33 results about "Image intensification" patented technology

The invention provides a noise modeling and denoising method for a low-light-level image intensifier. The noise modeling and denoising method comprises the following steps: step 1, establishing an imaging noise model for the low-light-level image intensifier; step 2, collecting output data of the low-light image intensifier under different illumination conditions, calibrating parameters of an imaging noise model, and superposing the calibrated imaging noise model on a noise-free image sample to construct a training data set conforming to actual imaging characteristics; step 3, designing an image denoising network based on the convolutional neural network, the input of the network being a noise-containing image, and the output being a noise-suppressed clean image; and step 4, training and optimizing the convolutional neural network based on the training data set, and verifying synthetic data and real data. According to the method, the adaptive capacity and generalization performance of the neural network to complex noise can be effectively enhanced, and finally, more accurate and stable image enhancement and denoising effects can be realized in a low-light imaging scene.

The application provides a kind of steel band surface defect multispectral fusion high-speed detection device and detection method, belong to steel band surface defect detection technical field, including foundation and main support, the main support is door type structure, across the both sides of steel band production equipment, bottom is connected with foundation using embedded bolt.The application is irradiated to steel band surface by LED array light source respectively using white, ultraviolet light and red light source, and the image of steel band surface after being irradiated by different light sources is collected using CCD camera respectively, so that when image recognition is carried out, the image of white light source is identified according to the brightness of reflected light, the defect of different depth is identified, the image of ultraviolet light source is identified by shortening wavelength to break through diffraction limit, the resolution and contrast of surface defect detection are improved;The image of red light source enhances the color development effect of small scratch on metal surface;Through the image recognition of different light colors, the detection and recognition accuracy can be effectively improved, and the influence of sundries and reflection on detection result is reduced.

We present a ground-based laser system for searching, ranging, and tracking that actively illuminates small resident space objects (RSOs) in low Earth orbit (LEO) and observes position and transit-time of reflections, enabling orbital custody of most one-to-few centimeter-sized objects. A diode-pumped alkali laser (DPAL) augmented with mode-locking and Q-switching serves as an illuminator and offers exceptionally high spectral brightness due to its output beam's sub-nanosecond pulse duration and picometer-level spectral linewidth. Kilohertz fast-rastering enables interrogations of distinct few-meter-sized sky-patches at megahertz rates. Paired on the observation side with one or more telescopes outfitted with Faraday anomalous dispersion optical filters (FADOFs), image intensifiers, multi-pixel arrays, and nanosecond timing, the combined system could offer nearly background-free discoveries of RSOs every hour, even during daytime. Periodically re-flashing previously discovered objects to maintain orbit custody expends only a small fraction of total observing time.

There is disclosed a gated power supply for a night vision system includes an input terminal to receive source power, and output terminal to electrically couple to a photocathode, a first voltage source to source a positive or neutral voltage to the photocathode, a second voltage source to source a large negative voltage to the photocathode, and a switching circuit to switch between the first voltage source and the second voltage source on a duty cycle, wherein the switching circuit comprises an optical switch.

An inventive imaging method includes: (a) causing a beam to travel from an emitter through an examination area for receipt at a detector; and (b) within the detector, (i) transforming the beam that is received into light, (ii) transforming the light into electrical signals representative of digital images corresponding to the examination area, including using a collector within the detector to collect the light as it passes to photosensitive areas of the collector without first passing through any wiring layer of the collector, and (iii) transmitting from the detector the data representative of digital images for display of the digital images to a user on a computing device. The detector includes wiring layers having stacked substrates attached together, each including one or more processing circuits for fast readout and dual native ISO. Other innovative imaging apparatus and methods include a stacked films-based image intensification and light recycling method.

A method and system for determining concentricity of a multiple layer golf ball are disclosed herein. One or more images of a golf ball are generated using an X-ray source, a camera or a digital detector, and an image intensifier. An edge detection algorithm is preferably utilized. The method also includes calculating Y,Z center coordinates of the a best fit diameter or ellipse of the inner edge layer and outer edge layer of the multiple layer golf ball.

