130 once merged. Become. For example, once merged into an image, it is impossible to magnify, recolor, or move only pictures or text.

How to merge as separate data

Second, separate the picture or / and characters extracted from the external image extraction unit 130 for each stroke and analyze the rule by the vector unit to convert the picture or / and characters as vector data, and convert the video signal and the video signal of the caller The video call video data may be constructed by merging the vector data of the drawn picture and / or letters as separate data.

Alternatively, the video call by converting the picture or / and text extracted from the external video extraction unit 130 into a separate image file, and merges the video signal of the caller and the separate image data of the extracted picture or / and text as separate data It may also be able to configure the video data for.

As such, when video data for video call is formed by merging pictures or texts as separate data, it may have advantages and disadvantages opposite to those of merging the first image. That is, there is a disadvantage in providing a separate data structure, but there is an advantage that it is possible to enlarge, recolor, move, and modify only pictures or / and letters.

The video call transmission processor 150 is a component that transmits the video call video data merged by the video merger 140 and the voice data of a caller together. The video call transmission processor 150 receives the caller's voice data and transmits it through the communication network 160 together with the video call image data merged by the video merger 140. The operation of the video call transmission processor 150 may be configured in the same manner as the video call processing and operation of the conventional video call apparatus.

On the other hand, as shown in Figure 1, the communication network 160 may be a variety of forms, such as a wireless communication network, ISDN (Integrated Services Digital Network) network, PSTN (Public Switched Telephone Network) network and the Internet network. That is, it will be apparent to those skilled in the art that various types of wired and wireless communication networks that can be obtained now or in the future may be applied to the communication network 170.

4 is a flowchart illustrating a method of operating an external video synthesis apparatus supporting a video call according to the present invention.

Referring to FIG. 4, the operation method of the external video synthesis supporting video call apparatus according to the present invention includes generating a caller video signal (S100), an external video input step (S110), an external video extraction step (S120), and a caller video. It may include a signal generation step (S130), image merging step (S140), and video call transmission processing step (S150).

The video signal generating step (S100) is a step of generating a video signal of the caller by photographing the caller through the camera. The video signal generator 110 described above with reference to FIG. 1 photographs the video of the caller using the first camera and converts the video of the caller into an electrical signal to generate and output the caller video signal.

The external image input step S110 is a step of receiving an external video or photo from the second camera 121. Since the second camera 121 is disposed on the opposite side to the first camera 111 generating the caller video signal, a video or picture including a picture or text to be synthesized during a call can be received.

The external image extraction step S120 is a step of extracting necessary characters and / or pictures from the video or photo received from the external image input step S110. As described above, the step of extracting the necessary letters and / or pictures is performed in a manner of imparting transparency to unnecessary parts or in a separate way of removing a background using a blue screen.

The video merging step (S130) is a step of generating video call image data by merging the caller video signal with the picture or / and text extracted in the external video extraction step (S110). As described above, the merging of the picture or / and letters with the caller video signal may be accomplished by merging in the form of an image or separately merging the separate data and the caller video signal.

The video call transmission processing step (S140) is a step of transmitting voice data of a caller separately received together with the video call image data merged in the video merging step S130 to a wireless communication network. The processing operation of the video call transmission processing step S140 may be configured in the same manner as the video call processing operation of the conventional video call apparatus.

On the other hand, after the video call transmission processing step (S140), the caller returns to the caller video signal generating step (S100) step and the external video input step (S110) and continues to perform the video call.

5A and 5B are conceptual views illustrating an operation of an external video synthesis assisted video call apparatus according to the present invention.

5A is a conceptual diagram illustrating a screen of a first caller side of an external video synthesis supporting video call apparatus according to the present invention.

Referring to FIG. 5A, there is illustrated a first caller side screen 500 when the external video synthesis supporting video call apparatus according to the present invention is a mobile communication terminal supporting a video call. On the first caller side screen 500, a predetermined picture 502 extracted by the second caller according to the method of operating the external video synthesis supporting video call device and the appearance of the second caller 501 are synthesized. .

5B is a conceptual diagram illustrating a screen of a second caller side of an external video synthesis supporting video call apparatus according to the present invention.

Referring to FIG. 5B, a second caller side screen 510 is illustrated when the external video synthesis supporting video call apparatus according to the present invention is a mobile communication terminal supporting a video call. On the second caller side screen 510, a predetermined picture 512 extracted by the first caller according to the operation method of the external video synthesis supporting video call device is combined with the appearance 511 of the second caller.

Although described with reference to the embodiments above, those skilled in the art will understand that the present invention can be variously modified and changed without departing from the spirit and scope of the invention as set forth in the claims below. Could be.

