70 results about "Direct illumination" patented technology

The invention discloses a land environment shadow region optical feature recovery method and system, and the method comprises the steps: synchronously collecting a visible light image, a near infrared spectrum image and three-dimensional point cloud data of a target land region through a multi-mode sensor, and generating multi-source fusion data with a space-time alignment attribute; based on the multi-source fusion data, constructing an illumination transmission physical model of the scene, and separating a direct illumination attenuation component and an indirect illumination diffuse reflection component of a shadow region; performing compensation reconstruction on the direct illumination attenuation component by using a generative adversarial network, and generating an initial recovery image after shadow elimination; and outputting a final recovered image with global illumination consistency and local detail authenticity by adopting a cross-scale attention fusion mechanism. By using the embodiment of the invention, the real spectral attribute and rich spatial texture details of the ground feature can be maintained, and the visual consistency of the image and the reliability of subsequent quantitative application are improved.

The invention discloses a rapid three-dimensional shape measurement method for multi-scale frequency shift fringe projection. According to the method, on the basis of the method described in the basic patent CN118936361B, a frequency reuse stripe pattern is constructed through multi-scale region division, and images under different frequencies are obtained by adopting a three-step phase shift strategy. And constructing a complex signal for each sub-block image, performing frequency domain transformation, fusing main frequency amplitude images in two directions, extracting a frequency domain main peak index and an amplitude based on a position invariant theorem, realizing spatial positioning of a direct illumination main component, and further completing homonymy point matching and three-dimensional reconstruction between pixels of a camera and a projector. According to the method, only 15 patterns are needed in each direction, compared with 484 patterns in each direction in a basic scheme, the pattern compression rate reaches 96.9%, and the method is suitable for high-speed three-dimensional reconstruction tasks under complex illumination and dynamic scenes and has the advantages of being small in pattern number, high in response speed and high in positioning robustness.

The invention discloses an AOI angle adjustable condensation light source assembly which comprises a lamp box frame, a first light source, a second light source, a third light source, a first condensation piece, a second condensation piece, a first light diffusion plate and a semi-reflecting and semi-transmitting lens. At least the second light source, the third light source and the lamp box frame can rotate relatively to adjust the angle; the second light source and the third light source are arranged on the two sides of a camera connecting line of the visual camera and a detected product respectively, the first light source and the second light source or the third light source are arranged on the same side, the semi-reflecting and semi-transmitting lens is installed on the path of the camera connecting line, and the light emitting end of the first light source faces the reflecting face of the semi-reflecting and semi-transmitting lens; the first light condensing part and the second light condensing part are respectively arranged at the light emitting ends of the second light source and the third light source and are used for guiding direct illumination rays to a detected product; and the first light scattering plate is arranged at the light emitting end of the first light source and is used for guiding direct illumination rays to a detected product through the semi-reflecting and semi-transmitting lens.

In-vehicle system that includes: a illuminating unit (105) that illuminates an area different from a set light shielding area with light; an image-generating unit (101) that images an area containing an illumination area of ​​the light emitted by the illumination unit (105) in order to capture a recorded image; an object detection unit (254) that detects from the recorded image a non-target object that should not be illuminated with the light; a direct illumination prevention unit (255) which calculates the light shielding area based on the position of the non-target object in the captured image and correction information and sets the light shielding area in the illumination unit (105); a correction timing light shielding area setting unit (256) that sets the specified light shielding area in the illumination unit (105); and a correction calculation unit (257) that calculates the correction information based on the captured image when the correction timing light shielding area setting unit (256) sets the light shielding area in the illumination unit (105), wherein the correction calculation unit (257) outputs the calculated correction information to the image generation unit (101), and the image generation unit (101) determines an output area based on the correction information as the captured image, wherein the correction information is a deviation between a center position of the beam area of ​​the beam unit (105) and a center position of an image generation area of ​​the image generation unit (101).

