Single-pixel imaging system and method based on wheeled modulation

Abstract

The embodiment of the invention relates to a single-pixel imaging system and method based on wheeled modulation. The system comprises a wheeled modulation device, a single-pixel detector, a modulation area acquisition module and a data processor, the wheel type modulation device comprises a rotating motor and a wheel type rotating base, the rotating motor is fixedly connected with the wheel type rotating base, modulation patterns integrated into a long strip are arranged on the rim portion of the wheel type rotating base, and the rotating motor drives the wheel type rotating base provided with the modulation patterns to periodically rotate. Dynamically modulating the target space through the modulation pattern which changes periodically through rotation; the modulation area acquisition module is used for acquiring an area corresponding to a single modulation pattern on the wheel type modulation device; the single-pixel detector is used for detecting the same number of single-pixel detection values in each rotation period modulation area; and the data processor is used for receiving the single-pixel detection values, performing correlation operation on all modulation patterns in each rotation period and the corresponding single-pixel detection values, and reconstructing an image of the target space.

Description

Technical Field

[0001] The present invention relates to the technical field of single-pixel imaging, and in particular, to a single-pixel imaging system and method based on wheel modulation. Background Art

[0002] The imaging method of single-pixel imaging is different from the direct acquisition imaging of traditional area array detectors. It adopts an indirect imaging method in which a single-pixel detector is used for acquisition and combined with known modulation patterns for computational reconstruction. Since the detector used in the imaging process is a single pixel, that is, single-pixel imaging, when the pixel size is made large enough, it can replace the area array detection and achieve low-light imaging and low-dose imaging. Single-pixel imaging uses a single-pixel detector, so it has a huge price advantage in some imaging bands where area array detectors are relatively expensive, such as infrared light and X-rays.

[0003] The modulation component in the existing single-pixel imaging device is commonly a digital micromirror device (DMD). Its general modulation speed is 22 kHz, and it can achieve an imaging speed of 21 fps for a 32×32 pixel image under full sampling. However, when the field of view increases or the number of imaging pixels increases, the required full sampling number increases, and the corresponding imaging speed will also decrease. There is an inherent contradiction between a large field of view, multiple pixels, and imaging speed. The modulation speed of the rotary mask is not restricted by the field of view and pixels, and only related to the rotation speed and the size of the disk surface of the turntable. It etches the known modulation pattern on the disk and rotates the disk to achieve fast modulation. This modulation method can achieve an imaging speed of 60 fps for 59×61 pixels, and its modulation speed can be even faster. This rotary modulation has advantages such as fast modulation speed and low price compared with DMD. However, since there will be certain distortion in the process of converting the rectangular coordinate pattern into the rotary polar coordinate pattern, the incomplete modulation pattern will introduce certain noise, and its imaging result usually requires certain correction.

[0004] How to solve the problem of image distortion while ensuring the imaging speed and imaging field of view has become an urgent problem to be solved. Summary of the Invention

[0005] The object of the present invention is to provide a single-pixel imaging system and method based on wheel modulation to solve the defects of the existing technology. By setting the integrated long-strip modulation pattern on the rim of the wheel-type rotating base, the target space is modulated without distortion in a periodic and dynamic manner by rotating.

[0006] To achieve the above object, the first aspect of the present invention provides a single-pixel imaging system based on wheel modulation, and the system includes:

[0007] Wheel-type modulation device, single-pixel detector, modulation area acquisition module, and data processor;

[0008] The wheel-type modulation device includes a rotating motor and a wheel-type rotating base. The rotating motor is fixedly connected to the wheel-type rotating base. A modulation pattern integrated into a strip is provided on the rim portion of the wheel-type rotating base. The rotating motor drives the wheel-type rotating base provided with the modulation pattern to perform periodic rotation, and dynamically modulates the target space through the modulation pattern that changes periodically through rotation.

[0009] The modulation area acquisition module is used to acquire the area corresponding to a single modulation pattern on the wheel-type modulation device.

[0010] The single-pixel detector is used to detect an equal number of single-pixel detection values in the modulation area for each rotation period.

