49 results about "Planar Imaging" patented technology

The invention discloses a calibration method of a polarization focal plane imaging system and an imaging system, relates to the field of photoelectric imaging and remote sensing detection imaging, and solves the problems of low correction efficiency and difficulty in correcting a system with a changed polarization state in the conventional polarization error correction technology. According to the calibration method, a plurality of coding patterns and corresponding polarization modulation matrixes are obtained based on the collected uniform light field and serve as calibration results. The polarization error correction method comprises the steps of obtaining an observation intensity vector based on a target scene; a corresponding polarization modulation matrix is obtained based on the coding pattern according to a coding polarization modulation matrix lookup table, and then a down-sampling Stokes vector after polarization error correction is obtained; and completing the correction of the polarization error through an imaging reconstruction method. A polarization focal plane imaging system comprises an imaging lens, a DMD digital micromirror array coding module, a focal plane DoFP polarization detector and an imaging reconstruction module. The method is suitable for the fields of remote sensing detection, target identification, environment monitoring and the like.

A device for light field microscopy, comprising: a two-dimensionally spatially resolving detector for detecting light radiated by a sample; a detection beam path having at least one microscope objective lens; and at least one multi-lens array for imaging the light radiated by the sample onto the detector, wherein the multi-lens array is arranged in a plane which is optically conjugated with respect to a rear focal plane of the microscope objective lens, or in the vicinity of such a plane; and a control and evaluation unit for activating the detector and for evaluating the measurement data from the detector. The device also includes an adjustable relay optical system in order to image the rear focal plane of the microscope objective lens into the plane in which the multi-lens array is arranged, or in the vicinity of this plane. A method for light field microscopy is also provided.

Methods and apparatus for transmission of volumetric images in the MPI format. According to an example embodiment, texture and alpha layers of multiplane images are packed, as tiles, into a sequence of video frames. The sequence of video frames is then compressed to generate a video bitstream, which is transmitted together with a metadata bitstream specifying at least the parameters of the packing arrangement for the tiles in the sequence of video frames. Example packing arrangements include various selectable spatial and temporal arrangements for texture layers, alpha layers, and camera views. In some examples, the metadata bitstream is implemented using a SEI message and includes parameters selected from the group consisting of a size of the reference view, the number of layers in the multiplane image, the number of simultaneous views, one or more characteristics of the packing arrangement, layer merging information, dynamic range adjustment information, and reference view information.

The invention relates to the technical field of dental instrument manufacturing, and discloses a small-angle calibration method, system and equipment for an orthodontic bending machine. According to the method, a reverse calibration path of macroscopic feedback and microcosmic calibration is adopted, specifically, a steel wire is continuously bent for multiple times at the same target angle C, and single-time angle deviation is amplified and accumulated into macroscopic geometrical characteristic quantity; calculating a theoretical value E1 of the characteristic quantity, and comparing the theoretical value E1 with a measured value E1; and iteratively adjusting the target angle C until the theoretical value is matched with the measured value, thereby establishing an accurate mapping relation between the target angle C and the calibration angle D to compensate nonlinear errors such as material springback and the like. The invention further provides a special optical measuring device, the transparent substrate is combined with the ruler module with the deep-color scales and uniform backlight, so that the outline of the steel wire and the scale marks both present deep-color silhouettes with consistent optical characteristics in an image, and system errors caused by coplanar imaging of heterogeneous materials are fundamentally eliminated. The integral forming precision of small-angle bending is remarkably improved, and the technical problem of error accumulation in long-span component manufacturing is solved.

The invention discloses a measuring device and a related method for simultaneous shooting of TDLAS, PIV and PLIF in a reflection mode, and relates to the field of optical measurement, and the device comprises a first dichroscope which is arranged between a first camera in a PIV and PLIF measuring mechanism and a first measuring window of a to-be-measured flow field bearing mechanism; the second dichroscope is arranged between a second camera in the PIV and PLIF measuring mechanism and a second measuring window of the to-be-measured flow field bearing mechanism; during measurement, an infrared laser of the TDLAS measuring mechanism emits infrared laser to the first dichroscope, the first dichroscope reflects the infrared laser and irradiates the infrared laser into a flow field to be measured, and the infrared laser penetrating through the flow field to be measured enters the second dichroscope and then is reflected into a detector of the TDLAS measuring mechanism. According to the invention, simultaneous shooting of TDLAS, PIV and PLIF can be realized, and a plane image and a TDLAS absorption spectrum can be obtained at the same time in a to-be-measured flow field.