The utility model relates to the field of optical imaging and mechanical design, and discloses a single-lens light-incoming multi-Cmos imaging device, which comprises an optical focusing lens, an image intensifier is arranged at the bottom of the optical focusing lens, an installation assembly is arranged at the bottom of the image intensifier, the installation assembly is provided with a focusing lens and a CMOS base, and the focusing lens and the CMOS base are arranged on the optical focusing lens. The focusing lens is arranged at the bottom of the image intensifier, and the CMOS base is arranged at the bottom of the image intensifier. According to the utility model, through the sizes of imaging visual angles of a plurality of CMOS, the light inlet amount of the aperture, and the adoption of the CMOS of the same specification when a plurality of cameras are used for image acquisition, when image fusion is carried out, the image size and the data flow size can be unified, the fused image does not deviate, the difficulty of later software algorithm repair is reduced, the image quality is improved, and the image noise is reduced; meanwhile, the light incoming amount, the imaging focal length and the image size of the CMOS needing image fusion are unified, and image fusion can be more accurate.

An image intensifier assembly has an image intensifier tube having a optical element. The optical element includes a emitting surface. The optical element comprises an outer dimension. The image intensifier assembly further includes a first power supply comprising a first circuit board having a first inner dimension defining an opening, a first outer dimension and a first thickness. The first inner dimension surrounds the outer dimension of the optical element. The first outer dimension is within the image intensifier assembly. The first circuit board further includes a component surface. The component surface extends from the first inner dimension to the first outer dimension. The first circuit board has power supply components mounted on the component surface.

The utility model relates to the technical field of optical imaging, in particular to a series lens group optical coupling system for an image intensifier. Comprising a series lens group, and the series lens group comprises a first lens and a second lens which are sequentially arranged between a phosphorescent screen of an image intensifier and a CCD or CMOS camera in parallel from front to back; the first lens is a collimating lens and is used for converting light rays from an object into parallel light beams; and the second lens is an imaging lens and is used for focusing the parallel light beams on a camera photosensitive device to form a clear image. According to the series-connection lens group, through combination of the two lenses, effective focusing and imaging of light rays are achieved, and the series-connection lens group has a high aperture ratio, high light transmission efficiency and excellent optical resolution; compared with traditional optical fiber taper coupling, the series lens group reduces image artifacts and improves image quality. And meanwhile, maintenance and upgrading are facilitated, and a complex re-alignment process is not needed.

The present application provides a reflective telescope for enhancing images, relates to a technical field of telescopes, the reflective telescope comprises: a reflective secondary mirror, configured to bend an optical axis by 90 degrees; a concave reflective primary mirror, configured to reflect light onto the reflective secondary mirror; a processor, configured to receive data for processing and output processed images; a projection mechanism, configured to receive the images output by the processor and project the images onto the reflective secondary mirror; and an eyepiece, configured to observe an imaging of reflected light from the reflective secondary mirror. The present application can achieve image enhancement of telescopes, achieving a telescope effect of mixed-reality (MR) image augmentation, without generating additional incident light loss, and making the image observed through the telescopes clearer.

With the invention, the afterglow of a fluorophore can be visualized by observation with a rolling-shutter camera under pulsed illumination. Image sections captured during a dark phase contain only the light emitted by long-lived fluorophores. This enables the imaging acquisition of long-lived fluorescence using inexpensive, widely available CMOS cameras without moving parts and without image intensifiers and without synchronization of camera and pulsed illumination.

Vision system (300) for amplifying and segmenting an image (100) of an environmental scene, comprising the following: an image amplifier (305) which amplifies a segmented image of the surrounding scene incident on an input of the image amplifier and provides an amplified and segmented image of the surrounding scene to an observer at an output of the image amplifier; and an input-side optical module (301) comprising at least two optical imaging means (302, 303, 304) that generate the segmented image of the surrounding scene and map it to the input of the image intensifier, wherein a first optical imaging means of the at least two optical imaging means generates a first image segment (102) of the surrounding scene with a first image scale, and, wherein a second optical imaging means of the at least two optical imaging means generates a second image segment (101) of the surrounding scene with a second image scale.