[0011] The data processor is used to receive the single-pixel detection values, and perform correlation operations on all the modulation patterns and their corresponding single-pixel detection values within each rotation period to reconstruct the image of the target space.

[0012] Further, the substrate of the modulation pattern is coated paper, and the modulation pattern is printed on the coated paper by a printing method.

[0013] Further, the coated paper adheres along the rim portion.

[0014] Further, the material of the wheel-type rotating base is plastic.

[0015] Further, the modulation pattern is a cyclic S matrix or a Hadamard matrix or a random matrix.

[0016] Further, the dynamic modulation of the target space includes an active light field modulation method and a passive light field modulation method; wherein, the active light field modulation method is that a light source irradiates the modulation area of the modulation pattern on the wheel-type rotating base, and the modulated light is reflected by the target object and then received by the single-pixel detector; the passive light field modulation method is that a light source irradiates the target object, and the reflected light of the target object is imaged on the modulation area of the modulation pattern on the wheel-type rotating base through an imaging lens, and the modulated light is reflected by the modulation area and then received by the single-pixel detector.

[0017] Further, the rotating motor is a variable-speed rotating motor.

[0018] Further, the width size of the rim portion is set according to the size of the imaging field of view.

[0019] Further, the printing method is digital printing or laser printing or offset printing.

[0020] A second aspect of the present invention provides a single-pixel imaging method based on wheel-type modulation, including:

[0021] Dynamically modulate the target space through a modulation pattern that changes periodically upon rotation;

[0022] Obtain the area corresponding to a single modulation pattern on the wheeled modulation device;

[0023] Detect the single-pixel detection values of an equal number of modulation regions in each rotation period;

[0024] Receive the single-pixel detection values, and perform an associative operation on all the modulation patterns and their corresponding single-pixel detection values within each rotation period to reconstruct the image of the target space.

[0025] A third aspect of the present invention provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it implements the single-pixel imaging method based on wheeled modulation described in any one of the above second aspects.

[0026] A fourth aspect of the present invention provides a computer device, including a memory, a processor, and a computer program stored on the memory. The processor executes the computer program to implement the single-pixel imaging method based on wheeled modulation described in any one of the above second aspects.

[0027] A single-pixel imaging system and method based on wheeled modulation provided by an embodiment of the present invention realize distortion-free periodic dynamic modulation of the target space in the form of rotational movement by arranging an integrated long-strip modulation pattern on the rim of a wheeled rotating base. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of a single-pixel imaging system based on wheeled modulation provided by Embodiment 1 of the present invention;

[0029] Figure 2 Side view structure diagram of the wheeled modulation device provided by Embodiment 1 of the present invention;

[0030] Figure 3 Front view structure diagram of the wheeled modulation device provided by Embodiment 1 of the present invention;

[0031] Figure 4 Left view structure diagram of the wheeled modulation device provided by Embodiment 1 of the present invention;

[0032] Figure 5 (a) Example of a 15th-order cyclic S matrix provided by Embodiment 1 of the present invention;

[0033] Figure 5 (b) Two-dimensional modulation pattern formed by integrating each row in the 15th-order cyclic S matrix provided by Embodiment 1 of the present invention;

[0034] Figure 5(c) is an example of a long bar modulation pattern integrated with a 15th-order S matrix provided by Embodiment 1 of the present invention;

[0035] Figure 6 is a long bar modulation pattern integrated with a 323rd-order S matrix provided by Embodiment 1 of the present invention;

[0036] Figure 7 is a multiplexing diagram of multiple modulation patterns provided by Embodiment 1 of the present invention;

[0037] Figure 8 is a schematic diagram of the passive optical field modulation principle based on wheel modulation provided by Embodiment 1 of the present invention;

[0038] Figure 9 is a time-voltage output diagram of a single-pixel detector provided by Embodiment 1 of the present invention;

[0039] Figure 10 is a single-pixel imaging result diagram based on wheel modulation provided by Embodiment 1 of the present invention;

[0040] Figure 11 is a flowchart of a single-pixel imaging method based on wheel modulation provided by Embodiment 2 of the present invention;

[0041] Figure 12 is a schematic diagram of the structure of a computer device provided by Embodiment 4 of the present invention. Detailed implementation manners

[0042] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0043] The technical solutions of the present invention will be further described in detail below through the accompanying drawings and embodiments.