The present invention addresses the problem of suppressing the occurrence of halo in a captured image even when an illumination unit is used for direct illumination in order to avoid an increase in the size of the entire device. The inspection device includes: a plurality of rod-shaped illuminators that irradiate illumination light from the surroundings to the die-casting product placed on the stage; a robot arm for sequentially moving the first camera to a plurality of imaging points so as to image different parts of the die-casting product on the stage; a storage device that stores a first dimming value that is set for each imaging point such that halo does not occur in the captured image; and a controller for controlling the amount of illumination light from the rod-type illumination on the basis of the corresponding first dimming value in a state where the first camera is located at each imaging point, and then causing the first camera to image the die-cast product.

An ophthalmic laser system for generating a first beam at a first wavelength on a first beam path and a second beam at a second wavelength on a second beam path, and directing optics to selectively direct the first beam or the second beam to a treatment beam path. The ophthalmic laser system incorporates a reflex coaxial illuminator comprising a reflex mirror movable on an axis from a position out of the treatment beam path to a position in the treatment beam path to direct illumination into an illumination path coaxial with the treatment beam path. The reflex mirror is adapted to transmit a beam that follows the second beam path.

The invention discloses a computer system of a composite stripe multi-mode imaging model based on parallel single pixels. The computer system comprises a control unit, a projector and a color industrial camera, the control unit performs multi-modal imaging through the following method: constructing at least one stripe pattern with a specified frequency, and synthesizing the stripe patterns into an RGB composite stripe pattern; collecting a color composite image modulated by the surface of the target object; acquiring three-dimensional depth information of the target object; reconstructing a direct illumination texture map of the scene; the scattered field distribution of the scene is modeled and reconstructed; and based on the three-dimensional depth information, the direct illumination texture map information and the scattered field distribution information, a final multi-modal imaging result is obtained. The sampling efficiency is remarkably improved through spectrum channel multiplexing, the imaging interference problem of a complex optical surface is effectively solved, and the method is suitable for synchronous high-precision measurement of geometric and physical attributes in a dynamic scene.

To prevent deterioration in measurement accuracy due to the influence of stray light in a technique for inspecting an image recorded on a print medium by using an imaging part and a colorimetric part.SOLUTION: In the image inspection apparatus and the printing apparatus according to the aspects of the invention, the printing medium is supported by being stretched between the first roller and the second roller. An imaging unit that images an imaging region by causing illumination light to be incident on a portion of the printing medium wound around the first roller and receiving reflected light from the imaging region on which the illumination light is incident, a colorimetry unit that performs color detection of a color detection region by causing the illumination light to be incident on a portion of the printing medium wound around the second roller and receiving light reflected from the color detection region on which the illumination light is incident and incident on a light receiver, and a light shielding unit that is disposed between the imaging unit and the light receiver on a first main surface side of the printing medium stretched between the first roller and the second roller and shields light from the imaging unit toward the light receiver.SELECTED DRAWING: Figure 7

This invention discloses a video advertising projection device for exhibitions with multi-wide-angle lighting functions, including an exhibition video advertising projector, a dynamic attitude adjustment component, an intelligent color-tuning and soft light diffusion component, and a light path shaping and light-cutting component. The exhibition video advertising projector has a spotlight drive chamber installed inside, and the dynamic attitude adjustment component is installed inside the spotlight drive chamber. The intelligent color-tuning and soft light diffusion component is installed on the outer surface of the dynamic attitude adjustment component, and the light path shaping and light-cutting component is installed inside the intelligent color-tuning and soft light diffusion component. This invention constructs a dynamic adjustment mechanism for the spotlight attitude through the coordinated operation of an electric push rod, a telescopic rod, a micro servo motor, and a counterweight. This avoids the defects of mirror reflection, whitening, and blurring caused by the fixed-angle wide-angle direct illumination of the spotlight on the advertising screen. Through the mutual cooperation of a dimming plate, a drive motor, and gears one and two, intelligent switching between warm and cool colors and stepless adjustment of light intensity are achieved.