By performing full-circumference inspections and multi-surface inspections, which require multiple imaging means, with a single image processing unit, the inspection system can be made more compact and equipment costs reduced. [Solution] A multi-plane imaging system comprising an imaging section 1 having an illumination means 15 for illuminating an imaging object W and a plurality of imaging units 10 arranged at a distance around the imaging object, an imaging unit control section 22 for controlling the imaging units, an imaging control section 2 having an image synthesis section 21 for synthesizing a plurality of image signals from the imaging object acquired by the plurality of imaging units to create a single synthetic image, and communication means 3 for connecting the imaging section and the imaging control section. The imaging unit comprises imaging means, a plane mirror arranged on the optical axis of the imaging means and rotatable about the optical axis, and an imaging means holding section for holding the imaging means and the plane mirror.

The invention discloses a fluid inclusion automatic identification and grading method based on multi-focal plane imaging. The method comprises the following steps: acquiring a plurality of local high-definition digital images covering the whole surface of a rock sample slice; inputting the plurality of local high-definition digital images into an optimized target detection model for identification to obtain a bounding box position and a phase state category of each fluid inclusion; calculating the actual physical size of each inclusion on the basis of the pixel size obtained by the bounding box position and in combination with calibration parameters of a microscope system, and grading the actual physical sizes by adopting a clustering algorithm; and synthesizing the plurality of local high-definition digital images into a slice panorama marked with the bounding box position of each fluid inclusion, and generating a statistical report containing the phase state category, the actual physical size and the grading information of each inclusion. According to the invention, efficient and automatic positioning, classification, grading and data statistics of the fluid inclusion in the rock sample slice are realized.

Methods and apparatus for multi-plane imaging (MPI) video streaming. According to an example embodiment, a method for streaming MPI video includes generating a sequence of video frames, each of the video frames including a respective plurality of tiles representing a texture layer and a transparency layer of one or more multi-plane images of the MPI video; and applying video compression to the sequence of video frames to generate a video substream. The method further includes generating a representation sequence of atlas frames corresponding to the sequence of video frames to specify at least a packed arrangement of tiles, and applying a compression to the representation sequence to generate an atlas substream. The method further includes multiplexing the video substream and the atlas substream to generate a first encoded bitstream encoding at least a portion of the MPI video.

The utility model relates to the technical field of printed circuit board nondestructive testing, in particular to multilayer blind buried hole PCB testing equipment which comprises a base, a testing frame is connected to the top of the base, a moving motor is installed in the testing frame, a first lead screw is rotationally connected to the middle of the testing frame, an output shaft of the moving motor is connected with the first lead screw, and a second lead screw is installed in the testing frame. The detection frame is slidably connected with an installation frame, the installation frame is in threaded connection with the first lead screw, an X-ray scanner is installed at the bottom of the installation frame, and a clamping assembly used for clamping and rotating the multiple layers of PCBs is arranged in the base. Through synchronous scanning and data fusion of an X-ray scanner and a visual scanner, the highlight saturation effect of a copper plating area in single plane imaging is avoided, geometrical characteristics of openings of through holes and blind holes are accurately recognized, copper plating interference signals are stripped, buried hole density characteristics are extracted, accurate classification and positioning of the blind holes and the buried holes are achieved, and finally the hole type misjudgment rate is reduced.

The application relates to a calibration method of a polarization defocus plane imaging system and the imaging system, and relates to the fields of photoelectric imaging and remote sensing detection imaging. The application solves the problems of low correction efficiency and difficulty in correcting the system for polarization state changes in the existing polarization error correction technology. The calibration method is based on collected uniform light fields to obtain a plurality of encoding patterns and corresponding polarization modulation matrices as calibration results. The polarization error correction method is based on a target scene to obtain an observation intensity vector; based on the encoding pattern, a corresponding polarization modulation matrix is obtained according to an encoding polarization modulation matrix lookup table, and then a down-sampling Stokes vector after correction of the polarization error is obtained; and the correction of the polarization error is completed through an imaging reconstruction method. A polarization defocus plane imaging system comprises an imaging lens, a DMD (digital micro-mirror array) encoding module, a defocus plane DoFP polarization detector and an imaging reconstruction module. The application is suitable for the fields of remote sensing detection, target identification and environment monitoring.