[0044] An on - wheel modulation - based single - pixel imaging system and method according to an embodiment of the present invention directly sets the modulation pattern in rectangular coordinates on the rim of a wheel - type rotating base without the need for polar - coordinate transformation, avoiding the problem of pattern distortion; the modulation pattern adheres to the entire rim, and the modulation area can be arbitrarily selected within a 360 - degree rotation range to achieve 360 - degree imaging, increasing the imaging angle; using a common coated - paper substrate combined with batch printing and adhering to the rim not only reduces the production cost of the modulation pattern, improves the reusability of the pattern, but also improves the convenience of replacing and customizing different modulation patterns; the wheel - type rotating base is made of lightweight materials such as plastic, improving the rotation speed and the responsiveness of the system; the variable - speed rotating motor can adjust the rotation speed according to imaging requirements, enabling the system to operate flexibly under different resolution and frame - rate requirements; the width of the rim part can be set according to the size of the imaging field of view, providing flexible control of the imaging range and meeting the imaging requirements of objects of different sizes; multiple printing methods are available, and users can select the most suitable printing method according to production scale, cost, and quality requirements, better meeting the needs of different users.

[0045] Embodiment 1

[0046] Figure 1 It is a schematic diagram of an on - wheel modulation - based single - pixel imaging system provided by Embodiment 1 of the present invention. As Figure 1 shown, the on - wheel modulation - based single - pixel imaging system includes: a wheel - type modulation device 1, a single - pixel detector 2, a modulation - area acquisition module 3, and a data processor 4.

[0047] Figure 2 It is a side - view structure diagram of the wheel - type modulation device provided by Embodiment 1 of the present invention, Figure 3 It is a front - view structure diagram of the wheel - type modulation device provided by Embodiment 1 of the present invention, Figure 4 It is a left - view structure diagram of the wheel - type modulation device provided by Embodiment 1 of the present invention. Combining Figure 2 、 Figure 3 and Figure 4 shown, the wheel - type modulation device 1 includes a rotating motor 11 and a wheel - type rotating base 12. The rotating motor 11 and the wheel - type rotating base 12 are fixedly connected by screws 13. The rim part 15 of the wheel - type rotating base 12 is provided with a modulation pattern 16 integrated into a strip. Among them, Figure 4 on the rim part 15 of, a modulation pattern 16 integrated into a strip is pasted. The rotating motor 11 in this embodiment is a mechanical hard disk. After being powered on, the spindle motor of the mechanical hard disk drives the wheel - type rotating base 12 fixed on the mechanical hard disk to rotate. It should be noted that there is no limitation on the rotating motor 11 here, and it can be an ordinary rotating motor, driving the wheel - type rotating base 12 to rotate through a transmission shaft.

[0048] In an alternative solution, the wheel-type modulation device 1 further includes a Z-axis displacement stage 14. The lifting surface 141 of the Z-axis displacement stage 14 is fixedly connected to the rotating motor 11. The rotating motor 11 drives the wheel-type rotating base 12 to be adjusted up and down by manually adjusting the rotating rod 142 of the Z-axis displacement stage 14 to ensure the precise alignment of the initial modulation pattern.

[0049] The rotating motor 11 of the wheel-type modulation device 1 drives the wheel-type rotating base provided with the long-strip modulation pattern 16 to rotate periodically, and dynamically modulates the target space through the modulation pattern that changes periodically with rotation.

[0050] Specifically, the main shaft motor of the rotating motor 11 drives the wheel-type rotating base 12 to rotate periodically, and the modulation pattern in its imaging field of view changes continuously, thereby dynamically modulating the target space. Among them, when the wheel-type rotating base 12 rotates one circle, the modulation of the target space within one cycle is completed. By continuously rotating the wheel-type rotating base 12, the periodic modulation of the target space is realized. Preferably, the rotating motor 11 is a variable-speed rotating motor, and its rotation speed is positively correlated with the imaging speed. The material of the wheel-type rotating base 12 is plastic or other light materials to reduce the rotational inertia and increase the rotation speed.

