WO2024101751A1 - Hologram printing method using real-time hologram printing data transmission - Google Patents

Hologram printing method using real-time hologram printing data transmission Download PDF

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WO2024101751A1
WO2024101751A1 PCT/KR2023/017113 KR2023017113W WO2024101751A1 WO 2024101751 A1 WO2024101751 A1 WO 2024101751A1 KR 2023017113 W KR2023017113 W KR 2023017113W WO 2024101751 A1 WO2024101751 A1 WO 2024101751A1
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hologram
printing
real
computer
time
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PCT/KR2023/017113
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French (fr)
Korean (ko)
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홍성희
김영민
홍지수
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한국전자기술연구원
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/04—Processes or apparatus for producing holograms
    • G03H1/0476—Holographic printer
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/04—Processes or apparatus for producing holograms
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/22—Processes or apparatus for obtaining an optical image from holograms
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T15/00—3D [Three Dimensional] image rendering
    • G06T15/10—Geometric effects

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  • the present invention relates to hologram printing technology, and more specifically, to a method of generating hologram printing data on a computer and printing it on a hologram printer.
  • Figure 1 is a diagram showing the hologram printing process.
  • the rendering computer must first render multiple viewpoint images using a virtual camera for the 3D image.
  • the number of viewpoint images that must be rendered to create a hologram is typically tens of thousands, and accordingly, as shown in FIG. 2, the total capacity of the viewpoint images is very large, approaching hundreds of gigabytes. Accordingly, it takes a very long time to complete rendering for all viewpoint images.
  • the generated viewpoint images must be transferred from the rendering computer to the printing computer connected to the hologram printer.
  • the capacity is very large, it is virtually impossible to transmit them over the network, and there is the inconvenience of having to transfer them via removable storage media.
  • the present invention was created to solve the above problems, and the purpose of the present invention is to reduce the time required for hologram printing and to more conveniently transmit hologram printing data to the printer through a network, providing real-time hologram printing data. To provide a hologram printing method by creation and transmission.
  • a real-time hologram printing method for achieving the above object includes the steps of rendering, by a rendering computer, viewpoint images for a 3D image to be generated as a hologram one by one; A rendering computer transmitting a rendered viewpoint image to a printing computer in real time; A printing computer transmitting a viewpoint image to a hologram printer in real time; It includes a step where the hologram printer restores the transmitted viewpoint image into a hologram and prints it on a holographic medium in real time.
  • the transmission step may be transmitting the rendered viewpoint image to the printing computer in real-time streaming.
  • the viewpoint image may be transmitted to the printing computer.
  • the printing computer When the printing computer receives a printing completion response for the previous viewpoint image from the hologram printer, it can request the next viewpoint image from the rendering computer.
  • the rendering step may involve rendering viewpoint images according to a set order.
  • the printing step may be to perform printing according to the rendering order in the rendering step.
  • the determined order may be expressed as a path for sequentially processing viewpoint images in a 3D image.
  • the determined order may be selectable.
  • Perspective images may be images created by rendering each of the areas created when a 3D image is divided into a grid shape with a virtual camera.
  • a rendering computer that renders viewpoint images for a 3D image to be created as a hologram one by one and transmits the rendered viewpoint images to a printing computer in real time;
  • a printing computer that transmits the viewpoint image received from the rendering computer to the hologram printer in real time;
  • a real-time hologram printing system comprising a hologram printer that restores a viewpoint image transmitted from a printing computer into a hologram and prints it in real time on a holographic medium.
  • the time required for hologram printing can be dramatically reduced by rendering the viewpoint images, which are hologram printing data, one by one in real time, and easily providing the viewpoint images through a network. It can be transmitted to the printer.
  • FIG. 1 is a diagram showing a conventional hologram printing process
  • Figure 2 is a diagram showing problems with the conventional hologram printing process
  • Figure 3 is a diagram showing the configuration of a real-time hologram printing system according to an embodiment of the present invention
  • Figure 4 is a diagram provided to explain the viewpoint image rendering method
  • FIG. 5 is a flowchart provided to explain a real-time hologram printing method according to another embodiment of the present invention.
  • Figure 7 is an example of the rendering and printing process according to the selected rendering order.
  • An embodiment of the present invention presents a real-time hologram printing method.
  • This technology generates hologram printing data in real time and transmits it to the printer in real time, reducing the time required for hologram printing and easily transmitting hologram printing data to the printer through the network.
  • the rendering order can be set in various ways, but the printing order is operated according to the rendering order.
  • Figure 3 is a diagram showing the configuration of a real-time hologram printing system according to an embodiment of the present invention.
  • the real-time hologram printing system according to an embodiment of the present invention includes a rendering computer 110, a printing computer 120, and a hologram printer 130.
  • the rendering computer 110 renders viewpoint images one by one for the 3D image to be created as a hologram.
  • viewpoint images are images created by rendering each of the areas created when a 3D image is divided into a grid shape with a virtual camera.