1 is a block diagram of an external video synthesis support video call apparatus according to the present invention.

2 is a front view of a mobile communication terminal supporting a video call as an embodiment of an external video synthesis supporting video call apparatus according to the present invention.

3 is a rear view of a mobile communication terminal supporting a video call as an embodiment of an external video synthesis supporting video call apparatus according to the present invention.

4 is a flowchart illustrating a method of operating an external video synthesis assisted video call device according to the present invention.

5A is a conceptual diagram illustrating a screen of a first caller side of an external video synthesis supporting video call apparatus according to the present invention.

5B is a conceptual diagram illustrating a screen of a second caller side of an external video synthesis supporting video call apparatus according to the present invention.

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

110: caller video signal generation unit 111: first camera

120: external image input unit 121: second camera

130: external image extractor 140: image merger

150: video call transmission processor

Claims (14)

A caller video signal generation unit including a first camera and generating a caller video signal by photographing the caller through the first camera; An external image input unit including a second camera and receiving an external video or photo from the second camera; An external image extracting unit for extracting necessary pictures or characters from a video or a picture inputted from the external image input unit; An image merging unit for merging picture or / and letters extracted from the external image extracting unit with the caller video signal inputted from the caller video signal generating unit to generate video call image data; And a video call transmission processor for transmitting the video call image data and the caller's voice data together. The method of claim 1, And the external image extracting unit extracts the necessary pictures or characters from the external video or photo inputted from the external image input unit by applying transparency other than the necessary pictures or characters. The method of claim 2, And the external image extracting unit extracts a necessary picture or character by removing a background color from an external video or photo received from the external image input unit. The method of claim 1, The image merging unit merges the picture or / and letters extracted from the external image extracting unit with the caller image signal input from the caller image signal generating unit to generate the video call image data. Composite support video call device. The method of claim 2, The video merging unit merges the separate data divided by the strokes of pictures or / and letters extracted from the external image extracting unit and the caller video signal input from the caller video signal generating unit into integrated data form to make the video call image. External video synthesis support video call device characterized in that to generate data. The method of claim 1, The external video synthesis support video call device is an external video synthesis support video call device, characterized in that the mobile communication terminal supporting the video call. The method of claim 1, The external video synthesizing support video call device is an external video synthesizing support video call device. The method of claim 1, The external video synthesizing support video call device is an external video synthesizing support video call device, characterized in that the wired video call terminal. The method of claim 1, The external video synthesis support video call device is a computer device that supports video chat. A caller video signal generating step of photographing a caller through a first camera to generate a caller video signal; An external image input step of receiving an external video or photo from a second camera; An external image extraction step of extracting necessary pictures and / or letters from the video or photo received from the external image input step; A video merging step of merging the picture or / and letters extracted in the external video extraction step with the caller video signal inputted from the caller video signal generating step to generate video call video data; And a video call transmission processing step of transmitting the video call video data and the caller's voice data together. The method of claim 10, The extracting of the external image may include extracting necessary pictures or characters by imposing transparency other than the necessary pictures or characters from the videos or photos inputted from the external image input step. How it works. The method of claim 11, The extracting of the external image may include removing a background color of the external video or photo received in the external image input step, and extracting a necessary picture or character. The method of claim 10, In the video merging step, the video call image data is generated by merging the picture or / and letters output in the external video extraction step and the video signal of the caller generated in the caller video signal generation step in the form of an image. Operation method of external video synthesis supporting video call device. The method of claim 13, The image merging step may be performed by merging separate data separated by a stroke of a picture or character and extracted through the external image extraction step and a caller video signal generated in the caller video signal generation step into an integrated data form. A method for operating an external video synthesis assisting video call device, characterized in that for generating video data for a call.
KR1020070099038A 2007-10-02 2007-10-02 Video call device supporting outside image composition and operating method of the same KR20090033952A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103391471A (en) * 2013-08-09 2013-11-13 河南工业职业技术学院 Digital television terminal as well as digital television video synthesizing system and method
US9398251B2 (en) 2011-04-19 2016-07-19 Samsung Electronics Co., Ltd Apparatus and method for compositing image in a portable terminal

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9398251B2 (en) 2011-04-19 2016-07-19 Samsung Electronics Co., Ltd Apparatus and method for compositing image in a portable terminal
US9792883B2 (en) 2011-04-19 2017-10-17 Samsung Electronics Co., Ltd Apparatus and method for compositing image in a portable terminal
US10482849B2 (en) 2011-04-19 2019-11-19 Samsung Electronics Co., Ltd Apparatus and method for compositing image in a portable terminal
CN103391471A (en) * 2013-08-09 2013-11-13 河南工业职业技术学院 Digital television terminal as well as digital television video synthesizing system and method

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