CN114630084A - Method for improving resolution in projection system - Google Patents
Method for improving resolution in projection system Download PDFInfo
- Publication number
- CN114630084A CN114630084A CN202011435103.2A CN202011435103A CN114630084A CN 114630084 A CN114630084 A CN 114630084A CN 202011435103 A CN202011435103 A CN 202011435103A CN 114630084 A CN114630084 A CN 114630084A
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- CN
- China
- Prior art keywords
- data
- reference light
- digital micromirror
- storage medium
- optical path
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
- H04N9/3188—Scale or resolution adjustment
-
- 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
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Holo Graphy (AREA)
Abstract
The invention discloses a method for improving resolution in a projection system, which comprises the following steps: a frame synchronization signal transmitting module, wherein the frame synchronization signal transmitting module is connected with the digital micromirror driving module, the digital micromirror driving module is connected with the digital micromirror, and the method comprises the following steps: the caption data and the video data are both input into the caption superposition module; step two: in the holographic storage reproduction stage, the light shield is closed, only the reference light is reserved to irradiate the storage medium, after the storage medium is irradiated by the original reference light, the original storage data page can be reproduced through diffraction of the hologram, and is received by the imaging device after being collimated by the ninth lens, wherein the second light shield is kept closed, the reference light is prevented from entering a subsequent system, and the quality of a reproduced image is influenced. Step three: and taking the next frame as the current frame, and repeating the step two.
Description
Technical Field
The invention relates to the technical field of image resolution, in particular to a method for improving resolution in a projection system.
Background
With the advent of the big data age, the enormous data storage requirements have posed a serious challenge to data storage technologies. The holographic optical storage technology gradually develops to be outstanding in the technical field of data storage by virtue of the advantages of large storage capacity, high storage density, high access speed, long storage life and the like. The holographic storage technology is mainly realized by the steps that in the data recording stage, information light and reference light are interfered in a storage medium, and the information is recorded in a mode of storing interference fringes; in the data reproduction stage, the stored hologram is irradiated with the same reference light as that used in recording, and the stored information is reproduced by diffraction of the hologram.
In the holographic storage technology, data is recorded and read in the form of data pages, and compared with the traditional optical storage technology of single-point scanning access, the access speed is improved qualitatively. However, in the holographic storage and reproduction stage, due to the performance of the storage medium, the access mode, environmental disturbance and other interference factors, the diffraction efficiency of the original storage image diffracted by irradiating the hologram with the reference light is low, and the diffraction efficiency is defined as the ratio of the imaging luminous flux to the incident luminous flux of holographic diffraction. In a holographic storage system using pure lithium niobate as a storage medium, the reconstruction diffraction efficiency is only 11.6%, so that the definition of the restored original image is not high, and the performance of the holographic storage technology is greatly influenced. At present, in order to improve the definition of the restored image, the diffraction efficiency in the holographic storage reproduction stage is generally improved by improving the performance of the storage medium, improving the storage mode, improving the stability of the optical path system, and the like, and the improvement of the aspects is generally difficult and complicated.
Disclosure of Invention
To solve the above technical problem, the present invention provides a method for improving resolution in a projection system.
The invention provides a method for improving resolution in a projection system, compared with the related technology, the technical scheme of the invention is as follows:
a method of increasing resolution in a projection system, comprising: the frame synchronization signal transmitting module is connected with the digital micromirror driving module, the digital micromirror driving module is connected with the digital micromirror, and the optical path compensator can be a continuously adjustable optical path compensator or an optical path compensating element with a fixed optical path; the method comprises the following steps:
the method comprises the following steps: the caption data and the video data are both input into the caption superposition module;
step two: in the holographic storage reproduction stage, the light shield is closed, only the reference light is reserved to irradiate the storage medium, after the storage medium is irradiated by the original reference light, the original storage data page can be reproduced through diffraction of the hologram, and is received by the imaging device after being collimated by the ninth lens, wherein the second light shield is kept closed, the reference light is prevented from entering a subsequent system, and the quality of a reproduced image is influenced.
Step three: and taking the next frame as the current frame, and repeating the step two.
A further solution is that the storage medium is placed at the focus of the eighth lens.
