Handheld vision enhancement detection device
By using high-speed imaging technology with active laser light sources and high-sensitive cameras in vision enhancement detectors, the problems of poor imaging quality, poor environmental adaptability and slow response in complex environments are solved, and efficient three-dimensional target imaging and fast response are achieved.
Patent Information
- Application Number
- CN202411690860.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-03-07
AI Technical Summary
Existing vision enhancement detectors have poor imaging quality, poor environmental adaptability and slow response in complex environments.
A handheld vision enhancement detection device is designed, using a high-speed imaging technology of an active laser light source combined with a high-sensitive camera to achieve long-distance, high-resolution three-dimensional target imaging. The device generates gate pulses to improve imaging quality by controlling the emission energy and pulse width of the laser emitter, combined with the exposure time of the highly sensitive camera.
It improves the imaging quality and response speed in complex environments, enhances environmental adaptability, and can meet the needs of the ship industry such as emergency, search and rescue, detection, and protection of important places.
Smart Images
Figure CN119583925A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of optical imaging technology, and in particular to a handheld vision enhancement detection device. Background Art
[0002] Visual enhancement detector is a device specially designed to improve image quality and visibility, and is widely used in security monitoring, military reconnaissance, medical imaging, traffic monitoring and other fields. Its main function is to improve the acquisition of visual information in low light, strong light or complex environments through various technical means.
[0003] Visual enhancement detectors are usually equipped with a variety of imaging technologies, such as infrared imaging and low-light imaging, which enable them to capture clear images in almost completely dark environments or under strong backlight conditions. Infrared imaging uses the thermal radiation emitted by objects to generate images, which is suitable for night monitoring and search and rescue missions; while low-light imaging technology improves the sensitivity of the sensor to effectively capture weak light sources. However, both infrared imaging and low-light imaging are passive imaging technologies. However, since passive imaging technology may interfere with imaging in complex environments, resulting in difficulty in target recognition, and in low-light environments, imaging may have insufficient contrast, making it difficult to distinguish details, active imaging technology has developed rapidly.
[0004] Active imaging technology is an imaging method that acquires images or information by emitting signals (e.g., lasers or sound waves) and receiving reflected signals. Unlike passive imaging technology (e.g., ordinary photography, which relies on natural light), active imaging is able to work in low-light or complex environments and has higher sensitivity and accuracy.
[0005] Most existing active imaging technologies rely on continuous wave lasers or low-frequency pulsed lasers. Although they have been successful in some applications, their target recognition and tracking capabilities are limited in complex environments, especially in the field of ships. In particular, in strong light, dense fog or underwater environments, the imaging quality is easily affected by scattering and absorption, resulting in poor imaging quality, poor environmental adaptability and slow response. Summary of the invention
[0006] To this end, the present application provides a handheld vision enhancement detection device to solve the problems of poor imaging quality, poor environmental adaptability and slow response of existing vision enhancement detectors in complex environments.
[0007] In order to achieve the above objectives, this application provides the following technical solutions:
[0008] A handheld vision enhancement detection device, comprising a shell, the shell comprising a handheld part and a detection part, the handheld part is fixedly connected to the side of the detection part, a display screen and an operation button are fixedly arranged in front of the detection part, a laser emitter lens and a visible light lens are fixedly arranged at the back of the detection part, a high-sensitivity camera, a laser emitter and a control circuit are fixedly arranged inside the detection part, the lens of the high-sensitivity camera faces the visible light lens, the emission end of the laser emitter faces the laser emitter lens, a power button is arranged at the back of the handheld part near the detection part, and a focus adjustment button is arranged on the side where the detection part is connected to the handheld part;
[0009] The display screen, the operation button, the highly sensitive camera, the laser emitter and the power button are all electrically connected to the control circuit, and the focus adjustment button is electrically connected to the highly sensitive camera; the control circuit is used to adjust the emission energy and pulse width of the laser emitter according to the target distance, and generate a gating pulse according to the target distance, and then control the laser emitter to emit laser pulses to the target, and control the exposure time of the highly sensitive camera according to the gating pulse; the highly sensitive camera collects the target image and sends it to the control circuit, and the control circuit processes the target image and outputs an imaging result and a recognition signal.
[0010] Preferably, the highly sensitive camera is an ICCD detector.
[0011] Preferably, the laser transmitter adopts a high-frequency pulse laser.
[0012] Preferably, the control circuit is a FPGA control circuit.
[0013] Preferably, the gating pulse is a nanosecond level gating pulse.
[0014] Preferably, the control circuit processes the target image including denoising, enhancement, segmentation, multi-band image fusion, multi-modal image fusion, feature extraction and target classification.
[0015] Preferably, it further comprises a power supply battery, wherein the power supply battery is installed inside the handheld part and the power supply battery is electrically connected to the control circuit.