  • Viewpoint image rendering is different from the existing method of rendering all viewpoint images ( Figure 2) in that it is performed one by one as shown in FIG. 4.
  • the rendering computer 110 transmits the rendered viewpoint images one by one to the printing computer 120 in real time.
  • Perspective image transmission by the rendering computer 110 is performed in real-time streaming.
  • the printing computer 120 converts the viewpoint image data received from the rendering computer 110 into data in a format that can be processed by the hologram printer 130 and transmits it to the hologram printer 130 in real time.
  • the hologram printer 130 restores the viewpoint image transmitted from the printing computer 120 into a hologram and prints it on a holographic medium in real time.
  • FIG. 5 is a flowchart provided to explain a real-time hologram printing method according to another embodiment of the present invention.
  • the rendering computer 110 renders only one viewpoint image in order for the 3D image to be created as a hologram (S210), and transmits the viewpoint image rendered in step S210 to the printing computer 120 in real time (S220).
  • viewpoint images are images created by rendering each of the areas created when a 3D image is divided into a grid shape with a virtual camera. In holograms, this is also referred to as hogel.
  • Rendering of the viewpoint image in step S210 and transmission of the viewpoint image in step S220 are performed on the premise that there is a request for transmission of the viewpoint image from the printing computer 120.
  • the printing computer 120 requests the rendering computer 120 for the next viewpoint image.
  • the printing computer 120 converts the viewpoint image data received in step S220 into data in a format that can be processed by the hologram printer 130, and transmits it to the hologram printer 130 in real time (S230).
  • the hologram printer 130 restores the viewpoint image transmitted in step S230 into a hologram and prints it on a holographic medium in real time (S240).
  • Steps S210 to S240 are repeated in units of viewpoint images until printing is completed for all viewpoint images for the 3D image (S250).
  • the hologram printer 130 transmits a completion response to the printing computer 120, and the printing computer 120, which has received the completion response from the hologram printer 130, sends a completion response to the rendering computer 110. Repeat requesting the next viewpoint image.
  • step S210 the viewpoint images are rendered according to a set order.
  • Figure 6 illustrates the rendering order. As shown, the rendering order represents a path that sequentially processes viewpoint images in a 3D image.
  • step S240 of FIG. 5 printing must be performed according to the rendering order in step S210.
  • the rendering and printing process according to the rendering order presented in the 6th (2nd row, 2nd) of the rendering orders shown in FIG. 6 is shown in FIG. 7.
  • the left side of Figure 7 shows the rendering process
  • the right side of Figure 7 shows the printing process, and it can be seen that the order of the two processes matches.
  • the rendering order can be selected by the user. That is, the user can select one of the rendering orders shown in FIG. 6 or create and select another rendering order.
  • the rendering order can be automatically selected according to the characteristics of the 3D image.
  • Characteristics of 3D images considered may include image type (people image, background image, etc.), image brightness, image complexity, etc.
  • the viewpoint images which are hologram printing data, one by one in real time and transmitting them one by one
  • the time required for hologram printing can be dramatically reduced, and the viewpoint images can be easily transmitted to the printer through the network.
  • point-of-view image data When point-of-view image data is transmitted in real-time streaming, point-of-view image creation, point-of-view image transmission, and hologram printing occur simultaneously in real time, thereby reducing the time required for existing hologram printing and creating holograms that require more data. It can also be produced quickly.
  • various rendering orders are used, allowing the user to select the desired order. Furthermore, the rendering order can be automatically selected according to the characteristics of the 3D image, thereby improving processing speed along with holographic realism.
  • a computer-readable recording medium can be any data storage device that can be read by a computer and store data.
  • computer-readable recording media can be ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical disk, hard disk drive, etc.
  • computer-readable codes or programs stored on a computer-readable recording medium may be transmitted through a network connected between computers.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
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  • Computer Graphics (AREA)
  • Theoretical Computer Science (AREA)
  • Holo Graphy (AREA)

Abstract

A hologram printing method using real-time hologram printing data transmission is provided. In the real-time hologram printing method according to an embodiment of the present invention, when a rendering computer renders, one by one, viewpoint images for 3D images to be generated as holograms and transmits same to the printing computer in real time, a printing computer transmits the viewpoint images to a hologram printer in real time so that the hologram printer restores the transmitted viewpoint images as holograms, thereby printing same in a holographic medium in real time. Therefore, hologram printing time can be remarkably reduced and viewpoint images can be conveniently transmitted to a printer through a network.

Description

실시간 홀로그램 프린팅 데이터 전송에 의한 홀로그램 프린팅 방법Hologram printing method by transmitting real-time hologram printing data
본 발명은 홀로그램 프린팅 기술에 관한 것으로, 더욱 상세하게는 컴퓨터에서 홀로그램 프린팅 데이터를 생성하고, 이를 홀로그램 프린터에서 프린팅하는 방법에 관한 것이다.The present invention relates to hologram printing technology, and more specifically, to a method of generating hologram printing data on a computer and printing it on a hologram printer.
