CMOS endoscopic imaging system and use method thereof

Abstract

The invention relates to the technical field of capsule endoscopes and image processing thereof, in particular to a CMOS (complementary metal oxide semiconductor) endoscopic imaging system and a using method thereof, and the CMOS endoscopic imaging system comprises a system circuit board, a CMOS image sensor, a lens assembly and a flash lamp assembly. The CMOS image sensor is arranged on the system circuit board. The CMOS image sensor is divided into independent working areas on the left side and the right side, and pixel arrays on the CMOS image sensor are configured to be a left pixel array and a right pixel array. The lens assembly is arranged on the CMOS image sensor. The lens assembly comprises a short-focus lens and a long-focus lens, the short-focus lens is located in the left independent working area and matched with the left pixel array, and the long-focus lens is located in the right independent working area and matched with the right pixel array. The flash lamp assembly is arranged on the system circuit board and is electrically connected to the global exposure control module. Multi-focal-length imaging of the capsule endoscope in a complex scene can be achieved, the accuracy of endoscopic imaging is improved, and the application range of endoscopic imaging is widened.

Description

Technical Field

[0001] The present application relates to the technical field of capsule endoscopes and image processing thereof, and in particular to a CMOS endoscope imaging system and a method for using the same. Background Art

[0002] With the continuous advancement of medical technology, minimally invasive surgery and non-invasive diagnostic technology are becoming increasingly popular. Endoscopic technology, as an important medical imaging method, has become a key tool in modern medical examinations and surgeries. Capsule endoscope is a miniaturized endoscopic device that can enter the human body through natural channels to examine internal organs such as the gastrointestinal tract without the need for traditional insertion operations, greatly reducing the pain and discomfort of patients. The development of this technology has greatly facilitated clinical diagnosis, especially in the early detection of diseases, improving the accuracy of diagnosis.

[0003] However, due to the small size of traditional capsule endoscopes, they are usually equipped with fixed-focus lenses with a single focal length, which means that they can only achieve clear imaging within a specific distance range. When the capsule endoscope moves in the body, the distance from the tissue changes continuously, resulting in unstable image clarity and inability to simultaneously obtain high-quality images at different distances, thus limiting its application in complex medical examinations.

[0004] In order to solve the limitations of fixed-focus lenses, a fixed-focus lens with a large depth of field was proposed. This design increases the depth of field of the lens, enabling it to provide clear images over a wider range of distances. However, although the fixed-focus and large depth of field solution expands the effective range of imaging, it can only provide clear images within a specific distance range due to the fixed focal length. Therefore, when the distance between the capsule endoscope and the target tissue changes, the image clarity and resolution will be significantly reduced, especially when shooting at long or close distances, image blur is prone to occur. This limitation makes it impossible for fixed-focus lenses to maintain high-quality imaging during movement.

[0005] In order to further improve the imaging effect, zoom lens technology has begun to be applied to capsule endoscopes. The zoom lens can change the focal length by adjusting the distance between the lenses, so as to flexibly focus within different distance ranges. Although this technology can cover a wider imaging range, its zoom lens requires a precise mechanical or electronic control mechanism, resulting in a complex optical structure, large size and weight, which limits its application in micro devices (such as capsule endoscopes). At the same time, the zoom process may cause the imaging speed to slow down, making it difficult to adapt to the needs of obtaining real-time high-resolution images.

[0006] In addition, current capsule endoscopes usually use local exposure or line-by-line scanning imaging methods, which can easily cause image blur or distortion in the case of rapid movement and cannot meet the needs of high-precision diagnosis. Therefore, how to achieve high-quality imaging with multiple focal lengths while maintaining the miniaturization of capsule endoscopes has become a difficult problem that needs to be solved urgently in the current technical field. Summary of the invention

[0007] The embodiments of the present application provide a CMOS endoscopic imaging system and a method for using the same, which solve the problem that it is difficult for current capsule endoscopes to clearly capture images at different distances at the same time.