Methods and apparatus for multi-plane image (MPI) video streaming. According to an example embodiment, a method for video streaming includes providing to a client device a media presentation description of MPI streaming content stored in a storage container accessible by a server device, and a corresponding initialization segment from the storage container. The respective initialization segment is configured to inform a client device of a selection of a perspective of the MPI streaming content for which a media segment for rendering is requested. The method also includes receiving a request from a client device, the request identifying the selection and indicating respective recommended values for at least one of bit rate, resolution, codec type, and frame rate; and transmitting, to the client device, one or more bitstreams carrying media segments selected in the storage container based on the identified selection and further based on one or more of the respective recommended values.

This invention discloses an antimony-based focal plane array imaging chip with an electron injection structure, belonging to the field of semiconductor photodetector technology. The chip includes a detector chip, a readout circuit chip, and an indium pillar structure interconnecting the two. The detector chip is fabricated by molecular beam epitaxy (MBE) to grow a specific structure epitaxial wafer, followed by double-mesa etching to form nanopillar units containing the electron injection structure, and then by passivation opening, metal electrodes, and indium pillars. After the readout circuit chip completes the UBM metal layer and indium pillar fabrication, it is flip-chip bonded to the detector chip. The finished product is obtained through substrate thinning, dicing and packaging, and testing. This chip utilizes the nano-lateral confinement effect to shorten carrier transit time and reduce dark current, and combines photonic crystal characteristics to enhance light absorption, solving problems such as crosstalk and slow response in traditional technologies. It achieves an optical gain of 4264 and a response time of <10ns, making it suitable for extremely weak light and ultra-high frame rate short-wave infrared imaging scenarios.

The invention discloses a single-plane micro free-form surface array aerial imaging device and a design method and application thereof, and relates to the technical field of optical imaging. The device adopts a single substrate plane, N * M micro free-form surface unit arrays are divided on the single substrate plane, each unit defines a surface type under a global coordinate system taking the center of the substrate as an original point, an object plane is imaged to a specific image plane, and a preset amplification factor beta is kept. C1 continuity between adjacent units is ensured through strict boundary constraint conditions, and seamlessly-integrated high-image-quality aerial imaging is achieved. The design method comprises the steps of parameter setting, mapping relation establishment, ray tracing equation construction, curved surface differential equation solving, continuity optimization and the like. The invention has the advantages of compact structure, high imaging quality, convenience in processing and the like, and is suitable for various application scenes such as suspension display, augmented reality and the like.

The invention relates to the technical field of biomorphological analysis, in particular to a pine wood nematode morphological intelligent detection system based on visual identification, which comprises the following modules: a microscopic imaging module used for collecting a multi-focal plane pine wood nematode image sequence and marking focal length and time information; the body fluid refraction response acquisition module is used for acquiring reflection and refraction spectrum information of nematode body fluid in the image sequence and generating body fluid spectrum data; and the contour distortion compensation module is used for establishing a refractive index dynamic model based on the body fluid spectral data, performing dynamic correction on nonlinear contour distortion generated by body fluid refraction in the image sequence data, and generating image data after contour compensation. According to the method, a dynamic body fluid refractive index model is established, and a dynamic contour distortion compensation algorithm is introduced, so that frame-by-frame dynamic correction on nonlinear contour distortion caused by non-uniform distribution of body fluid refraction under the microscopic multi-focal plane imaging condition is realized.

The invention discloses a speed measurement method and device, and the method comprises the steps: obtaining a frame of image generated by a plane imaging device for an object to be subjected to speed measurement, and the image comprises the object to be subjected to speed measurement; and determining the speed of the object to be subjected to speed measurement in any one-dimensional or multi-dimensional direction based on the deformation quantity of the marker in the image, the deformation quantity of the marker being determined based on the original shape of the marker and the imaging shape of the marker in the image. According to the method, the speed of the to-be-measured object in any one-dimensional direction in the three-dimensional direction can be determined based on the deformation quantity of the marker in the single-frame image, and measurement through multiple frames is not needed, so that the real-time performance of speed measurement is improved.