The invention relates to a microchannel wafer (18) comprising a body (39) provided with a plurality of tubular microchannels (25) whose axes of revolution are parallel to each other; and a functionalization layer (33) present on an internal surface of each microchannel (25). According to the invention, the constituent material of the body (39) is pure silica. Figure for the abstract: Fig 5

A photodetector capable of accurately and easily positioning a sample at the focal position of a predetermined measuring light beam is provided. [Solution] The light detection device 1A includes an image intensifier I, a case 2 that supports the image intensifier I, and an attachment mechanism 9 that is configured to allow a holding structure 50 for holding the case 2 to be detachably attached. The attachment mechanism 9 is arranged so that, in an attached state where the holding structure 50 is attached to the attachment mechanism 9, the holding structure 50 indicates the target position at which light incident on the image intensifier I should be focused.

This application provides an optical lens structure and an optical device. The optical lens structure includes an objective lens assembly, an image-switching lens assembly, and an eyepiece assembly arranged sequentially from the object side to the image side along the main optical path. It also includes a conversion device and an image-enhancing optical element connected to the conversion device. The conversion device is used to switch the image-enhancing optical element to the main optical path between the objective lens assembly and the image-switching lens assembly when the optical lens structure is in a low-light environment, thereby achieving image enhancement in low-light environments to form a clear image for human observation. Furthermore, in visible light environments, the image-enhancing optical element can be switched out of the main optical path to avoid overexposure and affecting imaging effects if the image-enhancing optical element is in the optical path. This allows the optical lens structure to be used in both low-light and visible light environments without the need for two sets of lenses for different environments, thus simplifying the structure, reducing cost and weight, and improving portability.

This process for producing a wafer of microchannels includes the following steps: – functionalization of the internal surface of the microchannels (25) by deposition of metallic nanoparticles (40) to allow jump conduction in the microchannels (25); and – fixation of the metallic nanoparticles (40) on the surface of the microchannels (25) by deposition of a layer of dielectric material on the functionalized surface of the microchannels (25).The functionalization step comprises the following steps: – application of electrostatic charges of one polarity (41) to the metallic nanoparticles (40) within an aqueous solution; – application of electrostatic charges of opposite polarity (43) to those applied to the metallic nanoparticles (40) on the inner wall of the microchannels (25); and – immersion of the microchannels (25) in the solution so as to deposit the metallic nanoparticles (40) on the inner surface of the microchannels (25), before the fixation step of the metallic nanoparticles (40). Figure for the abstract: Fig 8c.

The application discloses a positioning printing method for synchronous or asynchronous input of multiple-knitted-cloth towel blanks, which comprises the following steps: taking real-time photos of multiple-knitted-cloth towel blanks on a conveying belt, calibrating and enhancing the images, and then sequentially splicing the images to a photo buffer area to form a global photo of the conveying belt; detecting the positions of each towel block in the global photo; deforming a printing template pattern according to the detection result, and filling the printing template pattern into a corresponding position of a 'to-be-printed buffer area'; when the cloth is conveyed to below a nozzle, printing the pattern in the to-be-printed buffer area to realize accurate positioning printing. The application has the following advantages: multiple-knitted-cloth towel blanks can be simultaneously printed, the width of the conveying belt can be effectively utilized, printing errors caused by wrinkles or weft skew problems of single-knitted-cloth towel blanks are avoided, positioning printing problems of two or more parallel input towel blanks are solved, no work station is needed to control the synchronization of the cloth at the entrance of the conveying belt, manual work is saved, and accurate simultaneous printing of the cloth with little difference in specifications is allowed.

The invention relates to the technical field of external wall water seepage ultrasonic detection, and provides a nondestructive test method for an internal structure of a test piece, which comprises the following steps: collecting echo signals and echo time of each sampling point of a building external wall to be subjected to water seepage detection; the echo signals are separated into independent echo signals, the echo compensation coefficient and the signal anomaly degree of the echo signals of the sampling points are determined, an ultrasonic image is established according to the echo signals of all the sampling points, the ultrasonic image is divided into ultrasonic blocks of the sampling points, the compensation degree of the ultrasonic blocks is calculated, the ultrasonic image is enhanced, and an enhanced ultrasonic image is obtained; according to the difference between the gradient components of all the edge pixel points in the enhanced ultrasonic image in the horizontal direction and the vertical direction, the water seepage possibility of the enhanced ultrasonic image is determined, and according to the water seepage possibility, nondestructive testing of the internal structure of the building outer wall with water seepage to be detected is achieved. The invention aims to improve the precision of water seepage detection of the building exterior wall.