[0008] In order to solve the above technical problems, this application is implemented as follows: In a first aspect, a CMOS endoscopic imaging system is provided, which includes a system circuit board, a CMOS image sensor, a lens assembly and a flash assembly. The CMOS image sensor is arranged on the system circuit board. The CMOS image sensor is divided into left and right independent working areas, and the pixel array on the CMOS image sensor is configured as a left pixel array and a right pixel array, the left pixel array is located in the left independent working area, and the right pixel array is located in the right independent working area. The lens assembly is arranged on the CMOS image sensor. The lens assembly includes a short-focus lens and a long-focus lens, the short-focus lens is located in the left independent working area and matches the left pixel array, and the long-focus lens is located in the right independent working area and matches the right pixel array. The flash assembly is arranged on the system circuit board and is electrically connected to a global exposure control module. The global exposure control module controls the flash assembly to simultaneously expose all pixel arrays on the CMOS image sensor, and the CMOS image sensor converts the optical signals of the left pixel array and the right pixel array into electronic signals and transmits them separately to the image processing unit.

[0009] In one embodiment, the CMOS image sensor is aligned with and soldered to a pad of a system circuit board, and the CMOS image sensor is located at a center of the system circuit board.

[0010] In one embodiment, the lens assembly further includes a lens cover, in which the short-focus lens and the long-focus lens are fixed, and the lens cover is disposed on the CMOS image sensor, and a surface of the lens cover is parallel and aligned with a surface of the system circuit board.

[0011] In one embodiment, the flash assembly includes a plurality of LED flashes, which are disposed on a system circuit board and located around a lens cover, and light emission directions of the plurality of LED flashes are aligned with an imaging direction of the lens assembly.

[0012] In one embodiment, the image processing unit processes the received image electronic signal through digital signal processing technology, and performs special optimization processing on images at different distances to improve contrast and clarity.

[0013] In a second aspect, a method for using the CMOS endoscopic imaging system of the first aspect is provided, which comprises the following steps: starting the capsule endoscope system, the CMOS image sensor and the flash assembly enter a standby state, and the capsule endoscope system simultaneously enters a self-test program to detect whether the functions of the various components of the endoscope are normal, and ensure that the device is in normal working condition; activating the global exposure mode, the capsule endoscope system analyzes the light conditions of the current environment, and automatically adjusts the brightness and duration of the flash assembly according to the analysis results; respectively collecting close-range and long-range images through the short-focus lens and the telephoto lens of the lens assembly, and sending the collected image signals to the image processing unit through an independent signal channel; the image processing unit processes the received images in real time, and integrates them to form the final image data.

[0014] In one of the embodiments, when the image processing unit processes the received image captured by the telephoto lens in real time, a high-pass filter is used to enhance the details of the image, and the contrast is adjusted by adaptive histogram equalization technology to improve the dynamic range and depth of the image.

[0015] In one of the embodiments, when the image processing unit processes the received image captured by the short-focus lens in real time, the digital signal processing algorithm performs edge enhancement on the image and uses edge detection technology to identify and highlight the edges and lines in the image.

[0016] In one of the embodiments, the image processing unit further includes applying a local contrast enhancement technology to process the image when processing the received image taken by the short-focus lens in real time, so as to improve the clarity and visibility of the image taken by the short-focus lens.

[0017] In an embodiment of the present application, a short-focus lens and a long-focus lens are provided on the CMOS image sensor, and the short-focus lens and the long-focus lens can realize the function of capturing close-range and long-range images at the same time, so that the problem of image quality degradation of a single focal length lens when the focal length changes can be avoided. At the same time, the CMOS image sensor is divided into independent working areas on the left and right sides, and images are respectively formed by the short-focus lens and the long-focus lens. Each lens uses a part of pixels for image acquisition, thereby ensuring that images of different distances are obtained at the same time. In this way, multi-focal length imaging of the capsule endoscope in complex scenes can be realized, the accuracy and scope of application of endoscopic imaging are improved, and the demand for obtaining clear images of different distances at the same time in medical diagnosis is met. While maintaining the imaging quality, the present application provides multi-mode imaging capabilities, solves the shortcomings of the existing single focal length and zoom lens systems, and provides a better imaging solution for medical equipment, especially capsule endoscopes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 It is a schematic diagram of the structure of the CMOS endoscopic imaging system of the present application; Figure 2 It is a flowchart of the steps of the method for using the CMOS endoscopic imaging system of the present application.