An observation apparatus comprises an irradiation optical system 22, a scanning unit 3, an image-forming optical system 4, and an imaging device 5. The irradiation optical system 22 irradiates an observation object B with planar light L1. The scanning unit 3 moves the observation object B at a constant speed in a direction crossing the planar light L1, and allows the observation object B to pass through the irradiation surface La of the planar light L1. The image-forming optical system 4 has an observation axis P1 crossing the irradiation surface La, and forms an image from observation light L2 generated at the observation object B by irradiation with the planar light L1. Every time the observation object B moves by a prescribed distance, the imaging device 5 acquires image data D1 including an optical image of the observation light L2. The scanning unit 3 outputs, on the basis of the moving distance of a moving stage 33, position information S for determining the exposure start timing when the imaging device 5 acquires the image data D1.

The utility model provides a kind of plane imaging experimental device, it is related to experimental appliance technical field, bearing table, bearing table outer wall is equipped with mounting piece, and mounting piece is equipped with acrylic plate in it, bearing table upper surface is divided into two experimental areas with acrylic plate as boundary;Folding ruler, two experimental areas are equipped with folding ruler, folding ruler includes main ruler and vice ruler, and rotationally connected between main ruler and vice ruler, vice ruler outside is equipped with magnetic attraction plate, and light source piece is magnetically attracted and installed on magnetic attraction plate, the angle change of detection vice ruler, the angle change of vice ruler can be known by observing digital display screen during experiment, compared with artificial observation ordinary protractor to adjust angle, using the digital display screen in the present scheme is more accurate, cancel traditional protractor, angle adjustment between main ruler and vice ruler is not easy to wear.

Techniques are provided for performing echo planar imaging (EPI) data correction. This includes obtaining positive and negative readout gradient calibration data of an imaging target through non-accelerated EPI acquisitions; respectively adopting first and second DPG kernels to be fitted and respectively used to eliminate phase errors of positive and negative readout gradients to fit the positive and negative readout gradient calibration data of the imaging target, with the fitting targets being positive and negative readout gradient data, respectively, in ghost-free target ACS data, and obtaining, after the fitting, a first and a second DPG kernel for final use; obtaining imaging data of the imaging target through an EPI acquisition; adopting the first and second DPG kernels to correct the phase errors of the imaging data to obtain phase-error-free imaging data.

High-resolution microscopy method for the three-dimensional position determination of objects, in particular individual fluorophores, preferably for spatially high-resolution luminescence microscopy of a sample (7) which is labelled with labeling molecules (1) which can be activated or switched with a signal such that they can only be excited to emit certain luminescence radiation in the activated state, wherein the method comprises the following steps: a) Introducing the signal onto the sample (7) such that only a subset of the labeling molecules (1) present in the sample (7) are activated, wherein the sample (7) contains subregions in which activated labeling molecules (1) are at least as far apart from the nearest neighboring activated labeling molecules (1) as is greater than or equal to a length which results from a predetermined optical resolution, b) Excitation of the activated molecules (1) to emit luminescence radiation, c) Detection of the luminescence radiation with the predetermined optical resolution, and d) Generating a single image from the luminescence radiation recorded in step c), wherein the geometric locations of the luminescence-emitting labeling molecules are determined with a spatial resolution increased above the predetermined optical resolution, where the steps are repeated several times and the resulting individual images are combined to form a complete image, characterized by the fact that an object is imaged via an imaging system (OB, TL) with a microscope objective (15, OB) onto an area detector (5, CCD) consisting of individual detector elements, wherein at least one microlens arrangement (ML, ZL), which is partially located in front of the detector elements, images a different object plane (OE1) onto the detector elements in the direction of light behind the microlenses than onto detector elements in front of which there are no microlenses.

