Calculation ghost imaging device realized based on mobile phone
By using mobile phone cameras and chrome-plated glass masks in ghost imaging devices, combined with computer processing of light intensity information and speckle modes, the problems of high cost and large size are solved, and more efficient spectral range and anti-interference ability are achieved, promoting The practical process of ghost imaging.
Patent Information
- Application Number
- CN202420373118.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-27
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-02-27
AI Technical Summary
The cost of ghost imaging devices is high and the system is too large, making them inconvenient to carry, making them difficult to achieve practical and civilized use.
Using a mobile phone camera and a mask version made of chrome glass instead of digital micromirror devices and single-pixel detectors, illuminates speckle through mobile phone flash and collects reflected light beams using mobile phone cameras, and combines the computer to perform correlation operations of light intensity information and speckle mode. Implement modulation of the light field and acquisition of reconstructed images.
It reduces the cost of ghost imaging devices, expands the spectral range of mobile phone photography, improves anti-interference ability, and promotes the practical process of ghost imaging.
Smart Images
Figure CN222281021U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of imaging devices, in particular to a computational ghost imaging device based on a mobile phone. Background Art
[0002] As a new imaging method, ghost imaging has the advantages of strong anti-interference ability, high imaging resolution, and simple structure compared to traditional imaging. Whether there is light field fluctuation is the key to the realization of ghost imaging technology. Ghost imaging can be divided into two-arm ghost imaging and single-arm ghost imaging according to the light field modulation method. Among them, two-arm ghost imaging usually uses rotating frosted glass to modulate the light beam emitted by the laser to achieve light field fluctuations; the most common form of single-arm ghost imaging is computational ghost imaging, which uses digital micromirror devices (DMDs) to achieve light field fluctuations.
[0003] Ghost imaging is still in the experimental stage, and its development goal and trend are to move towards practical and civilian use. The current spectral range of mobile phone photography is 380nm-780nm, and is greatly affected by the environment. In low visibility conditions, the quality of the photos taken will be greatly affected. At present, ghost imaging mostly uses digital micromirror devices (DMDs) and single-pixel detectors, which are costly, and the system is too large to be carried. Utility Model Content
[0004] The utility model aims to provide a computational ghost imaging device based on a mobile phone, which solves the problems of high ghost imaging cost, large system volume and inconvenience in carrying.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a computational ghost imaging device based on a mobile phone, comprising a mobile phone body, a mobile phone camera is arranged on the back of the mobile phone body, a mobile phone flash is arranged inside the mobile phone body and below the mobile phone camera, a mask is arranged on the outside of the mobile phone flash, and an object is arranged on the end of the mask away from the mobile phone body.
[0006] Preferably, the mobile phone flashlight illuminates the mask, and the speckle is projected onto the object. By designing the illumination of the mobile phone flashlight on the mask, the speckle can be formed and projected onto the object.
[0007] Preferably, the mobile phone camera captures the light beam reflected by the object. By designing the mobile phone camera, the light beam reflected by the object is received by the mobile phone camera and stored in the mobile phone album in the form of a photo.
[0008] Preferably, the mobile phone camera is electrically connected to a computer. By designing the computer, local speckle sub-patterns are extracted according to the motion information of the object, and the computer associates the image containing the light intensity information of the object with the local speckle information of the object to obtain a reconstructed image of the object.
[0009] Preferably, the mask completely covers the mobile phone flashlight, and the mask is made of chrome-plated glass. By designing the mask, chrome has the characteristics of low cost, wide spectrum band and unlimited modulation speed, and chrome plating can reduce the cost of the device and achieve popularization.
[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0011] The utility model uses a mask plate instead of a DMD to project speckles, and uses a mobile phone camera instead of a barrel detector to collect light intensity information reflected by an object, which can expand the spectral range of mobile phone photography, improve the anti-interference ability of mobile phone photography, reduce the cost of ghost imaging, and promote the practical application of ghost imaging. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a schematic diagram of the structure of the mobile phone body of the utility model;
[0013] Figure 2 It is a schematic diagram of the ghost imaging device of the utility model;
[0014] Figure 3 It is the work flow chart of the utility model.