The further scheme is that the method matches corresponding model categories according to the application scene and data characteristics of the power grid service data, and comprises the following steps: inquiring the model base based on the application scene and the data characteristics of the power grid service data to obtain the model category corresponding to the application scene and the data characteristics; and obtaining at least two analysis models corresponding to the model types.
The invention has the following beneficial effects: the two galvanometers are adopted to randomly vibrate at a small angle simultaneously, so that the laser beam can scan the stored data page in the x direction and the y direction simultaneously to obtain more high-frequency information of the data page, and the interference fringes containing more data page information are stored, so that the data page with higher resolution can be recovered in a data reproduction stage, and the performance of the holographic storage technology is improved.
Detailed Description
The present invention will be further described with reference to the following embodiments.
The embodiment provides a method for improving resolution in a projection system, which includes: the frame synchronization signal transmitting module is connected with the digital micromirror driving module, the digital micromirror driving module is connected with the digital micromirror, and the optical path compensator can be a continuously adjustable optical path compensator or an optical path compensating element with a fixed optical path; the method comprises the following steps:
the method comprises the following steps: the caption data and the video data are both input into the caption superposition module;
step two: in the holographic storage reproduction stage, the light shield is closed, only the reference light is reserved to irradiate the storage medium, after the storage medium is irradiated by the original reference light, the original storage data page can be reproduced through diffraction of the hologram, and is received by the imaging device after being collimated by the ninth lens, wherein the second light shield is kept closed, the reference light is prevented from entering a subsequent system, and the quality of a reproduced image is influenced.
Step three: and taking the next frame as the current frame, and repeating the step two.
A further solution is that the storage medium is placed at the focus of the eighth lens.
The further scheme is that the method matches corresponding model categories according to the application scene and data characteristics of the power grid service data, and comprises the following steps: inquiring the model base based on the application scene and the data characteristics of the power grid service data to obtain the model category corresponding to the application scene and the data characteristics; and acquiring at least two analysis models corresponding to the model types.
The two galvanometers are adopted to randomly vibrate at a small angle simultaneously, so that the laser beam can scan the stored data page in the x direction and the y direction simultaneously to obtain more high-frequency information of the data page, and the interference fringes containing more data page information are stored, so that the data page with higher resolution can be recovered in a data reproduction stage, and the performance of the holographic storage technology is improved.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (3)
1. A method for increasing resolution in a projection system, comprising: the frame synchronization signal transmitting module is connected with the digital micromirror driving module, the digital micromirror driving module is connected with the digital micromirror, and the optical path compensator can be a continuously adjustable optical path compensator or an optical path compensating element with a fixed optical path; the method comprises the following steps:
the method comprises the following steps: the caption data and the video data are both input into the caption superposition module;
step two: in the holographic storage reproduction stage, the light shield is closed, only the reference light is reserved to irradiate the storage medium, after the storage medium is irradiated by the original reference light, the original storage data page can be reproduced through diffraction of the hologram, and is received by the imaging device after being collimated by the ninth lens, wherein the second light shield is kept closed, the reference light is prevented from entering a subsequent system, and the quality of a reproduced image is influenced.
Step three: and taking the next frame as the current frame, and repeating the step two.
2. The method of claim 1, wherein the storage medium is placed at a focal point of the eighth lens.
3. The method of claim 2, wherein matching the corresponding model class according to the application scenario and data characteristics of the grid service data comprises: inquiring the model base based on the application scene and the data characteristics of the power grid service data to obtain the model category corresponding to the application scene and the data characteristics; and acquiring at least two analysis models corresponding to the model types.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011435103.2A CN114630084A (en) | 2020-12-10 | 2020-12-10 | Method for improving resolution in projection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011435103.2A CN114630084A (en) | 2020-12-10 | 2020-12-10 | Method for improving resolution in projection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114630084A true CN114630084A (en) | 2022-06-14 |
Family
ID=81894853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011435103.2A Withdrawn CN114630084A (en) | 2020-12-10 | 2020-12-10 | Method for improving resolution in projection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114630084A (en) |
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2020
- 2020-12-10 CN CN202011435103.2A patent/CN114630084A/en not_active Withdrawn
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Application publication date: 20220614 |