An image rendering method includes: acquiring a project scene, materials of an object in the project scene including a light source material, and the light source material being a material that is endowed with a light source attribute by setting a corresponding shading model to be a custom grid light source shading model; searching object grids with the light source material from the project scene, and performing light source structure conversion on the object grids with the light source material to obtain light source grids, the object grids being grids used for forming the object in the project scene; and using each of the light source grids as a light source, to perform direct illumination rendering on each of pixels of the image representing the project scene, and fusing a direct illumination rendering result of each of the light source grids for each of the pixels to obtain a rendered target image.

A welding-free embedded direct lighting lamp comprises a lamp holder, the bottom of the lamp holder is concave upwards to form a mounting cavity, a lamp panel is mounted at the top of the mounting cavity, and a light homogenizing plate covers an opening of the mounting cavity; the end covers are installed at the two ends of the lamp holder, the end covers cover the two ends of the installation cavity in a sealing mode, and the power source connecting wire transversely penetrates through the end covers and is electrically connected with the lamp panel. The end cover comprises a cover plate and a socket protruding out of the inner wall of the cover plate, and the socket extends into the mounting cavity to connect the end cover with the lamp holder; a mounting groove is formed in the top of the socket, an electrode plate is arranged at the end of the power supply connecting wire, and the electrode plate sequentially penetrates through the cover plate and the mounting groove, elastically presses the contact of the lamp panel and is electrically connected with the contact of the lamp panel. The LED lamp has the advantages that the electrode plates are connected with the lamp panel without welding, the installation process is simplified, the installation efficiency is improved, and the electrode plates and the lamp panel can be rapidly installed and connected.

An angular sensitive time-of-flight position sensor device is provided and includes an array of pixels each comprising: a planar waveguide structure; a collection area with a grating pattern at a specific periodicity to couple incident light into the planar waveguide structure; at least one detector placed outside of the collection area and in a plane different from that of the planar waveguide structure; an output coupler to direct the light from planar waveguide to the at least one detector; a mask to shield the at least one detector from direct illumination; a narrow band light source that illuminates a field-of-view; a first electronics configured to detect the time-of-flight of light retroreflected, scattered, or both incident onto the position sensor and configured to provide distance ranging information; and a second electronics configured to interpret and retain time-of-flight information and configured to communicate with external electronics for system applications.

A detection system for a vehicle includes an imaging device configured to capture an image of an interior surface of the vehicle. The illumination assembly includes an array of laser diodes, each configured to project illumination, each configured as at least one of a single mode laser or a vertical cavity surface emitting laser ("VCSEL"). An optical element is proximate to the laser diode array and includes a collimating element for directing illumination to form at least one spot of light. A processor is in communication with the imaging device and the illumination assembly. The processor is configured to transmit a signal to operate the laser diode array and process an image of the interior surface to detect at least one of a change in position of the at least one point or a change in speckle content.

The utility model belongs to the technical field of common building structures, and particularly relates to a hollow copper plate mounting assembly for a wall surface, which comprises a carved plate, a base layer connecting unit, a surface layer coating unit and a lighting unit, wherein the carved plate is connected with the base layer connecting unit, and the base layer connecting unit is connected with a wall surface; the surface layer coating unit is located between the carved plate and the wall surface, and the surface layer coating unit coats the surface of the base layer connecting unit; the surface layer coating unit is suitable for supporting the lighting unit, and the surface layer coating unit is blocked between the lighting unit and the carved plate, so that a light source emitted by the lighting unit is reflected by the surface layer coating unit and then penetrates through the carved plate; the carved plate and the wall surface are connected through the base layer connecting unit, the connecting strength can be improved compared with the mode that the carved plate is directly connected with the wall surface, meanwhile, the surface layer wrapping unit can hide the base layer connecting unit and the lighting unit, and the problem that light uniformity is poor due to direct incidence of the lighting unit can be solved.