This application relates to the field of medical device testing technology, specifically a phantom and method for coronal plane reflection detection in a three-dimensional imaging device. The phantom includes: a top panel and a sealed space inside the acoustic window filled with a background tissue-like material; target lines embedded in the background tissue-like material; an acoustic window, a window for ultrasonic wave transmission, simulating the acoustic characteristics of human epidermal tissue; the background tissue-like material is a water-based polymer gel-based composite material; target lines, with their upper ends fixed in openings in the top panel and their lower ends free; used for quantitative measurement of imaging parameters in the coronal plane, where the coronal plane is a plane parallel to the horizontal plane when the human body is prone on the three-dimensional ultrasound imaging device; the imaging parameters include the lateral linearity, longitudinal linearity, axial image resolution, and lateral image resolution of the reflected image in the coronal plane; the center-to-center distance between two adjacent target lines is a predetermined distance; the predetermined distance is determined by the resolution of the three-dimensional ultrasound imaging device at the corresponding position in the coronal plane.

A STEM educational building set (i.e., apparatus) consists of a double-side multiplane imaging display device that provides two simultaneous and distinct 2D / 3D scenes. Viewers with polarized goggles can observe 3D multiplane scenes (i.e., a 3D scene for each axial plane) by displaying two laterally separated images of the same scene with different polarization. The building set teaches users optics, exposing them to refraction law, lateral magnification, optical two-dimensional projection, and three-dimensional imaging.

The application discloses a kind of single-photon laser active-passive imaging detection radars, comprising: laser emission module, laser ranging receiving module, focal plane imaging detection receiving module, timing control and ranging signal processing module, active-passive imaging data separation module, data processing module;Laser ranging acceptance module accepts the laser echo signal of target reflection, and target distance calculation is completed by the timing control and signal processing module;The focal plane imaging detection receiving module is based on the periodic pulse string gate signal that the timing control and signal processing module emit, in the mth measurement period, active reception and processing of echo signal are completed, and passive reception and processing of n-1 measurement periods are completed;The active-passive imaging data separation module realizes the separation of active imaging detection data and passive imaging detection data;And by data processing module, according to preset data processing algorithm processing, corresponding target active imaging and target passive imaging are obtained.

A segmented planar imaging system based on a beam splitter includes a lens array comprising lens columns. Microlenses within each lens column are paired to form baselines. These baselines are formed by the interference of light rays from two microlenses as a set of interference beams. Each microlens has two baseline formation methods. The imaging system also includes a photonic integrated circuit and an image processing module. The photonic integrated circuit includes an integrated beam splitter, an arrayed waveguide grating, waveguide transmission lines, and multiple balanced quadrature detectors. Each lens column is connected to one photonic integrated circuit. In this segmented planar imaging system, each microlens participates in forming two baselines via a beam splitter, and individual interferometer arms employ complementary baseline pairing methods. This increases the acquisition of spatial frequency information lacking in traditional systems, further improving the imaging quality of the system.

The invention relates to determination of transformations having a de-skew effect on 3D image data generated by a 3D imaging system scan. A method and apparatus (605; 606) for determining a transformation having a de-skew effect on 3D image data resulting from a scan by a 3D imaging system (605). 630; 630; 640: 650; 900) for a vehicle. Obtaining (701) a planar real surface (322a-c; 422a-c, 422a-c; 522a-c) resulting from a scan by the 3D imaging system (605), the planar real surfaces being non-parallel at least during the scan, having a constant one or more angular relationship between each other, whereby the 3D image data includes a 3D image data associated with the planar real surfaces (322; 422; 422; 522) corresponding to the planar imaging surface (327a-c). A planar imaging surface (327) is detected (702) in the 3D image data. On the basis of the detected planar imaging surface (327a-c) and the planar real surface (322a-c; 422a-c, 422a-c; 522a-c), such that when the transformation is applied to a description of the detected imaging surfaces (327a-c) in the coordinates of the 3D data, the transformation results in a relationship between the detected angular relationships between the imaging surfaces (327a-c) and the planar real surface (322a-c; 422a-c, 422a-c; 522a-c) between the first and second terminals (522a-c).

The invention relates to a low-noise time quantization circuit suitable for a laser radar focal plane detector, and belongs to the technical field of reading circuits of laser radar focal plane detectors. Compared with a traditional TAC architecture, the TAC architecture is based on a correlated double sampling principle, utilizes noise correlation between a reset signal and an effective signal in the same pixel readout circuit, caches a reset voltage and an effective signal voltage by using a pre-storage circuit in the pixel readout unit, and reads the reset voltage and the effective signal voltage to the correlated double sampling circuit through a column bus for subtraction; the influence of 1 / f noise, KCT noise, array fixed mode noise and other noise is greatly reduced, and the signal-to-noise ratio of focal plane imaging is improved.

