CN113763246A - Museum exhibition screen holographic projection display method - Google Patents

Museum exhibition screen holographic projection display method Download PDF

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Publication number
CN113763246A
CN113763246A CN202110980187.6A CN202110980187A CN113763246A CN 113763246 A CN113763246 A CN 113763246A CN 202110980187 A CN202110980187 A CN 202110980187A CN 113763246 A CN113763246 A CN 113763246A
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China
Prior art keywords
screen
cultural
display method
projection display
holographic projection
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CN202110980187.6A
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Inventor
柴秋霞
郭振
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Fudan University
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Fudan University
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T3/00Geometric image transformations in the plane of the image
    • G06T3/40Scaling of whole images or parts thereof, e.g. expanding or contracting
    • G06T3/4038Image mosaicing, e.g. composing plane images from plane sub-images
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03HHOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/22Processes or apparatus for obtaining an optical image from holograms
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03HHOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/22Processes or apparatus for obtaining an optical image from holograms
    • G03H1/2202Reconstruction geometries or arrangements
    • G03H1/2205Reconstruction geometries or arrangements using downstream optical component
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T11/002D [Two Dimensional] image generation
    • G06T11/40Filling a planar surface by adding surface attributes, e.g. colour or texture
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03HHOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/22Processes or apparatus for obtaining an optical image from holograms
    • G03H1/2202Reconstruction geometries or arrangements
    • G03H1/2205Reconstruction geometries or arrangements using downstream optical component
    • G03H2001/2213Diffusing screen revealing the real holobject, e.g. container filed with gel to reveal the 3D holobject

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Abstract

The invention relates to a holographic projection display method of a yarn screen for exhibition of a museum, which specifically comprises the following steps: s1: scanning the cultural relics, and processing, restoring and creating to obtain a new cultural relic image; s2: the cultural relic image is subjected to dynamic manufacturing, special effect processing and sound processing in sequence, and then is output to obtain art resources; s3: and introducing the art resources into the interactive system, and outputting after completion. Compared with the prior art, the invention gets rid of the limitation of the wall surface, can be laid out in any space of a museum, can create a full immersion environment and a full immersion type audio-visual experience environment, enables audiences to see objects on the back through the screen, can also use light transmission for secondary imaging, has higher permeability than the traditional projection screen, and can enable the cultural relic image to suspend in the air.