[0051] Among them, the modulation pattern 16 is a modulation matrix that can be used for single-pixel image reconstruction. Optionally, the modulation pattern 16 is a cyclic S matrix or a Hadamard matrix or a random matrix. The cyclic S matrix is a special binary matrix, which is generated by generating an initial matrix and performing a cyclic shift operation. The basis set of the matrix is orthogonally complete to ensure that the light intensity information of the object can be effectively captured during imaging, and theoretically, the image can be perfectly reconstructed. Preferably, the size and resolution of the modulation pattern 16 can be set according to the imaging requirements. The generation scheme of the cyclic S matrix is specifically as follows: When S i,j represents the element in the i-th row and j-th column of the S matrix, if the first row S of the S matrix is known 0,j , then all the element values of the S matrix can be obtained from the following relational formula (1):

[0052]

[0053] where n = pq represents the order of the S matrix, i, j = 0,..., n - 1; p is a prime number, and q = p + 2 is also a prime number. And the first row S of the S matrix 0,j can be obtained from the following relational formulas (2)-(4):

[0054]

[0055]

[0056]

[0057] Among them, the formula that j is congruent to 0 modulo p is expressed as j≡0 (mod p), which means that the remainders of j and 0 when divided by p are equal. And j being a quadratic residue modulo p means that there exists a number x such that the equation x 2 ≡j (mod p) holds, that is, there exists x 2 whose remainder when divided by p is equal to that of j. To demonstrate the generation of the cyclic S matrix well, we give Figure 5 the following example. When p = 3 and q = 5 are selected, we can obtain an S matrix of order n = 15, that is, a 15-order S matrix as shown in Figure 5 (a), where each black and white pixel represents a value of 0 and 1. When we reorganize each row into a two-dimensional matrix of p×q, we can obtain the corresponding modulation patterns as shown in Figure 5 (b). Due to the similarity of adjacent modulation patterns, as shown in Figure 5 (c), we can integrate each modulation pattern into a long strip set. When light shines on a certain modulation pattern, by translating one pixel, another modulation pattern can be irradiated. Therefore, a single modulation pattern is the imaging field of view.

[0058] Figure 6 This is the long strip modulation pattern integrated with the 323-stage S matrix provided in the first embodiment of the present invention. The size of a single modulation pattern is 17×19. By selecting p = 17, q = 19, and n = p*q = 323, the corresponding 323-order S matrix can be generated. Then, after reconstructing and merging each row of the S matrix, the merging method is to fix the first modulation matrix and extract the rightmost column of each subsequent modulation matrix for sequential merging. Therefore, the size of this S matrix is 17×(19 + 322), that is, 17×341.

[0059] Among them, the modulation pattern 16 can be directly etched and coated on the rim part 15, or a metal paper sheet with the modulation pattern 16 after laser processing can be pasted on the rim part 15. Preferably, the copperplate paper is used as the substrate of the modulation pattern 16, and the modulation pattern 16 is printed on the copperplate paper by printing. After cutting the copperplate paper, it is adhered along the rim part 15. Preferably, the length of the copperplate paper is less than the circumference of the rim part 15 to facilitate determining the starting position of the modulation pattern. Figure 7 This is the multiplexing diagram of multiple modulation patterns provided in the first embodiment of the present invention. As shown in Figure 7 , the generated modulation patterns 16 are arranged side by side, and multiple modulation patterns 16 can be printed on a single copperplate paper at the same time. Optionally, the printing method is digital printing or laser printing or offset printing. The copperplate paper has a smooth surface and a high reflectivity. The printed ink absorbs light to achieve amplitude modulation of the light intensity. Preferably, the width size along the rim part 15 is set according to the size of the imaging field of view, and its width size is positively correlated with the size of the imaging field of view.

[0060] In a possible implementation, dynamically modulating the target space is an active light field modulation method. The light source 5 irradiates the modulation area of the modulation pattern 16 on the wheeled rotating base 12. After the modulated light is reflected by the target object 6, it is received by the single-pixel detector 2.