The invention belongs to the technical field of safety prevention and control monitoring of railway business lines and railway-related engineering projects, and discloses a radar and vision fused warning line early warning method and system, and the method comprises the steps: carrying out the filtering and denoising processing of radar point cloud data, and carrying out the image enhancement processing of visual image data; respectively extracting motion features and appearance features from the processed radar point cloud data and the processed visual image after time-space registration, and fusing the motion features and the appearance features to obtain a comprehensive feature vector of the target object; matching the comprehensive feature vector with a preset warning line rule base to judge whether the target object violates a warning rule, and if so, determining a risk level of the target according to a violation type; and triggering a corresponding grading early warning instruction based on the risk grade, and driving the associated equipment to execute a corresponding response action, thereby solving the problems of poor adaptability of a single sensor in a complex environment and high false alarm rate of a single radar system by fusing radar and vision, and improving the reliability and accuracy of the early warning system.

Various implementations include a fluoroscopic mobile device for use with a patient disposed on a support apparatus. The device includes a base, a support arm, an x-ray tube, and an image intensifier. The support arm extends from the base, the support arm comprising a first arm portion and a second arm portion. Each of the first arm portion and the second arm portion has a proximal end proximal to the base and a distal end opposite the proximal end. The x-ray tube is coupled to the distal end of the first arm portion. The image intensifier is coupled to the distal end of the second arm portion. The x-ray tube is configured to be disposed above the patient relative to a gravitational direction when the system is in use. The image intensifier is configured to be disposed between the patient and the support apparatus when the system is in use.

An image intensifier assembly has an image intensifier tube having a optical element. The optical element includes a emitting surface. The optical element comprises an outer dimension. The image intensifier assembly further includes a first power supply comprising a first circuit board having a first inner dimension defining an opening, a first outer dimension and a first thickness. The first inner dimension surrounds the outer dimension of the optical element. The first outer dimension is within the image intensifier assembly. The first circuit board further includes a component surface. The component surface extends from the first inner dimension to the first outer dimension. The first circuit board has power supply components mounted on the component surface.

An ultrasound imaging system (302) includes a probe (304) having a head (311) having a first width along a long axis and a transducer array (310) at the head of the probe and having a second width along the long axis, where the first width is greater than the second width, and the transducer array is configured to generate electrical signals indicative of received echoes. The ultrasound imaging system further includes a beamformer (320) configured to generate a fan image based on the electrical signal; an image intensifier (328) configured to generate a graphical vertical trajectory corresponding to a vertical line from an end of the head into the sector image; and a display (326) configured to display a graphical vertical trajectory superimposed on the fan-shaped image to visually distinguish a first region of the image projected directly below the head from a second region of the image not projected directly below the head.

A system for identifying at least one beacon (B) comprising night vision binoculars or a telescope incorporating an image intensifier tube (13). The image intensifier tube (13) comprises a diffraction grating (20) placed between an entrance window (15) and a photocathode (16) so as to diffract photons in said photocathode and to enable the photocathode to exhibit a quantum efficiency (QE): – greater than 1% in an image formation wavelength range and; – between 0.001 and 1% in a detection wavelength range, distinct from said image formation wavelength range, said detection wavelength range being at least between 1050 nanometers and 1075 nanometers; the image intensifier tube being configured to capture electromagnetic radiation emitted by said beacon in said second detection wavelength range. Figure for the abridged version: Fig 5

The application relates to a gate control system based on palm vein technology, which can reduce various noises contained in the image, prevent the existence of a larger protrusion or many burrs on the vein lines in the obtained image, and is beneficial to obtaining smooth and less-distorted palm vein line features of the palm and back of the hand; and the established palm vein feature model contains the macroscopic features of the palm veins, the fifth metacarpophalangeal joint is taken as a coordinate origin to segment and obtain the vein features in the rectangular area, the vein features in the area are limited features and do not change with the palm movement, feature matching is carried out by combining the macroscopic features of the veins and the microscopic features of the veins, the accuracy can be greatly improved, and the adaptive space for the acquisition error caused by the human body state change is provided.