Description

Museum exhibition screen holographic projection display method
Technical Field
The invention relates to the field of digital museums, in particular to a screen holographic projection display method for exhibition of a museum.
Background
The method protects national cultural heritage, carries forward national cultural tradition, ensures national cultural safety, and is a global strategy problem facing all countries in the world at present. In the civilization development of over five thousand years, China retains a lot of historical cultural sites and relics, and millions of cultural relics such as art treasures and classical cadavers. The cultural relics are generally stored in libraries and museums and are regularly displayed, but some cultural relics may be older and have fragile textures and are not suitable for being displayed for a long time, and with the development of science and technology, the digital technology is gradually applied to the exhibition of the museums.
However, in the exhibition of the existing museum, the cultural relics are generally displayed by adopting a projection technology or a video playing technology, and the display mode has the following defects: (1) the video display of the cultural relics is mainly based on a single projection. (2) The cultural relic display is mainly video playing, and the display area is small. (3) The prior projection technology in museum exhibition can not achieve holographic effect and has weak immersion. (4) The film of the existing museum is mainly put on the wall surface and cannot be put in the air.
Disclosure of Invention
The invention aims to provide a holographic projection display method of a screen for exhibition of a museum.
The purpose of the invention is realized by the following technical scheme:
a holographic projection display method of a yarn screen for exhibition of a museum comprises the following steps:
s1: scanning the cultural relics, and processing, restoring and creating to obtain a new cultural relic image;
s2: the cultural relic image is subjected to dynamic manufacturing, special effect processing and sound processing in sequence, and then is output to obtain art resources;
s3: and introducing the art resources into the interactive system, and outputting after completion.
In step S1, the surface trace of the cultural relic is scanned by a scanning instrument to obtain complete surface information of the cultural relic.
Specifically, the present invention mainly relates to three scanning modes: 1. the handheld scanner is mainly used for scanning murals, wall surfaces and the like. 2. And scanning the whole ancient site by an unmanned aerial vehicle matrix. 3. Local scanning mainly using fine shooting.
In step S1, the information included in the scanned information picture is information of each local position on the surface of the cultural relic.
In step S1, the processing procedure specifically includes: and collaging and splicing the information pictures on the surfaces of the scanned cultural relics to obtain collaged pictures, and extracting culture elements from the collaged pictures to obtain a complete and closed outline manuscript.
Specifically, the collage process in the present invention is: firstly, finishing local high-definition pictures obtained by fine shooting, such as picture 1, picture 2 and picture 3 … …, then labeling the pictures in a classified way, such as tom-south ear chamber-east wall-upper part 1, tom-south ear chamber-east wall-upper part 2, tom-south ear chamber-east wall-upper part 3 and the like, then guiding the labeled pictures into Adobe Photoshop, then utilizing a Photograph script to split the pictures, automatically splicing the pictures according to the sequence by the script, and finally utilizing a Photoshop free transformation tool to adjust the deformed part.
Preferably, the cultural element extraction process specifically comprises: and extracting cultural images by adopting a digital painting technology, performing variation processing with different thicknesses on the edge of each extracted cultural image, and processing lines into a vector format to obtain a vector outline manuscript. Cultural elements refer to the images available for transmission in cultural relics, such as: the image of flying sky in Dunhuang fresco is an image with elephant, but has abstract meaning. The cultural elements and the cultural image can be regarded as the same concept in the invention and are all called as the cultural elements. In the extraction process, the importance of the cultural image (or the contribution degree of the cultural image to the whole work) is selectively extracted.
In step S1, the restoration process specifically includes: and coloring in real time on the outline draft, and blending according to the actual color of the cultural relic during coloring. The color determination process here specifically includes: firstly, importing the shot high-definition shadowless photo into Adobe Photoshop, obtaining CMYK values of colors by using a suction pipe tool, and then comparing the CMYK values with the records of archaeological literature and other archaeological data to obtain the CMYK values of the colors closest to the original colors.
And the colors are upgraded in hue, lightness and saturation during the adjustment. When the cultural relics are cultural relics of a few years, such as coffin murals in the recent 2000 years, the vividness and the brightness of the colors are lost, the saturation of the colors is properly increased and the brightness is also properly increased when the works are manufactured, and the steps are performed in image color matching software Adobe Lightroom.
In step S1, the creation is performed according to the original image of the cultural relic.
In step S2, the special effect processing includes a shadow special effect.
In step S2, single frame output is adopted during output, and after output is completed, the output is saved as a PNG format sequence frame, and then converted into a web image resource to become an art resource.
In step S3, the introduction into the interactive system specifically includes: an application environment is built by using a unity3d development platform (the biological application environment of the platform can call PNG image resources), art resources are developed, a human body interaction script Kinect development suite is called, and the derived sequence frame is called to realize human body interaction.
In step S3, when the output is actually applied, an interactive system including art resources is called in an actual environment to form a dynamic video, a screen and a projector are arranged according to a script, screen fusion is performed, and then debugging is performed.
Preferably, the projection is performed using a DLP projector, the bulb of which is directed towards the veil.
In step S3, packaging is performed before output.
The terms referred to in the present invention are explained below:
yarn curtain: the method is a demonstration form of projection imaging by means of projection, a spotlight and the like, and imaging media of which the imaging is still not separated from the entity are provided. The screen is made of gauze, the imaging medium is a thin screen like light yarn, and the screen can be very fine wire netting and steel wire gauze or gauze which is not easy to be seen by naked eyes.
Dlp (digital Light processing) projection technology: the DLP is called Digital Light Processing in full, and Chinese means "Digital optical Processing technology". The basic principle is that light beams pass through a three-color lens rotating at a high speed, are projected on a DMD component, and are projected on a large screen through an optical lens to complete image projection. The DLP projector is actually a full digital reflective projection device based on DMD technology. A DMD is formed by a plurality of tiny square mirror plates (referred to simply as micromirrors) closely arranged in rows and columns attached to electrical nodes of a silicon wafer, each micromirror corresponding to a pixel from which an image is generated. Therefore, the number of micromirrors of the DMD device determines the physical resolution of a DLP projector, which is usually referred to as SVGA mode with a resolution of 600 × 800, and it means that the number of micromirrors of the DMD device is 600 × 800 — 480000, which is quite complicated and precise. In the DMD device, each micromirror corresponds to a memory, and the memory can control the micromirror to switch rotation at two positions of ± 10 degrees. Today, DLP projectors are divided into one DLP projection system, two DLP projection systems, and three DLP projection systems by the number of DMD devices therein.
Projection of the screen: the dynamic video is projected onto the double-layer iron sand through the projector, and the dreamy gorgeous picture can emerge. Meanwhile, by the splicing technology of the projection multi-channel fusion system, the display of an oversized size can be completed, so that a spectacular scene is created.