The invention discloses a photographic image enhancement method based on a low-altitude economic unmanned aerial vehicle, and the method comprises the steps: transmitting a laser pulse, obtaining an echo signal of the laser pulse, and obtaining echo power data changing along with the echo time; acquiring a first image of active illumination and a second image of passive illumination in the same observation period; calculating atmospheric extinction coefficient distribution on a path from an observation point to a scenic spot according to the echo power data, and constructing a three-dimensional atmospheric particle field based on the atmospheric extinction coefficient distribution; calculating a target direct illumination component of the scene, and acquiring a spectral signal of the second image as a target spectral signal; obtaining a target intrinsic material parameter under passive illumination and a target illumination parameter after interference removal; and synthesizing and outputting an enhanced image through a graphic renderer. According to the method, the final enhanced image is established on the real atmospheric physical model, the problem of scene information loss in the prior art is solved, and the quality of the enhanced image is improved.

A beamforming design method for intelligent metasurface arrays based on orthogonal time-frequency-space technology includes: aggregating multipath channels under direct illumination into cascaded channels with near-field direction vectors; randomly initializing the phase shift of intelligent metasurface units; establishing an effective channel matrix based on the cascaded channels; then establishing a multi-user and rate objective function; maximizing the objective function through phase shift optimization using a hierarchical search strategy; repeatedly executing the hierarchical search strategy to search and optimize subsequent blocks until the number of intelligent metasurface units in each block reaches a preset value; then performing an exhaustive search in the final block, thus completing one iteration; repeating the iteration until the maximum number of iterations is reached; outputting the final optimal phase shift; and implementing beamforming design based on the final optimal phase shift. This invention can reduce the complexity of beamforming design and ensure reliable transmission of high capacity during high-speed movement.

Systems and methods for grading a gemstone including its clarity are presented. An image capturing device disposed to capture images along a line of sight: a holder to support the gemstone thereon; a manipulator arm, carrying the holder, configured to rotate along a roll axis, and allow for rotation of the holder along a pitch axis: an illumination sub-system comprising a direct illumination arrangement, a dark-field illumination arrangement, and a facet illumination arrangement; and a controller arrangement configured to control the illumination arrangements to generate a plurality of illumination patterns for the gemstone, control the manipulator arm to position the holder for a plurality of orientations of the gemstone, control the image capturing device to capture an image of each of the generated illumination patterns, each of the orientations and each of one or more depths of focus, and process the captured images to grade the gemstone.

The present disclosure relates to an apparatus for synthesizing a 2D image and media using a reverse rendering including 3D spatially varying lighting information estimation, and the apparatus includes a target view analysis unit configured to estimate a normal map and direct lighting using a plurality of 2D images, a material estimation unit configured to reflect the normal map and direct lighting estimated from the target view analysis unit and estimate material information, a 3D lighting estimation unit configured to reflect the direct lighting estimated from the target view analysis unit and the material information estimated from the material estimation unit and estimate 3D spatially varying lighting information, and an image generation unit configured to reflect the estimated shapes, materials, and 3D spatially varying lighting information, synthesize the 2D images with 3D objects, and generate a synthesized image.

A display apparatus includes a directional display device for use in a vehicle arranged to display an image where the directional display device has an angular output light distribution that is adjustable, and a control system arranged to adjust the angular output light distribution of the directional display device. The display apparatus can include a backlight apparatus including a waveguide and a light source array to provide large area directed illumination from localized light sources. The waveguide can include a stepped structure where the steps include extraction features optically hidden to guide light propagating in a forward direction and to refract, diffract, or reflect returning light propagating in a backward direction to provide discrete illumination beams exiting from the waveguide. The control system can adjust the angular output light distribution based on outputs from sensors on the vehicle.

This invention discloses a non-direct three-dimensional light wall lighting system and method for stacked aquaculture channels, relating to the field of aquaculture lighting technology. The system includes multiple LED uniform light lamps arranged along the length of the stacked aquaculture channel. Each LED uniform light lamp includes an LED light-emitting component, a light-transmitting uniform light structure, and a lateral light-limiting structure. The lateral light-limiting structure limits the effective light output width of the LED uniform light lamp in the channel width direction, while the light-transmitting uniform light structure allows the light emitted by the LED light-emitting components to continuously diffuse in the channel height direction, thereby forming a three-dimensional light wall extending along the channel length direction, limited in the channel width direction, and covering multiple aquaculture layers in the channel height direction within the channel space between the stacked cages. The three-dimensional light wall is spaced apart from the facade of the stacked cages, so that the facade of the stacked cages is mainly illuminated by scattered light, refracted light, or diffused light within the channel space, rather than by direct illumination from the main beam of the lamps. This invention can improve the uniformity of illumination in the upper, middle, and lower layers of the stacked aquaculture cages, while allowing the low-position lamps to be installed at a higher height, avoiding obstruction of the passage of work vehicles, inspection vehicles, or inspection robots.