[0015] In the figure: 1. mobile phone flash; 2. mask; 3. object; 4. speckle; 5. mobile phone camera; 6. computer; 7. mobile phone body. DETAILED DESCRIPTION
[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0017] See also Figure 1 , Figure 2A computational ghost imaging device based on a mobile phone includes a mobile phone body 7, a mobile phone camera 5 is arranged on the back of the mobile phone body 7, a mobile phone flash 1 is arranged inside the mobile phone body 7 and below the mobile phone camera 5, a mask 2 is arranged on the outside of the mobile phone flash 1, the mask 2 completely covers the mobile phone flash 1, the mask 2 is made of chrome-plated glass, by designing the mask 2, chrome has the characteristics of low cost, wide spectrum band and infinite modulation speed, chrome plating can reduce the cost of the device and achieve popularization, an object 3 is arranged at one end of the mask 2 away from the mobile phone body 7, the mobile phone flash 1 irradiates the mask 2, and a speckle 4 is projected on the object 3, by designing the irradiation of the mobile phone flash 1 on the mask 2, the speckle 4 can be formed and projected on the object 3, the mobile phone camera 5 is electrically connected to a computer 6, by designing the computer 6, a local speckle 4 sub-mode is extracted according to the motion information of the object 3, the computer 6 associates a picture containing the light intensity information of the object 3 with the local speckle 4 information where the object 3 is located, and obtains a reconstructed image of the object 3.
[0018] See also Figure 1 , Figure 2 , the mobile phone camera 5 captures the light beam reflected by the object 3. By designing the mobile phone camera 5, the light beam reflected by the object 3 is received by the mobile phone camera 5 and stored in the mobile phone album in the form of photos. The n light intensity values S contained in a large number of photos taken by the mobile phone n (x,y),
[0019]
[0020] Q n (x, y) is the local speckle information, and M(x, y) is the object information;
[0021] The reconstructed image of the object is obtained by performing a second-order correlation operation on the light intensity value and the speckle information;
[0022]
[0023] is the average value of light intensity detection, is the average value of the speckle 4 pattern information.
[0024] The specific implementation process of the utility model is as follows: during imaging, the flashlight 1 of the mobile phone illuminates the mask 2, and the mask 2 forms a random speckle 4 that irradiates the object 3. The object 3 only occupies a part of the random speckle 4. The speckle 4 does not move, and the object 3 moves. When the object 3 moves to different moments, the local speckle 4 irradiated on the object 3 is different, thus generating fluctuations in the light field, realizing the modulation of the speckle 4 on the object 3, and using the mobile phone camera 5 to continuously shoot a large number of images of the object 3, and record them in the mobile phone album. The image contains the light field information of the object 3 after being modulated; according to the motion information of the object 3, the local speckle 4 information is extracted, and this part of the local speckle 4 is the reconstructed speckle 4 used for correlation operation. After that, the pictures taken by the mobile phone are imported into the computer 6, and the computer 6 performs correlation operation on the light intensity information of the object 3 and the local speckle 4 information to obtain the reconstructed image of the object 3.
[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A computational ghost imaging device based on a mobile phone, comprising a mobile phone body (7) and speckles (4), characterized in that: A mobile phone camera (5) is arranged on the back of the mobile phone body (7), a mobile phone flash (1) is arranged inside the mobile phone body (7) and below the mobile phone camera (5), a mask plate (2) is arranged on the outside of the mobile phone flash (1), and an object (3) is arranged on the side of the mask plate (2) away from the mobile phone body (7).
2. The computational ghost imaging device based on a mobile phone according to claim 1, characterized in that: The mobile phone flashlight (1) illuminates the mask (2), and the speckle (4) is projected onto the object (3).
3. The computational ghost imaging device based on a mobile phone according to claim 1, characterized in that: The mobile phone camera (5) captures and collects the light beam reflected by the object (3).
4. The computational ghost imaging device based on a mobile phone according to claim 1, characterized in that: The mobile phone camera (5) is electrically connected to a computer (6).
5. The computational ghost imaging device based on a mobile phone according to claim 1, characterized in that: The mask plate (2) completely covers the mobile phone flashlight (1), and the mask plate (2) is made of chrome-plated glass.