[0019] The following is a description with reference to the accompanying drawings: 1: CMOS endoscopy imaging system; 2: system circuit board; 3: CMOS image sensor; 4: lens assembly; 41: short-focus lens; 42: long-focus lens; 43: lens cover; 5: flash assembly; 51: LED flash. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0021] See also Figure 1, which is a structural schematic diagram of the CMOS endoscopic imaging system of the present application; as shown in the figure, the CMOS endoscopic imaging system 1 of the present embodiment includes a system circuit board 2, a CMOS image sensor 3, a lens assembly 4 and a flash assembly 5. The system circuit board 2 is used to support and connect all components of the imaging system. The lens assembly 4 includes a short-focus lens 41 and a long-focus lens 42. The CMOS image sensor 3 is arranged on the system circuit board 2. The system circuit board 2 is engraved with the system circuit board 2. In this embodiment, the CMOS image sensor 3 is aligned with the pads of the system circuit board 2 and welded together to ensure the reliability of the electrical connection. The CMOS image sensor 3 is located at the center of the system circuit board 2. At the same time, after welding, it is also necessary to ensure that the CMOS image sensor 3 is located at the core position of the capsule endoscope and is firmly fixed to prevent loosening or displacement during use, thereby ensuring the stability of imaging. The CMOS image sensor 3 is a technology widely used in image sensors, which is responsible for converting optical signals into electrical signals to achieve image acquisition. The CMOS image sensor 3 is divided into independent working areas on the left and right sides. The pixel array on the CMOS image sensor 3 is configured as a left pixel array and a right pixel array. The left pixel array is located in the left independent working area, and the right pixel array is located in the right independent working area. In this embodiment, the left pixel array in the left independent working area.

[0022] The lens assembly 4 is arranged on the CMOS image sensor 3. The lens assembly 4 includes a short-focus lens 41 and a long-focus lens 42. In this embodiment, the lens assembly 4 also includes a lens cover 43, in which the short-focus lens 41 and the long-focus lens 42 are fixed, and the lens cover 43 is arranged on the CMOS image sensor 3. The surface of the lens cover 43 is parallel and aligned with the surface of the system circuit board 2 to ensure the quality of imaging. The short-focus lens 41 is located in the left independent working area and matches the left pixel array. In this way, the left independent working area is equipped with a short-focus lens, which focuses on close-range imaging, and the optical design of the short-focus lens emphasizes the clarity and accuracy of the image, ensuring that the details of close-range objects can be accurately captured. At the same time, the left pixel array matches the short-focus lens to specifically process close-range images. The telephoto lens 42 is located in the right independent working area and matches the right pixel array. In this way, the right independent working area is equipped with a telephoto lens for capturing long-distance images, and the optical system of the telephoto lens has been carefully optimized, which can not only accurately focus on distant targets, but also improve the imaging quality by reducing aberrations and distortions. At the same time, the right pixel array matches the telephoto lens to optimize long-distance imaging. This embodiment not only maximizes the photosensitive area of ​​the CMOS image sensor 3 through this partition design, but also ensures the specificity and efficiency of image processing, and the image signal of each area is sent to the image processing unit through an independent channel, so that even if close-range and long-distance shooting are performed at the same time, signal interference can be avoided and the highest clarity of the image can be maintained.

[0023] The flash assembly 5 is arranged on the system circuit board 2 and is electrically connected to the global exposure control module. In this embodiment, the flash assembly 5 includes a plurality of LED flashes 51, which are arranged on the system circuit board 2 and are located on the peripheral side of the lens cover 43, and the light emission direction of the plurality of LED flashes 51 is aligned with the imaging direction of the lens assembly 4 to ensure the uniformity of the illumination. The global exposure control module controls the flash assembly 5 to simultaneously expose all pixel arrays on the CMOS image sensor 3, and the CMOS image sensor 3 converts the optical signals of the left pixel array and the right pixel array into electronic signals and transmits them separately to the image processing unit. The image processing unit processes the received image electronic signals through digital signal processing (DSP) technology, and performs special optimization processing on images at different distances to improve the contrast and clarity. By controlling the plurality of LED flashes 51 to simultaneously expose all pixel arrays on the CMOS image sensor 3, the image distortion and blurring problems that may be caused by the traditional rolling shutter can be effectively avoided, which can not only ensure the stability and clarity of the image, but also solve the imaging inconsistency problem caused by the movement of the capsule endoscope or the dynamic change of the object.