도 1은 홀로그램 프린팅 과정을 나타낸 도면이다. 홀로그램 프린팅을 위해서는, 도시된 바와 같이 먼저 렌더링 컴퓨터가 3D 영상에 대해 가상 카메라로 다수의 시점영상들을 렌더링하여야 한다.Figure 1 is a diagram showing the hologram printing process. For hologram printing, as shown, the rendering computer must first render multiple viewpoint images using a virtual camera for the 3D image.
홀로그램 생성을 위해 렌더링해야 하는 시점영상들은 통상적으로 수 만장이며, 이에 따라 도 2에 나타낸 바와 같이 시점영상들은 전체 용량이 수 백기가에 육박하는 등 매우 방대하다. 이에 따라 전체 시점영상들 모두에 대해 렌더링이 완료되기까지는 매우 긴 시간이 소요된다.The number of viewpoint images that must be rendered to create a hologram is typically tens of thousands, and accordingly, as shown in FIG. 2, the total capacity of the viewpoint images is very large, approaching hundreds of gigabytes. Accordingly, it takes a very long time to complete rendering for all viewpoint images.
다음 생성된 시점영상들을 렌더링 컴퓨터에서 홀로그램 프린터에 연결된 프린팅 컴퓨터로 옮겨야 하는데, 용량이 매우 큰 관계로 네트워크를 통해 전송하는 것은 사실상 불가능하며, 이동식 저장매체를 통해 옮겨야 하는 불편이 있다.Next, the generated viewpoint images must be transferred from the rendering computer to the printing computer connected to the hologram printer. However, since the capacity is very large, it is virtually impossible to transmit them over the network, and there is the inconvenience of having to transfer them via removable storage media.
본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로서, 본 발명의 목적은, 홀로그램 프린팅에 소요되는 시간을 줄이고 홀로그램 프린팅 데이터를 네트워크를 통해 보다 간편하게 프린터 측으로 전달하기 위한 방안으로, 실시간 홀로그램 프린팅 데이터 생성 및 전송에 의한 홀로그램 프린팅 방법을 제공함에 있다.The present invention was created to solve the above problems, and the purpose of the present invention is to reduce the time required for hologram printing and to more conveniently transmit hologram printing data to the printer through a network, providing real-time hologram printing data. To provide a hologram printing method by creation and transmission.
상기 목적을 달성하기 위한 본 발명의 일 실시예에 따른 실시간 홀로그램 프린팅 방법은 렌더링 컴퓨터가, 홀로그램으로 생성할 3D 영상에 대한 시점영상을 하나씩 렌더링하는 단계; 렌더링 컴퓨터가, 렌더링되는 시점영상을 실시간으로 프린팅 컴퓨터에 전송하는 단계; 프린팅 컴퓨터가, 시점영상을 실시간으로 홀로그램 프린터에 전달하는 단계; 홀로그램 프린터가, 전달되는 시점영상을 홀로그램으로 복원하여 홀로그래픽 매질에 실시간으로 프린팅하는 단계;를 포함한다. A real-time hologram printing method according to an embodiment of the present invention for achieving the above object includes the steps of rendering, by a rendering computer, viewpoint images for a 3D image to be generated as a hologram one by one; A rendering computer transmitting a rendered viewpoint image to a printing computer in real time; A printing computer transmitting a viewpoint image to a hologram printer in real time; It includes a step where the hologram printer restores the transmitted viewpoint image into a hologram and prints it on a holographic medium in real time.
전송 단계는, 렌더링되는 시점영상을 실시간 스트리밍 방식으로 프린팅 컴퓨터로 전송하는 것일 수 있다.The transmission step may be transmitting the rendered viewpoint image to the printing computer in real-time streaming.
전송 단계는, 프린팅 컴퓨터로부터 다음 시점영상에 대한 요청이 있으면, 시점영상을 프린팅 컴퓨터로 전송하는 것일 수 있다.In the transmission step, if there is a request for the next viewpoint image from the printing computer, the viewpoint image may be transmitted to the printing computer.
프린팅 컴퓨터는, 홀로그램 프린터로부터 이전 시점영상에 대한 프린팅 완료 응답을 수신하면, 렌더링 컴퓨터에 다음 시점영상을 요청할 수 있다. When the printing computer receives a printing completion response for the previous viewpoint image from the hologram printer, it can request the next viewpoint image from the rendering computer.
렌더링 단계는, 시점영상들에 대한 정해진 순서에 따라 렌더링을 수행하는 것일 수 있다.The rendering step may involve rendering viewpoint images according to a set order.
프린팅 단계는, 렌더링 단계에서의 렌더링 순서에 맞게 프린팅을 수행하는 것일 수 있다.The printing step may be to perform printing according to the rendering order in the rendering step.