The invention relates to the technical field of optical communication monitoring, and discloses an OCS monitoring optical path system, which comprises a monitoring light beam group provided with a monitoring optical path of MEMS micromirror deflection angle information; the 4f monitoring system is arranged on a light path between the MEMS micromirror array and the imaging screen and comprises a first lens and a second lens which are sequentially arranged along the direction of the light path, and the first lens and the second lens share a focal plane; and the imaging screen is arranged at the light emitting end of the 4f monitoring system, and is used for receiving an image formed after the reflected light of the MEMS micromirror array is processed by the 4f monitoring system, and determining the working state of the micromirrors in the MEMS micromirror array based on the light spot distribution information. The OCS monitoring light path system aims at solving the problems that in an existing MEMS micromirror array monitoring scheme, angle information carried in a monitoring light beam cannot be detected, information carried by detection light cannot be fully utilized, a large number of redundant light spots generated by micromirrors in a non-working state occupy imaging resources, and the monitoring efficiency is reduced.

Methods and apparatus for transmission of volumetric images in the MPI format. According to an example embodiment, texture and alpha layers of multiplane images are packed, as tiles, into a sequence of video frames. The sequence of video frames is then compressed to generate a video bitstream, which is transmitted together with a metadata bitstream specifying at least the parameters of the packing arrangement for the tiles in the sequence of video frames. Example packing arrangements include various selectable spatial and temporal arrangements for texture layers, alpha layers, and camera views. In some examples, the metadata bitstream is implemented using a SEI message and includes parameters selected from the group consisting of a size of the reference view, the number of layers in the multiplane image, the number of simultaneous views, one or more characteristics of the packing arrangement, layer merging information, dynamic range adjustment information, and reference view information.

The invention discloses an object plane super-resolution imaging system and method, and belongs to the technical field of optical imaging, and the system comprises a data obtaining module which is used for obtaining related data, and the related data comprises the resolution when a target object is subjected to plane imaging; and the data processing module is used for counting the total frame number according to the resolutions, obtaining plane imaging images corresponding to the resolutions from the total frame number, comparing the definition of the images, collecting the images with high definition, and generating a database about the images. According to the invention, by integrating the technical modes of dynamic resolution monitoring, defect feature early warning, mathematical model compensation and the like, the definition, adaptability and automation level of object plane imaging are improved, and the method is suitable for the fields of high-precision industrial detection, medical imaging and the like which have strict requirements on resolution.

1. Name of the designed product: animal CT machine (Vetmax 9). 2. Use of the designed product: used for animal X-ray two-dimensional planar imaging and three-dimensional tomographic imaging. 3. Design points of the designed product: the overall shape of the product. 4. Picture or photo best indicating the design points: perspective view 1.

The invention discloses an HgTe quantum dot infrared photoelectric detector of a CdHgTe quantum dot electron transport layer and a preparation method, and belongs to the technical field of photoelectric detection. The preparation method comprises the following steps: preparing a cadmium precursor solution and a tellurium precursor solution, mixing the cadmium precursor solution and the tellurium precursor solution to prepare a cadmium telluride quantum dot solution, carrying out spin-coating film formation, infiltrating the cadmium telluride quantum dot solution by using a methanol solution of mercury halide, and treating the cadmium telluride quantum dot solution by using an EDT isopropanol solution to obtain a CdHgTe quantum dot film; the thin film is used as an electron transport layer, and forms a detector with a substrate, a bottom electrode, a NiOx hole transport layer, an HgTe quantum dot photosensitive layer and a transparent top electrode. The preparation of the detector comprises the steps of cleaning the substrate and preparing the bottom electrode, the hole transport layer, the photosensitive layer, the electron transport layer and the transparent top electrode in sequence. The prepared film is uniform and compact, the detector has excellent response to visible-short wave infrared light, the dark current is low, the switch ratio is high, the process is simple, the cost is low, large-scale preparation is easy, and the film has the potential of developing infrared focal plane imaging devices.