[0024] The CMOS endoscopic imaging system 1 of this embodiment is provided with a short-focus lens 41 and a long-focus lens 42 on the CMOS image sensor 3. The short-focus lens 41 and the long-focus lens 42 can realize the function of capturing close-range and long-range images at the same time, so that the problem of image quality degradation of a single focal length lens when the focal length changes can be avoided. At the same time, the CMOS image sensor 3 is divided into independent working areas on the left and right sides, and images are respectively formed by the short-focus lens 41 and the long-focus lens 42. Each lens uses a part of pixels for image acquisition, thereby ensuring that images at different distances are obtained at the same time. In this way, multi-focal imaging of the capsule endoscope in complex scenes can be realized, the accuracy and scope of application of endoscopic imaging are improved, and the demand for obtaining clear images at different distances at the same time in medical diagnosis is met. In addition, this embodiment also controls the flash assembly 5 to simultaneously expose all pixel arrays on the CMOS image sensor 3 through the global exposure control module to improve image quality. Therefore, the CMOS endoscopic imaging system 1 of this embodiment can provide multi-mode imaging capabilities while maintaining imaging quality, solving the shortcomings of existing single-focal-length and zoom lens systems, and providing a better imaging solution for medical equipment, especially capsule endoscopes.

[0025] See also Figure 2 Also see Figure 1 As shown, Figure 2 : is a flowchart of the steps of the method for using the CMOS endoscopic imaging system of the present application; as shown in the figure, this embodiment is a method for using the above-mentioned CMOS endoscopic imaging system. The method for using the CMOS endoscopic imaging system includes the following steps S1 to S4. Among them: Step S1, start the device: start the capsule endoscope system, the CMOS image sensor 3 and the flash unit 5 enter the standby state, ready for imaging. The capsule endoscope system also enters the self-test program to detect whether the functions of each component of the endoscope are normal to ensure that the device is in normal working condition.

[0026] Step S2, turn on the global exposure mode: When the global exposure mode is activated, the capsule endoscope system analyzes the light conditions of the current environment and automatically adjusts the brightness and duration of the flash assembly 5 according to the analysis results to ensure that the best imaging quality can be obtained regardless of the lighting environment.

[0027] Step S3, image acquisition: The short-focus lens 41 and the long-focus lens 42 of the lens assembly 4 respectively acquire close-range and long-range images, and send the acquired image signals to the image processing unit through independent signal channels to avoid signal interference and ensure high efficiency and stability of data transmission.

[0028] Step S4, image processing: The image processing unit processes the received image in real time, and integrates these image signals to form the final image data. When the image processing unit processes the image taken by the telephoto lens 42 in real time, the DSP uses a high-pass filter to enhance the details of the image, improve the visibility of the subtle parts of the image, and adjust the contrast through the adaptive histogram equalization technology to improve the dynamic range and depth of the image. Then, the contrast is adjusted using the adaptive histogram equalization technology to improve the dynamic range and depth of the image and ensure the clarity of long-distance imaging. When the image processing unit processes the image taken by the short-focus lens 41 in real time, the DSP algorithm enhances the edge of the image and uses the edge detection technology to identify and highlight the edges and lines in the image. In addition, the local contrast enhancement technology is also used to process the image to improve the clarity and visibility of the image taken by the short-focus lens 41. These processed image signals are fused to generate the final image data.

[0029] The following describes in detail how to install a dual fixed-focus lens on a CMOS image sensor and realize a multi-focal length imaging function in combination with the specific implementation steps of this application. 1. Material Preparation 1) CMOS image sensor: The two ends of the CMOS image sensor are lens installation areas, and the center is the image acquisition area.

[0030] 2) Telephoto lens: used to capture long-distance images, with a fixed-focus lens with a focal length of 12mm.

[0031] 3) Short-focus lens: used to capture close-range images, with a fixed-focus lens of 4mm focal length.