[0061] In yet another possible implementation, dynamically modulating the target space is a passive light field modulation method. The light source 5 irradiates the target object 6, and the reflected light of the target object 6 is imaged on the modulation area of the modulation pattern 16 on the wheeled rotating base 12 through the lens 7. After the modulated light is reflected by the modulation area, it is received by the single-pixel detector 2.

[0062] The modulation area acquisition module 3 is used to acquire the modulation area corresponding to the wheeled modulation device 1 modulating the target space in each period. Among them, the periodic dynamic light field modulation of the target space is realized by rotating the wheeled modulation device 1. The modulation area acquisition module 3 can be one of a collecting lens and an imaging lens, or a combination of the two.

[0063] The single-pixel detector 2 is used to detect the same number of single-pixel detection values in the modulation area in each period. Optionally, the single-pixel detector 2 can be a detection device such as a photodiode, an avalanche photodiode, and a photomultiplier tube.

[0064] Figure 8 This is a schematic diagram of the principle of passive light field modulation based on wheeled modulation provided by Embodiment 1 of the present invention. The light source 5 projects light onto the target object 6, and the reflected light of the target object 6 is imaged on the wheeled modulation device 1 through the lens 7. The modulation area of the modulation pattern 16 performs amplitude modulation on the image of the target object 6. The rotating wheeled rotating base 12 rotates continuously, and the image of the target object 6 after modulation is sent to the single-pixel detector 2 by the collecting lens 8 to obtain single-pixel detection values.

[0065] The data processor 4 is used to receive the single-pixel detection values sent by the single-pixel detector 2, and perform correlation operations on all the modulation patterns and their corresponding single-pixel detection values in each rotation period to reconstruct the image of the target space.

[0066] In a specific example, the light source 5 is a white light source, the target object 6 is the letter L cut from reflective paper, and the single-pixel detector 2 is an avalanche photodiode. The light source 5 irradiates the letter L, and its reflected light is imaged on the modulation area of the wheeled modulation device 1 through the lens 7. As the rotating base 12 rotates, the image of the target object 6 modulated by the modulation pattern 16 is sent to the single-pixel detector 2 by the collecting lens 8 for collection. Figure 9 This is the time-voltage output diagram of the single-pixel detector provided by Embodiment 1 of the present invention, as Figure 9As shown, in the time-voltage graph collected and output by the single-pixel detector, the abscissa is the acquisition time in seconds, and the ordinate is the voltage value in volts. The wheeled rotating base 12 rotates one circle every time period T, completing a full sampling of one cycle, and the voltage value shows periodic changes. The rotation speed set here is 30 revolutions per second, and the time period T is 1 / 30 second. By integrating the signals within the period T, the bucket detector values corresponding to each modulation pattern are obtained, and this bucket value is sent to the data processor 4. The data processor 4 performs an association operation on this bucket value and the corresponding modulation pattern to obtain a reconstructed image with an imaging speed of 30 fps. The imaging result is as Figure 10 shown. Among them, the association operation adopts a second-order association algorithm, and the algorithm is as shown in formula (5):

[0067]

[0068] Among them, G(x, y) is the image of the target object obtained by the second-order association operation, and I i (x, y) is each set modulation matrix, i represents all positive integers less than or equal to the total number of sampling times N, and S i is the light intensity collected by the single-pixel detector after the light reflected by the target object is modulated by each corresponding modulation matrix.

[0069] Embodiment 2

[0070] Embodiment 2 of the present invention provides a single-pixel imaging method based on wheeled modulation. This method is implemented based on the single-pixel imaging system based on wheeled modulation in Embodiment 1, Figure 11 which is the flowchart of the single-pixel imaging method based on wheeled modulation provided by Embodiment 2 of the present invention. As Figure 11 shown, the method includes:

[0071] Step 110, dynamically modulate the target space through a modulation pattern that changes periodically through rotation.

[0072] Step 120, obtain the area corresponding to a single modulation pattern on the wheeled modulation device.

[0073] Step 130, detect an equal number of single-pixel detection values in the modulation area for each rotation period.

[0074] Step 140, receive the single-pixel detection values, and perform an association operation on all the modulation patterns and their corresponding single-pixel detection values within each rotation period to reconstruct the image of the target space.