The utility model relates to a double-lens achromatic optical module with uniform transition, which comprises a first-stage lens and a second-stage lens which are coaxially arranged, the first-stage lens is a concave lens or a convex lens, the second-stage lens is a convex lens, and the incident surface of the second-stage lens contains textures and at least two kinds of micro lens arrays. And the first-stage lens and the second-stage lens have different focal powers. The utility model further relates to a corresponding commercial lighting lamp. According to the double-lens achromatic optical module with uniform transition and the commercial lighting lamp, the chromatic dispersion phenomenon of a spotlight in direct illumination, wall wiping and wall washing application scenes cannot be visually perceived, the transition of main and auxiliary light spots is uniform, and the impression experience of a user is improved.

A device for directing illumination for a sample volume in microscopy, such as in-situ cytometry. The device includes a body having a distal front end with an optical aperture provided therein, and a reflector. The reflector is arranged distal from the front end and at a non-zero distance from the optical aperture and is configured to receive light emitted through the front end and reflect at least part of the light received from the front end back into the optical aperture. The reflector is connected to the body by at least one cantilevering strut. The device may be part of an objective lens unit.

An apparatus for guiding illumination for a sample volume in microscopy, in particular in in situ cytometry. The device includes a body (611) having a distal front end (62) and an optical aperture (63) disposed in the front end, and a reflector (621). And a reflector disposed distal of the front end at a non-zero distance from the optical aperture, the reflector configured to receive light emitted through the front end and to reflect at least a portion of the light received from the front end back into the optical aperture. The reflector is connected to the body by at least one cantilevered strut. The proposed device may be part of an objective unit (6).

The present disclosure provides a sensing unit for measuring physiological parameters that comprises a skin contact surface, one or more light sources configured to emit light through the contact surface onto a subject's skin portion, and at least one light detector configured to detect light returning from the skin portion. A light opaque element is positioned between the light sources and the light detector to block direct illumination. The contact surface is formed by external surfaces of at least two light transmissive elements, a first element overlaying the light source(s) and a second element overlaying the light detector, and by an external edge of an edge portion of the light opaque element. The edge portion is flush with the external surfaces of the light transmissive elements and optically separates them, preventing both direct and indirect light leakage to the detector. This structure enables close proximity between light sources and detector (reducing energy consumption) while maintaining high signal-to-noise ratio by ensuring detected light originates solely from interaction with the subject's tissues.

The utility model discloses a high -intensity high -power car light, including support shell, the one side edge of support shell evenly fixedly seted up has the fin board, the opening side of support shell fixedly seted up has the transparent cover body, the outside edge of support shell fixedly connected with the installation link, the side of installation link fixedly connected with fixed screw rod, the outside edge of support shell symmetrical fixed setting has the mounting seat body, the side of mounting seat body fixedly connected with the connecting screw rod, the transparent cover body adopts the anti -UV material, has increased the wear resistance, prevents the scratch, and the light angle is controlled in 30 degrees and is not greater than 60 degrees through the optical structure, effectively reduced the direct illumination of light to the pedestrian and the oncoming vehicle, reduced the accident risk caused by strong light interference. Meanwhile, the luminous mark of rendering and warning can be carried out according to the vehicle type, can provide clearer warning information for surrounding vehicles and pedestrians under different scenes, further improved the traffic safety.