The holographic technology comprises the following steps: the holographic technology firstly records object light wave information by utilizing an interference principle, namely, a shooting process: the shot object forms a diffused object beam under the irradiation of laser; the other part of laser beam is used as reference beam to irradiate the holographic film and is superposed with the object beam to generate interference, and the phase and amplitude of each point on the object light wave are converted into the intensity which is changed in space, so that the contrast and interval between interference fringes are used to record all information of the object light wave. The negative film with the interference fringes becomes a hologram or hologram after development, fixation and other processing procedures; the second step is to reproduce the object light wave information by using the diffraction principle, which is the imaging process: a hologram behaves like a complex grating, and the diffracted light wave of a linearly recorded sinusoidal hologram generally gives two images, an original image (also called the initial image) and a conjugate image, under coherent laser illumination. The reproduced image has strong stereoscopic impression and real visual effect. Each part of the hologram records optical information of each point on the object, so that in principle each part of the hologram can reproduce the whole image of the original object, and a plurality of different images can be recorded on the same film by multiple exposures and can be displayed separately without interference.
The invention can digitalize the cultural relic resources and can be repeatedly used through cultural relic scanning and cultural relic image restoration. Through the human body action recognition technology, the interaction between the video and audiences is realized, and the interestingness of the video and audiences is enhanced. The cultural relics can be more vivid and interesting through a special effect technology and a video making technology, and the propagation of cultural significance is facilitated. And creating an immersive interactive space by a projection technology and a screen fusion technology. In a specific space-time environment, the invention artistically and effectively selects, utilizes, reforms and combines substance culture entities in human daily life to deduce new mental culture implications showing individuals or groups.
The technical key points and the technical points to be protected of the invention mainly lie in that: 1. the whole method is implemented; 2. the application of human body action recognition interaction technology in the method; 3. the application of a video interaction mode in the method; 4. the method integrates the steps of scanning the cultural relics and recovering the cultural relics when the physical cultural relics are converted into the art resources which can be called.
Compared with the prior art, the invention has the following beneficial effects:
1. get rid of the limitation of the wall surface, and can be laid and exhibited in any space of a museum.
2. The holographic effect is increased, and a full immersion environment can be created.
3. And a projection fusion technology is utilized to build a full-immersion type voice and picture experience environment.
4. By utilizing the permeability of the yarn screen, the high light transmission can be realized, and simultaneously, the picture can still keep bright and the color is bright and saturated. The spectator can see the object on the back through the screen, can also utilize light transmissivity secondary imaging, and is more permeable than traditional projection curtain, can make historical relic image suspend in the air.
5. The display area is increased.
Drawings
FIG. 1 is a flow chart of a method of the present invention;
FIGS. 2 and 3 are two continuous partial pictures obtained by scanning;
FIG. 4 shows the extracted culture elements;
FIG. 5 is a top-quality cultural element;
FIG. 6 is a restored image of the cultural relic;
fig. 7 is an image of the authored cultural relic.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
Example 1
As shown in fig. 1, the technical solution of the holographic projection display method of a screen for exhibition of a museum of the present invention mainly comprises the following steps: 1. scanning cultural relics; 2. extracting culture elements; 3. restoring the image of the cultural relic; 4. creating a cultural relic image; 5. adding special effect elements; 6. adding an interactive system; 7. and (5) packaging and outputting.
More specifically, the steps are as follows:
step 101, scanning the existing cultural relics, and splicing the cultural relics through the scanning data. And scanning the surface trace of the cultural relic by using a scanning instrument to obtain complete cultural relic surface information. The cultural relic information of the step is local.
And 102, extracting cultural elements from the collaged picture, wherein the step mainly uses a digital drawing technology to change and process each image edge in different thicknesses, and the line processing is in a vector format to obtain a complete and closed vector line draft.
And 103, coloring in real time on the basis of 102, wherein the color is from the cultural relic, and the color is upgraded in hue, lightness and saturation to obtain a proper role image color.
And 104, re-creating the cultural relic picture on the basis of the obtained 103.
And 105, dynamically manufacturing the cultural relic image on the basis of 104.
And 106, performing special effect processing on the cultural relic image on the basis of the obtained 105, and adding lighting effect.
And step 107, processing the sound of the cultural relic image on the basis of the step 106, and adding sound effect.
And step 108, outputting the historical relic image in a single frame on the basis of step 107, and storing the historical relic image in a PNG format.
Step 109, on the basis of step 108, converting the PNG format file into a web image resource.
Step 110, on the basis of step 109, an application program environment is built.
And step 111, calling 108 art resources on the basis of the step 110 to form a dynamic video.
And step 112, building a screen projection environment according to the story script on the basis of the step 111.
In step 113, on the basis of 112, the projector position is set.
And step 114, performing screen fusion on the basis of step 113.
And step 115, performing dynamic video debugging on the basis of step 114.
And step 116, performing application program encapsulation output on the basis of step 115.
This embodiment gives a specific operation example of mural class: 1. scanning cultural relics: scanning the surface of the mural by using a scanner to obtain cultural relic surface traces; 2. splicing: as shown in fig. 2 and 3, two continuous local pictures are obtained, the two local pictures are spliced in Photoshop, and the other obtained pictures are sequentially subjected to the operation; 3. extracting culture elements: as shown in fig. 4, the spliced picture is led into an Adobe Illustrator, and a painting tool is used for painting to obtain a closed vector image (which is a human horse-driving chart); 4. as shown in fig. 5, the horse is colored by using a real-time coloring tool in Adobe Illustrator (wherein the whole horse body is brown yellow, the horse hoof is black, the bun is red, a hat worn on the person, clothes worn on the person and the whole carriage are dark gray which is nearly black, and the wheels are black); 5. restoring the image of the cultural relic: as shown in fig. 6, all the single cultural elements are pieced together to obtain a complete cultural relic image (including people riding on a horse, standing people, etc.); 6. creation of cultural relic image: as shown in fig. 7, cultural elements, which are cultural images, are imported into a carton analyzer, and a PNG format sequence frame is derived by performing skeleton binding animation (white parts in the drawing are bones). 7. Adding special-effect elements: and importing the exported PNG format sequence frame into Adobe After Effect for special Effect production, wherein the related plug-in has light Effect plug-in Optical plates, and finally exporting the sequence frame with Alpha channel. 8. Adding an interactive system: and developing by using a unity3d development platform, calling a human body interaction script Kinect development suite, and calling the derived sequence frame to realize human body interaction. 9. Packaging and outputting: the used resources and the application programs are packaged after being made, so that the subsequent use is facilitated (a screen projection environment is built in an actual field subsequently, a projector is arranged, and then the packaged resources and the packaged application programs are matched for use).
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.