The present disclosure provides a testing station, testing module and testing method for testing a plurality of image intensifier tubes. In an embodiment, a testing station includes a first testing module and a second testing module. The first testing module has a first input connector, a first output connector and a plurality of first testing sections each configured to test an image intensifier tube. The second testing module has a second input connector, a second output connector and a plurality of second testing sections each configured to test an image intensifier tube. The first testing module and the second testing module are configured to be removably attached to each other in a first orientation and a second orientation. The first input connector is connected to the second output connector in the first orientation, and the second input connector is connected to the first output connector in the second orientation.

The utility model relates to the technical field of glove production equipment, in particular to stain detection equipment for glove production, which comprises a bottom plate, the top of the bottom plate is fixedly connected with a mounting frame, the top of the mounting frame is fixedly provided with a motor I, and the output end of the motor I is fixedly connected with a rotating plate through a coupler. The two ends of the bottom of the rotating plate are rotationally connected with cones through bearings, the outer walls of the cones are fixedly sleeved with a mounting plate, the two sides of the mounting plate are fixedly connected with vertical plates, one side of each vertical plate is fixedly provided with an air cylinder, and the output end of each air cylinder is fixedly connected with an arc-shaped plate. The inflator pump and the spray pipe are used for removing dirt on the glove surface, and stain detection accuracy is improved. The design of the rotating plate and the gear enables the camera to shoot multi-angle images of the glove, the detection precision is enhanced, and after stain detection, the blotted glove automatically falls into the cleaning box and is stirred and cleaned by the motor.

The application provides a noise modeling and denoising method for a low-light image intensifier, comprising the following steps: step 1, establishing an imaging noise model for the low-light image intensifier; step 2, collecting output data of the low-light image intensifier under different illumination conditions, calibrating parameters of the imaging noise model, and superimposing the calibrated imaging noise model on a noise-free image sample to construct a training data set conforming to actual imaging characteristics; step 3, designing an image denoising network based on a convolutional neural network, wherein the network input is a noisy image, and the output is a clean image with noise suppressed; and step 4, training and optimizing the convolutional neural network based on the training data set, and verifying on synthetic data and real data. The method can effectively enhance the adaptability and generalization performance of the neural network to complex noise, and ultimately help to realize more accurate and stable image enhancement and denoising effect in the low-light imaging scene.

The present application relates to a kind of large thickness ratio workpiece's radiographic testing method and system, belong to radiographic nondestructive testing technical field, solve the problem that the quality of the radiographic image obtained by prior art is poor and leads to inaccurate workpiece quality determination.The method of the present application comprises: according to the maximum thickness of the workpiece to be measured, minimum thickness and workpiece material, a series of different size of radiation energy is set;Respectively using the series of radiation energy to the workpiece to be measured is penetrated, and the radiographic image under different radiation energy is obtained;Based on wavelet analysis, the radiographic image under different radiation energy is fused to obtain fusion image;The fusion image is enhanced to obtain the enhanced fusion image for judging the quality of the workpiece to be measured.The present application realizes the efficient detection of large thickness ratio workpiece, and the radiographic image obtained can present the structure information of the workpiece completely and clearly, which is beneficial to improve the accuracy of workpiece quality determination.

A bridge member for connecting first and second image intensifier tubes in a portable night vision apparatus including a body; a first pivotable member associated with the first image intensifier tube; and a second pivotable member associated with the second image intensifier tube. The bridge member is configured to move between a first position and a second position, the first position corresponding to the first and second image intensifier tubes being in an active position, the second position corresponding to the first and second image intensifier tubes being in a stored position, the second position corresponding to the first and second image intensifier tubes being positioned adjacent an outer surface of the helmet. The first pivotable member is configured to move the first image intensifier tube between the first and second positions. The second pivotable member is configured to move the second image intensifier tube between the first and second positions.