22results about How to "Reduce ghosting" patented technology

The invention provides head-up display glass, a head-up display system and a vehicle, the head-up display glass comprises an outer glass plate, an inner glass plate and a middle layer clamped between the outer glass plate and the inner glass plate, the outer glass plate comprises a first surface and a second surface, and the inner glass plate comprises a third surface and a fourth surface. The middle layer is connected to the second surface and the third surface; the head-up display glass is provided with a display area, and the display area is used for reflecting projection light to form a head-up display image; the head-up display glass further comprises a functional reflecting layer and a sub-image eliminating layer, the functional reflecting layer has at least 10% of reflectivity for P polarized light incident at the incidence angle of 55 degrees, the surface roughness of the sub-image eliminating layer is larger than or equal to 11 nm, and the functional reflecting layer and the sub-image eliminating layer are not located on the same surface. In the thickness direction of the head-up display glass, the functional reflection layer at least covers the sub-image elimination layer, and the sub-image elimination layer at least covers the display area.

The invention provides a folded optical path lens, an optical imaging system and a head-mounted display device. The folded optical path lens comprises: a first lens having a first surface and a second surface arranged oppositely, the first surface being a convex surface; the light splitting film is arranged on the first surface, the difference value between the reflectivity and the transmissivity of the light splitting film is smaller than or equal to 20%, the light splitting film comprises multiple optical coating layers which are arranged in a stacked mode, and the multiple optical coating layers comprise at least one non-metal transparent coating and at least one metal layer. Through the arrangement of the metal layer, the consistency of the transmittance of the folded light path lens to obliquely-incident light component s polarized light and p polarized light can be improved, then the ovality of the folded light path lens is effectively improved, the ovality of the folded light path lens is closer to 1, and then ghosting and stray light of the folded light path lens can be effectively reduced.

The embodiment of the application provides a kind of vehicle-mounted display module and heads-up display system.It includes image source, reflection component and projection surface, image source includes first emission area for emitting AR-HUD light source and second emission area for emitting P-HUD light source;Reflection component includes first reflection component, second reflection component and transparent component, first reflection component is oppositely arranged in first emission area with first inclination angle, transparent component is arranged above first reflection component along the light source emission direction of first emission area, and is inclinedly arranged with third inclination angle, second reflection component is oppositely arranged in second emission area with second inclination angle, and is arranged between first reflection component and transparent component along the light source emission direction of second emission area.The module is used to achieve the effect of reducing occupied space.

The present application discloses a visual system, which includes, from the first side to the second side of the optical axis, a first lens with positive focal length, a second lens, a third lens, a partial reflection element, a fourth lens with negative focal length, a second quarter wave plate, and a polarizer; the visual system also includes a reflective polarizing element and a first quarter wave plate attached to each other, the first quarter wave plate is located on the first side surface of the second lens, or the reflective polarizing element is located on the second side surface of the second lens; the angle β between the tangent line of the second side surface of the third lens at the intersection of the main light of the 1.0 field of view reflected by the partial reflection element and the optical axis 1.0 Satisfies: 80.5°<β 1.0 <83.2°; Angle β between the tangent line of the second side surface of the third lens at the intersection of the main light of the 0.8 field of view after being reflected by the partial reflective element and the optical axis 0.8 Satisfies: 81.85°<β 0.8 <83.85°.

The invention relates to a cross-color gamut phase-guided double-attention fusion HDR imaging method. The method comprises the following steps: step (1), carrying out data preprocessing of denoising and cleaning on an original multi-exposure image sequence; step (2), obtaining standardized image data; (3) mapping a nonlinear pixel value into a linear physical illumination value for the standardized image data through a reverse application camera response curve, and outputting a linearized multi-frame image; step (4), splicing the linearized multi-frame images on a channel dimension, and constructing a unified input tensor containing complete dynamic range information; (5) performing convolution operation on the input tensor, and extracting shallow feature representation of local textures and edges of the image; extracting shallow layer features; and step (6), introducing a double attention mechanism to perform interaction and aggregation of global features, and outputting a fused high dynamic range feature map. The method can stably work in a dynamic scene and under an extreme exposure condition, and promotes the practical application of an HDR imaging technology.