정해진 순서는, 3D 영상에서 시점영상을 순차적으로 처리하는 경로로 나타내는 것일 수 있다.The determined order may be expressed as a path for sequentially processing viewpoint images in a 3D image.
정해진 순서는, 선택 가능한 것일 수 있다.The determined order may be selectable.
시점영상들은, 3D 영상을 그리드 형태로 구획하였을때 생성되는 영역들 각각을 가상 카메라로 렌더링하여 생성되는 영상들일 수 있다.Perspective images may be images created by rendering each of the areas created when a 3D image is divided into a grid shape with a virtual camera.
본 발명의 다른 측면에 따르면, 홀로그램으로 생성할 3D 영상에 대한 시점영상을 하나씩 렌더링하고, 렌더링되는 시점영상을 실시간으로 프린팅 컴퓨터에 전송하는 렌더링 컴퓨터; 렌더링 컴퓨터로부터 수신되는 시점영상을 실시간으로 홀로그램 프린터에 전달하는 프린팅 컴퓨터; 프린팅 컴퓨터로부터 전달되는 시점영상을 홀로그램으로 복원하여 홀로그래픽 매질에 실시간으로 프린팅하는 홀로그램 프린터;를 포함하는 것을 특징으로 하는 실시간 홀로그램 프린팅 시스템이 제공된다.According to another aspect of the present invention, a rendering computer that renders viewpoint images for a 3D image to be created as a hologram one by one and transmits the rendered viewpoint images to a printing computer in real time; A printing computer that transmits the viewpoint image received from the rendering computer to the hologram printer in real time; A real-time hologram printing system is provided, comprising a hologram printer that restores a viewpoint image transmitted from a printing computer into a hologram and prints it in real time on a holographic medium.
이상 설명한 바와 같이, 본 발명의 실시예들에 따르면, 홀로그램 프린팅 데이터인 시점영상들을 실시간으로 하나씩 렌더링하면서 하나씩 전송함으로써, 홀로그램 프린팅에 소요되는 시간을 획기적으로 줄일 수 있고, 시정영상들을 네트워크를 통해 간편하게 프린터 측으로 전달할 수 있게 된다.As described above, according to the embodiments of the present invention, the time required for hologram printing can be dramatically reduced by rendering the viewpoint images, which are hologram printing data, one by one in real time, and easily providing the viewpoint images through a network. It can be transmitted to the printer.
도 1은 종래 홀로그램 프린팅 과정을 나타낸 도면,1 is a diagram showing a conventional hologram printing process;
도 2는 종래 홀로그램 프린팅 과정의 문제점을 나타낸 도면,Figure 2 is a diagram showing problems with the conventional hologram printing process;
도 3은 본 발명의 일 실시예에 따른 실시간 홀로그램 프린팅 시스템의 구성을 도시한 도면,Figure 3 is a diagram showing the configuration of a real-time hologram printing system according to an embodiment of the present invention;
도 4는 시점영상 렌더링 방식의 설명에 제공되는 도면,Figure 4 is a diagram provided to explain the viewpoint image rendering method;
도 5는 본 발명의 다른 실시예에 따른 실시간 홀로그램 프린팅 방법의 설명에 제공되는 흐름도,5 is a flowchart provided to explain a real-time hologram printing method according to another embodiment of the present invention;
도 6은 렌더링 순서 예시들, 그리고,6 shows examples of rendering order, and
도 7은 선택된 렌더링 순서에 따른 렌더링과 프린팅 과정 예시이다.Figure 7 is an example of the rendering and printing process according to the selected rendering order.
이하에서는 도면을 참조하여 본 발명을 보다 상세하게 설명한다.Hereinafter, the present invention will be described in more detail with reference to the drawings.
본 발명의 실시예에서는 실시간 홀로그램 프린팅 방법을 제시한다. 홀로그램 프린팅 데이터를 실시간으로 생성하고 실시간으로 프린터에 전송하여, 홀로그램 프린팅에 소요되는 시간을 줄이고, 네트워크를 통해 간편하게 홀로그램 프린팅 데이터를 프린터 측으로 전송하는 기술이다.An embodiment of the present invention presents a real-time hologram printing method. This technology generates hologram printing data in real time and transmits it to the printer in real time, reducing the time required for hologram printing and easily transmitting hologram printing data to the printer through the network.
나아가 본 발명의 실시예에서는 렌더링 순서를 다양하게 설정할 수 있도록 하되, 프린팅 순서를 렌더링 순서에 맞게 운용한다.Furthermore, in the embodiment of the present invention, the rendering order can be set in various ways, but the printing order is operated according to the rendering order.
도 3은 본 발명의 일 실시예에 따른 실시간 홀로그램 프린팅 시스템의 구성을 도시한 도면이다. 본 발명의 실시예에 따른 실시간 홀로그램 프린팅 시스템은 도시된 바와 같이, 렌더링 컴퓨터(110), 프린팅 컴퓨터(120) 및 홀로그램 프린터(130)를 포함하여 구성된다.Figure 3 is a diagram showing the configuration of a real-time hologram printing system according to an embodiment of the present invention. As shown, the real-time hologram printing system according to an embodiment of the present invention includes a rendering computer 110, a printing computer 120, and a hologram printer 130.