Claims (10)

1. A holographic projection display method of a yarn screen for exhibition of a museum is characterized by comprising the following steps:
s1: scanning the cultural relics, and processing, restoring and creating to obtain a new cultural relic image;
s2: the cultural relic image is subjected to dynamic manufacturing, special effect processing and sound processing in sequence, and then is output to obtain art resources;
s3: and introducing the art resources into the interactive system, and outputting after completion.
2. The holographic projection display method for the museum exhibition screen as claimed in claim 1, wherein in step S1, the surface trace of the cultural relic is scanned by a scanning instrument to obtain the complete information of the cultural relic surface.
3. The holographic projection display method for the museum exhibition screen as claimed in claim 1, wherein in step S1, the information picture obtained by scanning includes information of each local position on the surface of the cultural relic.
4. The holographic projection display method of the museum exhibition screen, according to claim 1, wherein in step S1, the processing procedure is specifically as follows: and collaging and splicing the information pictures on the surfaces of the scanned cultural relics to obtain collaged pictures, and extracting culture elements from the collaged pictures to obtain a complete and closed outline manuscript.
5. The museum exhibition screen holographic projection display method according to claim 4, wherein the cultural element extraction process specifically comprises: and extracting cultural images by adopting a digital painting technology, performing variation processing with different thicknesses on the edge of each extracted cultural image, and processing lines into a vector format to obtain a vector outline manuscript.
6. The holographic projection display method of the museum exhibition screen, as claimed in claim 4, wherein in step S1, the recovery process is specifically: and coloring in real time on the outline draft, and blending according to the actual color of the cultural relic during coloring.
7. The holographic projection display method for museum exhibition screen as claimed in claim 6, wherein the color is further upgraded in hue, lightness and saturation during deployment.
8. The holographic projection display method of the screen for exhibition of museum according to claim 1, wherein in step S2, single frame output is adopted during output, and after output is completed, the output is saved as PNG format sequence frame, and then converted into web image resource to become art resource.
9. The holographic projection display method of the museum exhibition screen as claimed in claim 1, wherein in step S3, the introduction into the interactive system specifically includes: and (3) building an application environment by using a unity3d development platform, developing art resources, calling a human body interaction script Kinect development suite, and calling a derived sequence frame to realize human body interaction.
10. The holographic projection display method of the museum exhibition screen as claimed in claim 1, wherein in step S3, when the output screen is actually applied, an interactive system including art resources is called in an actual environment to form a dynamic video, the screen and the projector are arranged according to a script, screen fusion is performed, and then debugging is performed.
CN202110980187.6A 2021-08-25 2021-08-25 Museum exhibition screen holographic projection display method Pending CN113763246A (en)

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