[0075] The single-pixel imaging method based on wheeled modulation provided by Embodiment 2 of the present invention is a single-pixel imaging method based on the system in the above Embodiment 1. The method and technical effects of its implementation steps are similar and will not be elaborated here.

[0076] Embodiment III

[0077] Embodiment III of the present invention provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, any one of the single-pixel imaging methods based on wheel modulation provided in the above Embodiment II is implemented.

[0078] Embodiment IV

[0079] Embodiment IV of the present invention provides a computer device. Figure 12 It is a schematic structural diagram of the computer device provided in Embodiment IV of the present invention. As Figure 12 shown, it includes a memory 100, a processor 200, and a computer program stored on the memory. The processor executes the computer program to implement any one of the single-pixel imaging methods based on wheel modulation provided in the above Embodiment II.

[0080] Those skilled in the art should also be further aware that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of the two. To clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described according to functions in the above description. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present invention.

[0081] The steps of the methods or algorithms described in combination with the embodiments disclosed herein can be implemented by hardware, software modules executed by a processor, or a combination of the two. The software modules can be placed in a random access memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the technical field.

[0082] The specific embodiments described above further elaborate on the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only the specific embodiments of the present invention and is not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A single pixel imaging system based on wheel modulation, characterized in that: The system includes a wheel-type modulation device, a single-pixel detector, a modulation area acquisition module and a data processor; The wheel-type modulation device comprises a rotating motor and a wheel-type rotating base, wherein the rotating motor and the wheel-type rotating base are fixedly connected, a modulation pattern integrated into a long strip is arranged on the rim of the wheel-type rotating base, and the rotating motor drives the wheel-type rotating base provided with the modulation pattern to rotate periodically, and dynamically modulates the target space through the modulation pattern that changes periodically through rotation; The modulation area acquisition module is used to acquire the area corresponding to a single modulation pattern on the wheel modulation device; The single pixel detector is used to detect an equal number of single pixel detection values ​​in each rotation period modulation area; The data processor is used to receive single-pixel detection values, and perform correlation operations on all modulation patterns and their corresponding single-pixel detection values ​​in each rotation period to reconstruct an image of the target space.

2. The single pixel imaging system according to claim 1, characterized in that: The substrate of the modulation pattern is coated paper, and the modulation pattern is printed on the coated paper by printing.

3. The single pixel imaging system according to claim 2, characterized in that: The coated paper is adhered along the rim portion.

4. The single pixel imaging system according to claim 1, characterized in that: The wheeled rotating base is made of plastic.

5. The single pixel imaging system according to claim 1, characterized in that: The modulation pattern is a circulant S matrix, a Hadamard matrix, or a random matrix.

6. The single pixel imaging system according to claim 1, characterized in that: The dynamic modulation of the target space includes an active light field modulation method and a passive light field modulation method; wherein the active light field modulation method is that a light source illuminates a modulation area of ​​a modulation pattern on a wheeled rotating base, and the modulated light is reflected by the target object and received by a single-pixel detector; the passive light field modulation method is that a light source illuminates the target object, and the reflected light of the target object is imaged on the modulation area of ​​the modulation pattern on the wheeled rotating base through an imaging lens, and the modulated light is reflected by the modulation area and received by the single-pixel detector.

7. The single pixel imaging system according to claim 1, characterized in that: The rotating motor is a variable speed rotating motor.

8. The single pixel imaging system according to claim 1, characterized in that: The width of the rim is set according to the size of the imaging field of view.

9. The single pixel imaging system according to claim 2, characterized in that: The printing method is digital printing, laser printing or offset printing.

10. A single pixel imaging method based on wheel modulation, characterized in that: The method comprises: Dynamically modulating the target space by means of a modulation pattern that changes periodically through rotation; Acquire an area corresponding to a single modulation pattern on the wheel modulation device; Detecting an equal number of single-pixel detection values ​​in the modulation area per rotation period; The single-pixel detection value is received, and all modulation patterns and their corresponding single-pixel detection values ​​in each rotation period are correlated to reconstruct the image of the target space.

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