렌더링 컴퓨터(110)는 홀로그램으로 생성할 3D 영상에 대해 시점영상들을 하나씩 렌더링 한다. 시점영상들은 도 4에 도시된 바와 같이 3D 영상을 그리드 형태로 구획하였을때 생성되는 영역들 각각을 가상 카메라로 렌더링하여 생성되는 영상들이다. 시점영상 렌더링은 도 4에 도시된 바와 같이 하나씩 수행된다는 점에서, 모든 시점영상들을 렌더링하는 기존 방식(도 2)과 차이가 있다.The rendering computer 110 renders viewpoint images one by one for the 3D image to be created as a hologram. As shown in FIG. 4, viewpoint images are images created by rendering each of the areas created when a 3D image is divided into a grid shape with a virtual camera. Viewpoint image rendering is different from the existing method of rendering all viewpoint images (Figure 2) in that it is performed one by one as shown in FIG. 4.
렌더링 컴퓨터(110)는 렌더링되는 시점영상들을 프린팅 컴퓨터(120)로 하나씩 실시간으로 전송한다. 렌더링 컴퓨터(110)에 의한 시점영상 전송은 실시간 스트리밍 방식으로 수행된다.The rendering computer 110 transmits the rendered viewpoint images one by one to the printing computer 120 in real time. Perspective image transmission by the rendering computer 110 is performed in real-time streaming.
프린팅 컴퓨터(120)는 렌더링 컴퓨터(110)로부터 수신한 시점영상 데이터를 홀로그램 프린터(130)에서 처리할 수 있는 형식의 데이터로 변환하여, 실시간으로 홀로그램 프린터(130)에 전달한다.The printing computer 120 converts the viewpoint image data received from the rendering computer 110 into data in a format that can be processed by the hologram printer 130 and transmits it to the hologram printer 130 in real time.
홀로그램 프린터(130)는 프린팅 컴퓨터(120)로부터 전달되는 시점영상을 홀로그램으로 복원하여 홀로그래픽 매질에 실시간으로 프린팅한다.The hologram printer 130 restores the viewpoint image transmitted from the printing computer 120 into a hologram and prints it on a holographic medium in real time.
도 3에 도시된 시스템에 의해 홀로그램 프린팅이 수행되는 과정에 대해, 이하에서 도 5를 참조하여 상세히 설명한다. 도 5는 본 발명의 다른 실시예에 따른 실시간 홀로그램 프린팅 방법의 설명에 제공되는 흐름도이다.The process in which hologram printing is performed by the system shown in FIG. 3 will be described in detail below with reference to FIG. 5. Figure 5 is a flowchart provided to explain a real-time hologram printing method according to another embodiment of the present invention.
먼저 렌더링 컴퓨터(110)는 홀로그램으로 생성할 3D 영상에 대해 시점영상을 순서에 따라 하나만 렌더링하고(S210), S210단계에서 렌더링되는 시점영상을 프린팅 컴퓨터(120)에 실시간으로 전송한다(S220).First, the rendering computer 110 renders only one viewpoint image in order for the 3D image to be created as a hologram (S210), and transmits the viewpoint image rendered in step S210 to the printing computer 120 in real time (S220).
시점영상들은 전술한 바와 같이 3D 영상을 그리드 형태로 구획하였을때 생성되는 영역들 각각을 가상 카메라로 렌더링하여 생성되는 영상들이다. 홀로그램에서는 이를 호겔(hogel)로 지칭하기도 한다.As described above, viewpoint images are images created by rendering each of the areas created when a 3D image is divided into a grid shape with a virtual camera. In holograms, this is also referred to as hogel.
한편 S210단계에서의 시점영상 렌더링 순서에 대해서는 도 6을 참조하면서 상세히 후술한다. S220단계에서의 시점영상 전송은 실시간 스트리밍 방식으로 수행된다.Meanwhile, the viewpoint image rendering sequence in step S210 will be described in detail later with reference to FIG. 6. Transmission of the viewpoint image in step S220 is performed in real-time streaming.
S210단계에서의 시점영상 렌더링과 S220단계에서의 시점영상 전송은, 프린팅 컴퓨터(120)로부터 시점영상 전송 요청이 있는 것을 전제로 수행된다. 프린팅 컴퓨터(120)는 홀로그램 프린터(130)가 이전 시점영상에 대한 프린팅을 완료하면 렌터링 컴퓨터(120)에 다음 시점영상을 요청한다.Rendering of the viewpoint image in step S210 and transmission of the viewpoint image in step S220 are performed on the premise that there is a request for transmission of the viewpoint image from the printing computer 120. When the hologram printer 130 completes printing the previous viewpoint image, the printing computer 120 requests the rendering computer 120 for the next viewpoint image.