[0032] 4) Lens hood: used to fix the telephoto lens and short focal length lens and ensure that they are aligned with the CMOS sensor.

[0033] 5) AA camera: used to accurately align and fix the position of the lens.

[0034] 6) UV glue (ultraviolet light curing glue): used to fix the lens cover on the CMOS sensor. The UV glue needs to be cured by ultraviolet light, and the curing time is about 30 seconds.

[0035] 7) LED flash module: used to provide the lighting required for imaging and can work synchronously with the global exposure control system of the CMOS sensor.

[0036] 2. Lens installation steps 2.1 Lens alignment and fixation 1) Mount the lens to the lens hood: 2) Fix the telephoto lens (12mm focal length) and short focal lens (4mm focal length) on the left and right sides of the lens hood respectively. Make sure the position and angle of the lens are consistent with the design requirements of the lens hood.

[0037] 3) Align the lens hood with the CMOS sensor: 4) Place the CMOS image sensor on the fixed platform of the AA machine and ensure that the sensor surface is clean and dust-free.

[0038] 5) Use the AA camera to align the lens hood with the CMOS image sensor so that the telephoto lens and short focal lens are located at the left and right mounting areas of the CMOS sensor respectively. The AA camera can provide precise positioning to ensure that the lens is parallel to the CMOS surface and the focus point is aligned with the pixel array of the sensor.

[0039] 6) Lens hood bonding: (6.1) Apply a layer of UV glue (ultraviolet light curing glue) evenly on the bottom of the lens cover. Be careful not to apply too much to prevent overflow and affect the image quality.

[0040] (6.2) Use the AA machine to gently press the lens cover coated with UV glue onto the CMOS sensor. Maintain the pressure and use a UV lamp to irradiate the UV glue for 30 seconds. Make sure that the UV glue is completely cured before releasing the pressure.

[0041] 2.2 Curing After exposure to UV light, the UV glue will cure within 30 seconds, ensuring a strong connection between the lens cover and the CMOS sensor.

[0042] 3. LED flash installation 3.1 LED module positioning: LED flash module welding: Solder the LED flash module to the system board of the capsule endoscope. The LED flash has adjustable light intensity and duration to ensure that the LED light can be evenly illuminated on the light path through the lens.

[0043] 3.2 Electrical connection: Connect the control module: Connect the LED flash module to the global exposure control system of the CMOS sensor to ensure that the LED flash can work synchronously with the exposure process during image acquisition.

[0044] 4. System assembly and testing 4.1 System Assembly: Embedding into capsule endoscope: Embed the assembled CMOS sensor and lens module and LED flash module into the shell of the capsule endoscope. Make sure all components are firmly fixed and do not affect the overall shape and size of the capsule.

[0045] 4.2 System Testing Power on: Start the power of the capsule endoscope and check the working status of the CMOS sensor and LED flash module.

[0046] Imaging test: Simulate the use scenario of capsule endoscope in the experimental environment to test the imaging effect at close and long distances. Check the imaging quality in real time through the image processing unit to ensure that the two lenses can capture clear images at different distances at the same time.

[0047] 4.3 Adjustment and Optimization Light intensity adjustment: According to the test results, adjust the light intensity or exposure time of the LED flash if necessary to optimize the image quality.

[0048] Lens alignment correction: If alignment deviation is found during lens installation, the lens can be realigned through the AA machine and the exposure time of UV glue can be adjusted appropriately.

[0049] 5. Instructions for use 5.1 Usage Use of capsule endoscope: After the patient swallows the capsule endoscope, the long-focus and short-focus lenses in the capsule will collect images at long and short distances respectively, and send the images to an external device via wireless transmission for the doctor's diagnosis.

[0050] 5.2 Notes Lens cleaning: Before use, make sure all lens surfaces are clean to avoid stains or fingerprints that may affect image quality.

[0051] Battery check: Check whether the battery power is sufficient to ensure the smooth progress of the entire inspection process.