The present application designs a method and system for estimating human geometry, illumination and material from multi-view images captured under unknown illumination based on the idea of joint optimization of neural radiance field rendering and inverse rendering, mainly divided into a geometry pre-training stage and a joint optimization stage, first pre-train the human geometry to obtain a good initialization result, then estimate the illumination and material and fine-tune the geometry initialization result. When estimating the material, the present application uses an anisotropic material model to model complex human material. When estimating the illumination, the present application does not use an additional training stage to model indirect illumination, but considers the exit radiance of indirect reflection points as indirect illumination, and estimates the illumination visibility to distinguish direct illumination and indirect illumination. The present application solves the problem of inaccurate estimation of complex human material, and can effectively decouple geometry, illumination and material from human multi-view images, and improves the realism of human relighting results.

Display devices, display systems, backlight assemblies, and methods described herein provide a composite backlight that combines edge illumination and direct illumination. In one aspect, a backlight (650A) includes a waveguide layer (608), a first light source (616A), and an array layer (632). The first light source (616A) is disposed along an edge (638) of the waveguide layer (608). Each first light source (616A) transmits light (620A, 620B) into the waveguide layer (608). The array layer (632) is coupled to the underlying first surface (634) of the waveguide layer (608) and includes a reflective layer (614) and a second light source (618A, 618B, 618C). The reflective layer (614) reflects the light (620B) transmitted by the first light source (616A) into the waveguide layer (608). A second light source (618A, 618B, 618C) is disposed between the waveguide layer (608) and the reflective layer (614). Each second light source (618A, 618B, 618C) transmits light (624) through the first surface (634) into the waveguide layer (608). In another aspect, the second light source faces away from the waveguide layer and towards the reflective surface. In another aspect, a composite backlight includes a reflective surface disposed between the waveguide layer and the second light source, the reflective surface reflecting a portion of the received light.

The utility model relates to lighting equipment technical field, especially light source structure, including outer diffusion cover, transparent plastic shell and coloured inner diffusion cover, the plastic shell has first opening, the inner diffusion cover has and the second opening of first opening consistent orientation, the plastic shell is set in the inner diffusion cover outside, the outer diffusion cover cover is established at first opening department, the inner diffusion cover inside is equipped with radiator, to radiator as carrier, on its one end surface of outer diffusion cover sets up main light source assembly, realizes the front conventional lighting function of traditional light source, while setting up backlight source assembly on the one end surface of radiator away from outer diffusion cover, and cooperate coloured inner diffusion cover and transparent plastic shell, the light emitting direction of backlight source assembly is towards the inner diffusion cover, and not direct illumination user activity area, can avoid strong light direct illumination, the transparent plastic shell can let the soft light after the treatment of inner diffusion cover smoothly penetrate, thereby can realize the dual function of conventional lighting and soft atmosphere illumination.

This provides a more compact optical system while incorporating a transmission and reflection surface. [Solution] The optical system 100 guides illumination light to a modulation surface and projects modulated light from the modulation surface. The optical system has a transmission-reflection surface P that directs illumination light toward the modulation surface and modulated light toward the projection side, a first positive lens 104 positioned on the modulation surface side of the transmission-reflection surface, and a second positive lens 105 adjacent to the first positive lens on the modulation surface side. When L is the distance on the optical axis between the projection surface in the optical system and the modulation surface, and H is the diagonal length of the effective area of ​​the modulation surface, the condition 0.1 ≤ L / H ≤ 5.0 is satisfied.

The present invention addresses the objective of providing an illumination light source device with which, when an object is simultaneously irradiated with excitation light capable of stimulating a fluorescent substance contained in the object, the color rendering of mixed light from the illumination light and the excitation light is brought closer to the color reproducibility of natural light. This illumination light source device 100 is provided with an illumination light source 110, which directs illumination light L1 onto an object 101, an excitation light source 120, which directs excitation light L2, capable of stimulating a fluorescent substance contained in the object 101, onto the object 101, and a control unit 140 for controlling the illumination light source 110 and the excitation light source 120.When the illumination light L1 and the excitation light L2 are directed simultaneously at the object 101, the control unit 140 adjusts the intensity and / or the wavelength of the illumination light L1 or the excitation light L2 so that the spectral distribution of the mixed light L3, which combines the illumination light L1 and the excitation light L2, is brought closer to the spectral distribution of natural light than when only the illumination light L1 is directed at the object 101.