프린팅 컴퓨터(120)는 S220단계에서 수신되는 시점영상 데이터를 홀로그램 프린터(130)에서 처리할 수 있는 형식의 데이터로 변환하여, 실시간으로 홀로그램 프린터(130)에 전달한다(S230).The printing computer 120 converts the viewpoint image data received in step S220 into data in a format that can be processed by the hologram printer 130, and transmits it to the hologram printer 130 in real time (S230).
홀로그램 프린터(130)는 S230단계에서 전달되는 시점영상을 홀로그램으로 복원하여 홀로그래픽 매질에 실시간으로 프린팅한다(S240).The hologram printer 130 restores the viewpoint image transmitted in step S230 into a hologram and prints it on a holographic medium in real time (S240).
S210단계 내지 S240단계는 3D 영상에 대한 시점영상들 모두에 대해 프린팅이 완료될때까지 시점영상 단위로 반복된다(S250).Steps S210 to S240 are repeated in units of viewpoint images until printing is completed for all viewpoint images for the 3D image (S250).
이를 위해, 홀로그램 프린터(130)는 S240단계의 프린팅이 완료되면 프린팅 컴퓨터(120)에 완료 응답을 전송하고, 홀로그램 프린터(130)로부터 완료 응답을 수신한 프린팅 컴퓨터(120)는 렌더링 컴퓨터(110)에 다음 시점영상을 요청하는 것을 반복한다.To this end, when the printing in step S240 is completed, the hologram printer 130 transmits a completion response to the printing computer 120, and the printing computer 120, which has received the completion response from the hologram printer 130, sends a completion response to the rendering computer 110. Repeat requesting the next viewpoint image.
S210단계에서 시점영상은 정해진 순서에 따라 렌더링되다고 전술한 바 있다. 도 6에는 렌더링 순서를 예시하였다. 도시된 바와 같이 렌더링 순서는 3D 영상에서 시점영상을 순차적으로 처리하는 경로로 나타낸다.It has been described above that in step S210, the viewpoint images are rendered according to a set order. Figure 6 illustrates the rendering order. As shown, the rendering order represents a path that sequentially processes viewpoint images in a 3D image.
도 5의 S240단계에서는 S210단계에서의 렌더링 순서에 따라 프린팅을 수행하여야 한다. 도 6에 제시된 렌더링 순서 중 6 번째(2 번째 줄 2 번째)에 제시된 렌더링 순서에 따른 렌더링과 프린팅 과정을 도 7에 나타내었다. 도 7의 좌측에는 렌더링 과정을 나타내었고, 도 7의 우측에는 프린팅 과정을 나타내었는데, 두 과정에서의 순서는 일치하는 것을 확인할 수 있다.In step S240 of FIG. 5, printing must be performed according to the rendering order in step S210. The rendering and printing process according to the rendering order presented in the 6th (2nd row, 2nd) of the rendering orders shown in FIG. 6 is shown in FIG. 7. The left side of Figure 7 shows the rendering process, and the right side of Figure 7 shows the printing process, and it can be seen that the order of the two processes matches.
한편 렌더링 순서는 사용자가 선택할 수 있다. 즉 사용자는 도 6에 제시된 렌더링 순서 중 하나를 선택하거나 그 외의 다른 렌더링 순서를 생성하여 선택할 수 있다.Meanwhile, the rendering order can be selected by the user. That is, the user can select one of the rendering orders shown in FIG. 6 or create and select another rendering order.
나아가 렌더링 순서가 3D 영상의 특성에 따라 자동으로 선택되는 것으로 구현할 수도 있다. 고려되는 3D 영상의 특성에는 영상 종류(인물 영상, 배경 영상 등), 영상 밝기, 영상 복잡도 등이 포함될 수 있다.Furthermore, the rendering order can be automatically selected according to the characteristics of the 3D image. Characteristics of 3D images considered may include image type (people image, background image, etc.), image brightness, image complexity, etc.
지금까지 실시간 홀로그램 프린팅 데이터 전송에 의한 홀로그램 프린팅 방법에 대해 바람직한 실시예를 들어 상세히 설명하였다.So far, the hologram printing method using real-time hologram printing data transmission has been described in detail with preferred embodiments.
위 실시예에서는 홀로그램 프린팅 데이터인 시점영상들을 실시간으로 하나씩 렌더링하면서 하나씩 전송함으로써, 홀로그램 프린팅에 소요되는 시간을 획기적으로 줄일 수 있고, 시정영상들을 네트워크를 통해 간편하게 프린터 측으로 전달할 수 있도록 하였다.In the above embodiment, by rendering the viewpoint images, which are hologram printing data, one by one in real time and transmitting them one by one, the time required for hologram printing can be dramatically reduced, and the viewpoint images can be easily transmitted to the printer through the network.