[0052] In summary, the present application provides a CMOS endoscopic imaging system and a method for using the same. The present application provides a short-focus lens and a long-focus lens on the CMOS image sensor. The short-focus lens and the long-focus lens can realize the function of capturing close-range and long-distance images at the same time. In this way, the problem of image quality degradation of a single focal length lens when the focal length changes can be avoided. At the same time, the CMOS image sensor is divided into independent working areas on the left and right sides, and images are respectively formed by the short-focus lens and the long-focus lens. Each lens uses a part of the pixels for image acquisition, thereby ensuring that images at different distances are obtained at the same time. In this way, multi-focal length imaging of capsule endoscopes in complex scenes can be realized, the accuracy and scope of application of endoscopic imaging are improved, and the need for simultaneously obtaining clear images at different distances in medical diagnosis is met. While maintaining the imaging quality, the present application provides multi-mode imaging capabilities, solves the shortcomings of existing single-focal length and zoom lens systems, and provides a better imaging solution for medical equipment, especially capsule endoscopes.

[0053] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0054] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A CMOS endoscopic imaging system, characterized in that: include: System circuit board; A CMOS image sensor is disposed on the system circuit board, the CMOS image sensor is divided into left and right independent working areas, a pixel array on the CMOS image sensor is configured as a left pixel array and a right pixel array, the left pixel array is located in the left independent working area, and the right pixel array is located in the right independent working area; The lens assembly is arranged on the CMOS image sensor and comprises: The short-focus lens is located in the left independent working area and matches the left pixel array. A telephoto lens, located in the right independent working area and matched with the right pixel array; A flash assembly is disposed on the system circuit board and is electrically connected to a global exposure control module. The global exposure control module controls the flash assembly to simultaneously expose all pixel arrays on the CMOS image sensor. The CMOS image sensor converts light signals of the left pixel array and the right pixel array into electronic signals and transmits them separately to an image processing unit.

2. The CMOS endoscopic imaging system according to claim 1, characterized in that: The CMOS image sensor is aligned with and soldered to the pads of the system circuit board, and the CMOS image sensor is located at the center of the system circuit board.

3. The CMOS endoscopic imaging system according to claim 1, characterized in that: The lens assembly further comprises a lens cover, the short-focus lens and the long-focus lens are fixed in the lens cover, the lens cover is arranged on the CMOS image sensor, and the surface of the lens cover is parallel and aligned with the surface of the system circuit board.

4. The CMOS endoscopic imaging system according to claim 3, characterized in that: The flash assembly comprises a plurality of LED flashes, which are arranged on the system circuit board and located around the lens cover, and the light emission directions of the plurality of LED flashes are aligned with the imaging direction of the lens assembly.

5. The CMOS endoscopic imaging system according to claim 1, characterized in that: The image processing unit processes the received image electronic signals through digital signal processing technology, and performs special optimization processing on images at different distances to improve contrast and clarity.

6. A method for using the CMOS endoscopic imaging system according to any one of claims 1 to 5, characterized in that: The following steps are involved: The capsule endoscope system is started, the CMOS image sensor and the flash lamp assembly enter a standby state, and the capsule endoscope system simultaneously enters a self-checking program to detect whether the functions of various components of the endoscope are normal, so as to ensure that the device is in a normal working state; Activating the global exposure mode, the capsule endoscopy system analyzes the light conditions of the current environment and automatically adjusts the brightness and duration of the flash assembly according to the analysis results; The short-focus lens and the long-focus lens of the lens assembly respectively collect images at a short distance and a long distance, and send the collected image signals to the image processing unit through independent signal channels; The image processing unit processes the received images in real time and integrates them to form the final image data.

7. The method of use according to claim 6, characterized in that: When the image processing unit processes the received image captured by the telephoto lens in real time, it uses a high-pass filter to enhance the details of the image and adjusts the contrast through an adaptive histogram equalization technique to improve the dynamic range and depth of the image.

8. The method of use according to claim 6, characterized in that: When the image processing unit processes the received image shot by the short-focus lens in real time, the digital signal processing algorithm performs edge enhancement on the image and uses edge detection technology to identify and highlight the edges and lines in the image.

9. The method of use according to claim 8, characterized in that: When the image processing unit processes the received image taken by the short-focus lens in real time, it also includes applying a local contrast enhancement technology to process the image to improve the clarity and visibility of the image taken by the short-focus lens.

Images