[0016] Preferably, the operation buttons include confirmation, brightness -\left page turn, brightness +\right page turn, album\distance adjustment and video recording.
[0017] Compared with the prior art, this application has at least the following beneficial effects:
[0018] The present application provides a handheld vision enhancement detection device, including a shell, the shell including a handheld part and a detection part, the handheld part is fixedly connected to the side of the detection part, a display screen and an operation button are fixedly arranged in front of the detection part, a laser emitter lens and a visible light lens are fixedly arranged at the back of the detection part, a highly sensitive camera, a laser emitter and a control circuit are fixedly arranged inside the detection part, the lens of the highly sensitive camera faces the visible light lens, the transmitting end of the laser emitter faces the laser emitter lens, a power button is arranged at the back of the handheld part near the detection part, and a focus adjustment button is arranged on the side where the detection part is connected to the handheld part. The handheld vision enhancement detection device provided by the present application adopts an active laser light source combined with the high-speed imaging technology of a highly sensitive camera to realize long-distance, high-resolution three-dimensional target imaging technology, improves its imaging quality and response speed in complex environments, enhances its environmental adaptability, and can meet the needs of emergency response, search and rescue, detection, and key point protection in the shipping industry. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more intuitively illustrate the prior art and the present application, exemplary drawings are given below. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing the present application; for example, those skilled in the art are capable of easily making conventional adjustments or further optimizations to the addition / reduction / attribution division, specific shapes, positional relationships, connection methods, dimensional ratios, etc. of certain units (components) based on the technical concepts and exemplary drawings disclosed in the present application.
[0020] Figure 1 A front structural schematic diagram of a handheld vision enhancement detection device provided in this application;
[0021] Figure 2 A schematic diagram of the rear structure of a handheld vision enhancement detection device provided in this application;
[0022] Figure 3 A schematic diagram of the structure of a handheld vision enhancement detection device provided by the present application after the front shell is disassembled;
[0023] Figure 4 This is a schematic diagram of the structure of a handheld vision enhancement detection device provided in the present application after the side shell is disassembled.
[0024] Description of reference numerals:
[0025] 1. Handheld part; 101. Power button; 102. Power supply battery; 2. Detection part; 201. Display screen; 202. Operation button; 203. Laser emitter lens; 204. Visible light lens; 205. Focus adjustment button; 206. Control circuit; 207. Laser emitter; 208. High-sensitivity camera. DETAILED DESCRIPTION
[0026] The present application is further described below in detail through specific embodiments in conjunction with the accompanying drawings.
[0027] In the description of this application: unless otherwise specified, the meaning of "plurality" is two or more. The terms "first", "second", "third", etc. in this application are intended to distinguish the objects referred to, and do not have special meanings in terms of technical connotations (for example, they should not be understood as emphasizing the importance or order, etc.). Expressions such as "including", "comprising", "having", etc. also mean "not limited to" (certain units, components, materials, steps, etc.).
[0028] The terms such as "upper", "lower", "left", "right", "middle", etc. cited in this application are usually used to indicate the general relative position relationship for the purpose of intuitive understanding by referring to the drawings, and are not absolute limitations on the position relationship in the actual product.
[0029] See also Figures 1 to 4 The present application provides a handheld vision enhancement detection device, including a shell, the shell including a handheld part 1 and a detection part 2, the handheld part 1 is fixedly connected to the side of the detection part 2, a display screen 201 and an operation button 202 are fixedly arranged in front of the detection part 2, a laser emitter lens 203 and a visible light lens 204 are fixedly arranged at the back of the detection part 2, a high-sensitivity camera 208, a laser emitter 207 and a control circuit 206 are fixedly arranged inside the detection part 2, the lens of the high-sensitivity camera 208 faces the visible light lens 204, the emitting end of the laser emitter 207 faces the laser emitter lens 203, a power button 101 is arranged at the back of the handheld part 1 near the detection part 2, and a focus adjustment button 205 is arranged on the side where the detection part 2 is connected to the handheld part 1.
[0030] Among them, the display screen 201, the operation button 202, the high-sensitivity camera 208, the laser transmitter 207 and the power button 101 are all electrically connected to the control circuit 206, the focus adjustment button 205 is electrically connected to the high-sensitivity camera 208, the control circuit 206 is an FPGA (field programmable gate array) control circuit, and the operation button 202 includes confirmation, brightness-\left page, brightness+\right page, album\distance adjustment and video recording buttons.
[0031] Specifically, in a handheld vision-enhanced detection device provided by the present application, the laser transmitter 207 adopts a high-frequency pulse laser. The high-frequency pulse laser is a laser with a high repetition rate and a short pulse width. The present application can reduce environmental interference and enhance the penetration and recognition accuracy of the target by precisely controlling the energy and timing of each pulse.