시점영상 데이터를 실시간 스트리밍 방식으로 전송하게 되면, 시점영상 생성, 시점영상 전송, 홀로그램 프린팅이 실시간으로 동시에 이뤄지게 되므로, 기존의 홀로그램 프린팅에 소요되는 시간을 감소시킬 수 있고, 더 많은 데이터를 요구하는 홀로그램도 빠르게 제작할 수 있게 된다.When point-of-view image data is transmitted in real-time streaming, point-of-view image creation, point-of-view image transmission, and hologram printing occur simultaneously in real time, thereby reducing the time required for existing hologram printing and creating holograms that require more data. It can also be produced quickly.
또한 본 발명의 실시예에서는 렌더링 순서를 다양하게 운용하는데, 사용자가 원하는 순서를 선택할 수 있도록 하였다. 나아가 3D 영상의 특성에 따라 렌더링 순서가 자동으로 선택될 수 있도록 함으로써 홀로그램 실감도와 함께 처리 속도가 보다 향상되도록 하였다.Additionally, in the embodiment of the present invention, various rendering orders are used, allowing the user to select the desired order. Furthermore, the rendering order can be automatically selected according to the characteristics of the 3D image, thereby improving processing speed along with holographic realism.
한편, 본 실시예에 따른 장치와 방법의 기능을 수행하게 하는 컴퓨터 프로그램을 수록한 컴퓨터로 읽을 수 있는 기록매체에도 본 발명의 기술적 사상이 적용될 수 있음은 물론이다. 또한, 본 발명의 다양한 실시예에 따른 기술적 사상은 컴퓨터로 읽을 수 있는 기록매체에 기록된 컴퓨터로 읽을 수 있는 코드 형태로 구현될 수도 있다. 컴퓨터로 읽을 수 있는 기록매체는 컴퓨터에 의해 읽을 수 있고 데이터를 저장할 수 있는 어떤 데이터 저장 장치이더라도 가능하다. 예를 들어, 컴퓨터로 읽을 수 있는 기록매체는 ROM, RAM, CD-ROM, 자기 테이프, 플로피 디스크, 광디스크, 하드 디스크 드라이브, 등이 될 수 있음은 물론이다. 또한, 컴퓨터로 읽을 수 있는 기록매체에 저장된 컴퓨터로 읽을 수 있는 코드 또는 프로그램은 컴퓨터간에 연결된 네트워크를 통해 전송될 수도 있다.Meanwhile, of course, the technical idea of the present invention can be applied to a computer-readable recording medium containing a computer program that performs the functions of the device and method according to this embodiment. Additionally, the technical ideas according to various embodiments of the present invention may be implemented in the form of computer-readable code recorded on a computer-readable recording medium. A computer-readable recording medium can be any data storage device that can be read by a computer and store data. For example, of course, computer-readable recording media can be ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical disk, hard disk drive, etc. Additionally, computer-readable codes or programs stored on a computer-readable recording medium may be transmitted through a network connected between computers.
또한, 이상에서는 본 발명의 바람직한 실시예에 대하여 도시하고 설명하였지만, 본 발명은 상술한 특정의 실시예에 한정되지 아니하며, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술분야에서 통상의 지식을 가진자에 의해 다양한 변형실시가 가능한 것은 물론이고, 이러한 변형실시들은 본 발명의 기술적 사상이나 전망으로부터 개별적으로 이해되어져서는 안될 것이다.In addition, although preferred embodiments of the present invention have been shown and described above, the present invention is not limited to the specific embodiments described above, and the technical field to which the invention pertains without departing from the gist of the present invention as claimed in the claims. Of course, various modifications can be made by those skilled in the art, and these modifications should not be understood individually from the technical idea or perspective of the present invention.

Claims (10)

  1. 렌더링 컴퓨터가, 홀로그램으로 생성할 3D 영상에 대한 시점영상을 하나씩 렌더링하는 단계;Rendering, by a rendering computer, one by one the viewpoint images for the 3D image to be generated as a hologram;
    렌더링 컴퓨터가, 렌더링되는 시점영상을 실시간으로 프린팅 컴퓨터에 전송하는 단계;A rendering computer transmitting a rendered viewpoint image to a printing computer in real time;
    프린팅 컴퓨터가, 시점영상을 실시간으로 홀로그램 프린터에 전달하는 단계;A printing computer transmitting a viewpoint image to a hologram printer in real time;
    홀로그램 프린터가, 전달되는 시점영상을 홀로그램으로 복원하여 홀로그래픽 매질에 실시간으로 프린팅하는 단계;를 포함하는 것을 특징으로 하는 실시간 홀로그램 프린팅 방법.A real-time hologram printing method comprising: a hologram printer restoring a transmitted viewpoint image into a hologram and printing it in real time on a holographic medium.