[0032] Specifically, in a handheld visual enhancement detection device provided by the present application, the highly sensitive camera 208 is an ICCD detector, and the ICCD detector is integrated with a highly sensitive and high-speed imaging technology. The present application can precisely control the highly sensitive camera 208, combined with a high-precision time synchronization algorithm, and only turn on the laser pulse at the moment it reaches the target and is reflected back, thereby effectively suppressing background noise and stray light and improving image contrast.
[0033] Specifically, the handheld vision-enhanced detection device provided in the present application further includes a power supply battery 102 , which is installed inside the handheld part 1 , and the power supply battery 102 is electrically connected to the control circuit 206 .
[0034] Working principle:
[0035] In a handheld vision-enhanced detection device provided by the present application, a control circuit 206 is used to adjust the emission energy and pulse width of a laser emitter 207 according to the target distance, and to generate a gating pulse according to the target distance, and then to control the laser emitter 207 to emit laser pulses toward the target, and to control the exposure time of a high-sensitivity camera 208 according to the gating pulse; the high-sensitivity camera 208 captures the target image and sends it to the control circuit 206, which processes the target image and outputs an imaging result and a recognition signal.
[0036] Specifically:
[0037] A handheld vision enhancement detection device provided in the present application requires system initialization before use. The initialization includes checking whether the hardware devices such as the laser emitter 207, ICCD detector and FPGA control circuit are working properly, ensuring that all devices are connected correctly and the power supply is stable, and then setting parameters, initializing the control circuit 206 and target positioning.
[0038] Parameter settings:
[0039] 1. According to the target environment and imaging requirements, set the emission energy, wavelength, pulse width and other parameters of the laser emitter 207;
[0040] 2. Setting the gain, integration time and other parameters of the high-sensitivity camera 208;
[0041] 3. Set the gate width, delay time and other parameters of the FPGA control circuit.
[0042] Initialization control circuit 206:
[0043] 1. Initialize the FPGA control circuit and load the gating control logic;
[0044] 2. Initialize the sensitive detector control circuit and load the imaging control logic.
[0045] Target positioning:
[0046] 1. Obtain target location information: Obtain the approximate location information of the target through the positioning system; if the target itself carries a positioning system, such as GPS or rangefinder, directly obtain the target's precise location information.
[0047] 2. Based on the target position information, calculate the distance between the target and the imaging system.
[0048] After the equipment system is initialized, work is performed:
[0049] The control circuit 206 adjusts the emission energy and pulse width of the laser emitter 207 according to the target distance information to ensure that the laser pulse can reach the target and return, and then controls the laser emitter 207 to emit laser pulses to illuminate the target; at the same time, the control circuit 206 generates nanosecond-level gating pulses according to the target distance information, and then accurately controls the exposure time of the high-sensitivity camera 208 according to the gating pulse to achieve imaging of targets at a specific distance; the high-sensitivity camera 208 receives the laser signal reflected from the target, and converts the received laser signal into an electrical signal to obtain a captured target image, and transmits the target image to the control circuit 206; after receiving the captured target image, the control circuit 206 performs image processing, data fusion and target recognition on the target image, and then outputs the imaging result and recognition signal.
[0050] Among them, image processing includes denoising, enhancement and segmentation. Denoising the collected target image can improve the image quality, enhancing the collected target image can highlight the target features, and segmenting the collected target image can extract the target area.
[0051] Data fusion includes multi-band image fusion and multi-modal image fusion. If the system has multi-band imaging capabilities, images of different bands will be fused to obtain more comprehensive observation data; if the system has multi-modal imaging capabilities, images of different modalities will be fused to obtain more comprehensive observation data.
[0052] Target recognition includes feature extraction and target classification. Feature extraction uses the results of image processing and analysis to extract the target's feature information; target classification classifies and identifies the target based on the extracted feature information.
[0053] After the imaging results and recognition signals are output, they are sent to users or other systems for further analysis and decision-making.
[0054] The handheld vision enhancement detection device provided in the present application can also monitor the imaging quality (such as image clarity, signal-to-noise ratio, etc.) and the system status (such as hardware device working status, software running status, etc.) in real time, and adjust the parameters such as the laser emitter 207, the high-sensitivity camera 208, and the FPGA control circuit in real time according to the monitoring results to ensure the imaging effect.
[0055] Directions:
[0056] Power on and off: When starting up, press the power button 101 to turn on the power, and the handheld vision enhancement detection device icon will appear after the startup screen is displayed. Press the power button 101 again to rebound, and shut down the handheld vision enhancement detection device normally.
[0057] Quick measurement: Turn on the handheld vision enhancement detection device, press the power button 101 to turn on the power, wait for the handheld vision enhancement detection device to start up and the main page to appear; then point the lens at the object to be measured, and the detection image of the object to be measured will be displayed on the display screen 201.
[0058] Recording: Turn on the handheld visual enhancement detection device, press the "Record" button to record the current detection screen, press the "Record" button again to stop recording, and save the recorded screen to the memory card. Long press the "Album\Distance Adjustment" button to enter the album to view the saved videos; press the "Brightness-\Left Page" and "Brightness+\Right Page" buttons to select the video; press the "Confirm" button to play.
[0059] Adjust brightness: Press the "Brightness -\Left Page" and "Brightness +\Right Page" buttons to adjust the brightness to suit different detection environments.
[0060] Adjust the distance: Press the "Album\Distance Adjustment" button to adjust the distance. There are three distance options: "Near", "Medium" and "Far".
[0061] Adjusting the focal length: Turn the roller of the focal length adjustment key 205 to adjust the focal length.
[0062] Export video: Turn off the handheld visual enhancement detection device. When it is turned off, take out the memory card and connect it to the computer. A USB drive letter will appear on the computer. At this time, you can choose to copy the video to the computer.
[0063] The handheld vision enhancement detection device provided in this application utilizes active laser imaging technology to achieve high-precision three-dimensional imaging under high-interference conditions by precisely controlling a high-frequency narrow-pulse laser beam and combining it with an advanced high-sensitivity photosensitivity imaging algorithm. It has the following advantages:
[0064] (1) Improved imaging quality: The imaging clarity and stability in complex environments are significantly enhanced, which is especially suitable for the detection and identification of small and dark targets.
[0065] (2) Enhanced environmental adaptability: It can effectively penetrate strong light, smoke, water and other media, expanding the scope of application.
[0066] (3) Improved real-time performance: The fast data processing algorithm ensures the system's real-time imaging capability, which is suitable for dynamic monitoring and rapid response needs.
[0067] (4) Energy saving and high efficiency: By optimizing the laser emission frequency and energy management strategy, the overall system energy consumption is reduced and the endurance is improved, making it suitable for field operations or long-term monitoring tasks.
[0068] (5) Through special internal and surface processing technology, it can meet the special needs of the shipbuilding industry such as emergency response, search and rescue, detection, and key point protection, such as salt resistance, waterproofness, and wind and sand resistance.
[0069] The technical features of the above embodiments may be arbitrarily combined (as long as there is no contradiction in the combination of these technical features). To make the description concise, not all possible combinations of the technical features in the above embodiments are described; these embodiments that are not explicitly written should also be considered to be within the scope of this specification.
Claims
1. A handheld visual enhancement detection device, characterized in that: The invention comprises a housing, wherein the housing comprises a handheld part and a detection part, the handheld part is fixedly connected to the side of the detection part, a display screen and an operation button are fixedly arranged in front of the detection part, a laser emitter lens and a visible light lens are fixedly arranged at the back of the detection part, a highly sensitive camera, a laser emitter and a control circuit are fixedly arranged inside the detection part, the lens of the highly sensitive camera faces the visible light lens, the transmitting end of the laser emitter faces the laser emitter lens, a power button is arranged at the back of the handheld part near the detection part, and a focus adjustment button is arranged at the side where the detection part is connected to the handheld part; The display screen, the operation button, the highly sensitive camera, the laser emitter and the power button are all electrically connected to the control circuit, and the focus adjustment button is electrically connected to the highly sensitive camera; the control circuit is used to adjust the emission energy and pulse width of the laser emitter according to the target distance, and generate a gating pulse according to the target distance, and then control the laser emitter to emit laser pulses to the target, and control the exposure time of the highly sensitive camera according to the gating pulse; the highly sensitive camera collects the target image and sends it to the control circuit, and the control circuit processes the target image and outputs an imaging result and a recognition signal.
2. The handheld vision-enhanced detection device according to claim 1, characterized in that: The highly sensitive camera is an ICCD detector.
3. The handheld vision-enhanced detection device according to claim 1, characterized in that: The laser transmitter adopts a high-frequency pulse laser.
4. The handheld vision-enhanced detection device according to claim 1, characterized in that: The control circuit is an FPGA control circuit.
5. The handheld vision-enhanced detection device according to claim 1, characterized in that: The strobe pulse is a nanosecond-level strobe pulse.
6. The handheld vision-enhanced detection device according to claim 1, characterized in that: The control circuit processes the target image including denoising, enhancement, segmentation, multi-band image fusion, multi-modal image fusion, feature extraction and target classification.
7. The handheld vision-enhanced detection device according to claim 1, characterized in that: It also includes a power supply battery, which is installed inside the handheld part and is electrically connected to the control circuit.
8. The handheld vision-enhanced detection device according to claim 1, characterized in that: The operation buttons include confirmation, brightness-\left page turn, brightness+\right page turn, album\distance adjustment and video recording.