  2. 청구항 1에 있어서,In claim 1,
    전송 단계는,The transfer step is,
    렌더링되는 시점영상을 실시간 스트리밍 방식으로 프린팅 컴퓨터로 전송하는 것을 특징으로 하는 실시간 홀로그램 프린팅 방법.A real-time hologram printing method characterized by transmitting the rendered viewpoint image to a printing computer in real-time streaming.
  3. 청구항 2에 있어서,In claim 2,
    전송 단계는,The transfer step is,
    프린팅 컴퓨터로부터 다음 시점영상에 대한 요청이 있으면, 시점영상을 프린팅 컴퓨터로 전송하는 것을 특징으로 하는 실시간 홀로그램 프린팅 방법.A real-time hologram printing method characterized in that when there is a request for the next viewpoint image from the printing computer, the viewpoint image is transmitted to the printing computer.
  4. 청구항 3에 있어서,In claim 3,
    프린팅 컴퓨터는,The printing computer is
    홀로그램 프린터로부터 이전 시점영상에 대한 프린팅 완료 응답을 수신하면, 렌더링 컴퓨터에 다음 시점영상을 요청하는 것을 특징으로 하는 실시간 홀로그램 프린팅 방법.A real-time hologram printing method comprising requesting a next viewpoint image from a rendering computer upon receiving a printing completion response for the previous viewpoint image from the hologram printer.
  5. 청구항 1에 있어서,In claim 1,
    렌더링 단계는,The rendering stage is,
    시점영상들에 대한 정해진 순서에 따라 렌더링을 수행하는 것을 특징으로 하는 실시간 홀로그램 프린팅 방법.A real-time hologram printing method characterized by performing rendering according to a set order for viewpoint images.
  6. 청구항 5에 있어서,In claim 5,
    프린팅 단계는,The printing step is,
    렌더링 단계에서의 렌더링 순서에 맞게 프린팅을 수행하는 것을 특징으로 하는 실시간 홀로그램 프린팅 방법.A real-time hologram printing method characterized in that printing is performed according to the rendering order in the rendering stage.
  7. 청구항 6에 있어서,In claim 6,
    정해진 순서는,The established order is,
    3D 영상에서 시점영상을 순차적으로 처리하는 경로로 나타내는 것을 특징으로 하는 실시간 홀로그램 프린팅 방법.A real-time hologram printing method characterized by representing viewpoint images in a 3D image as a sequentially processing path.
  8. 청구항 7에 있어서,In claim 7,
    정해진 순서는,The established order is,
    선택 가능한 것을 특징으로 하는 실시간 홀로그램 프린팅 방법.A real-time hologram printing method characterized by selectable features.
  9. 청구항 1에 있어서,In claim 1,
    시점영상들은,Point of view videos,
    3D 영상을 그리드 형태로 구획하였을때 생성되는 영역들 각각을 가상 카메라로 렌더링하여 생성되는 영상들인 것을 특징으로 하는 실시간 홀로그램 프린팅 방법.A real-time hologram printing method characterized in that the images are generated by rendering each of the areas created when the 3D image is divided into a grid shape with a virtual camera.
  10. 홀로그램으로 생성할 3D 영상에 대한 시점영상을 하나씩 렌더링하고, 렌더링되는 시점영상을 실시간으로 프린팅 컴퓨터에 전송하는 렌더링 컴퓨터;A rendering computer that renders the viewpoint images for the 3D image to be created as a hologram one by one and transmits the rendered viewpoint images to the printing computer in real time;
    렌더링 컴퓨터로부터 수신되는 시점영상을 실시간으로 홀로그램 프린터에 전달하는 프린팅 컴퓨터;A printing computer that transmits the viewpoint image received from the rendering computer to the hologram printer in real time;
    프린팅 컴퓨터로부터 전달되는 시점영상을 홀로그램으로 복원하여 홀로그래픽 매질에 실시간으로 프린팅하는 홀로그램 프린터;를 포함하는 것을 특징으로 하는 실시간 홀로그램 프린팅 시스템.A real-time hologram printing system comprising a hologram printer that restores the viewpoint image transmitted from the printing computer into a hologram and prints it in real time on a holographic medium.
PCT/KR2023/017113 2022-11-11 2023-10-31 Hologram printing method using real-time hologram printing data transmission WO2024101751A1 (en)

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Citations (5)

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KR20140064155A (en) * 2012-11-19 2014-05-28 전자부품연구원 Holographic printer for filtering holographic fringe pattern and recording that on holographic recording medium by the hogel and holographic printing method thereof
KR20160017489A (en) * 2014-08-06 2016-02-16 삼성전자주식회사 Method and apparatus for generating hologram
JP2018180261A (en) * 2017-04-12 2018-11-15 国立研究開発法人情報通信研究機構 Hologram generating device, hologram generating program and holographic projection system
KR20220077449A (en) * 2020-12-02 2022-06-09 한국전자기술연구원 Holographic printing content generation method using streaming scheme
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KR20160017489A (en) * 2014-08-06 2016-02-16 삼성전자주식회사 Method and apparatus for generating hologram
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