The utility model belongs to the technical field of display, and particularly relates to an array substrate, a display panel and a display device.The array substrate comprises a substrate and a transistor arranged on the substrate, the transistor comprises a grid electrode and an active layer, and a grid insulating layer is arranged between the grid electrode and the active layer; the transistor further comprises a first electrode which is arranged on one side, far away from the substrate, of the gate insulating layer and is in lap joint with one end of the active layer; a first insulating layer is arranged between the shading electrode and the first electrode, the first insulating layer is arranged on the side, away from the substrate, of the gate insulating layer, the first insulating layer covers the first electrode and the active layer, a via hole is formed in the first insulating layer, and the shading electrode is in lap joint with the other end of the active layer through the via hole. And the orthographic projection of the shading electrode on the substrate is at least partially overlapped with the orthographic projection of the first electrode on the substrate. According to the scheme, the coupling effect of parasitic capacitance can be reduced, poor display such as ghosting and crosstalk is reduced, and the display effect is improved.

The invention discloses a random texture tiling de-duplication method, which comprises the following steps of S1, texture segmentation: segmenting a texture image into areas with equal sizes and shapes; s2, introducing a Hash value, and performing random offset and rotation on the center coordinate of the hexagon so as to reduce the repeatability of the whole texture; s3, introducing a curvilinear function, and performing curve constraint on the weight value by using the curvilinear function before texture mixing; and S4, introducing an index mixed weight. According to the method, a hexagonal grid concept is introduced, and a texture image is segmented into multiple deformations for three-primary color mixing. The concept of index mixed weight is introduced, the mixed weight value is improved to the power of the index, the index is limited in the range, and ghosting and artifacts between mixed areas are obviously reduced. An image feature transition function is provided, transition is carried out according to image data to influence the weight, and the problem of contrast loss of a mixed region is effectively solved.

The application discloses a height measuring system and a photoetching machine device thereof, and relates to the field of photoetching machine wafer height and surface type detection. The height measuring system comprises a grating piece, an imaging assembly, a filtering assembly and a sensing piece. The grating piece is used for passing a to-be-detected light source. The to-be-detected light source forms diffraction beams with different diffraction orders which are distributed in sequence through the grating piece. The imaging assembly is arranged on one side of the grating piece where the diffraction beams are formed. The filtering assembly is arranged on one side of the imaging assembly close to the grating piece or in the light path in the imaging assembly. The sensing piece is used for receiving the diffraction beams filtered by the filtering assembly. The application diffracts the light beams through the grating piece, and realizes imaging through cooperation of the imaging assembly and the sensing piece. The filtering assembly filters the diffraction light of a certain order in the diffraction beams, thereby reducing the defocus and ghosting phenomenon, and improving the measurement precision.

This invention relates to a method and system for constructing a dynamic 3D Gaussian map based on semantic enhancement, belonging to the field of computer vision and robot simultaneous localization and mapping technology. The method utilizes a keyframe scheduler to filter keyframes, performs semantic detection on the keyframes based on a semantic segmentation network to generate an initial semantic mask, and performs geometric verification and correction on the mask using depth reprojection residuals. The corrected mask is propagated to adjacent ordinary frames using camera pose-based reprojection, and temporal voting fusion is performed to obtain a temporally consistent semantic mask sequence. A 3D Gaussian sphere map is initialized and updated in static regions, and semantically guided adaptive density control is performed in dynamic regions to suppress dynamic artifacts. Lightweight map management is then performed based on information entropy scoring. Finally, under photometric error and geometric constraints, joint nonlinear optimization of camera pose and Gaussian sphere parameters is performed and iteratively updated in a closed loop.

The present invention provides an image sensor comprising a photosensing layer for receiving incident light in a wavelength range, detecting the incident light, and generating an optical signal representing the incident light, wherein the photosensing layer has a first surface and a second surface opposite to the first surface; a redistribution layer RDL disposed on the first surface of the photosensing layer, the redistribution layer including a plurality of conductive traces for receiving an electrical signal representing the optical signal; and a protective layer disposed on the redistribution layer and opposite to the photosensing layer, the protective layer being configured to reflect incident light passing through the photosensing layer and the redistribution layer, and to direct the reflected light to the second surface of the photosensing layer and away from the second surface, wherein the protective layer is opaque and reflective to light in the wavelength range.

The invention provides an optical system based on an OLEDoS display chip, and the system comprises a plurality of lenses which comprise a fourth lens to a first lens which are sequentially arranged from the image source side to the human eye observation side of the optical system, and each lens is provided with a first side surface facing the human eye observation side and a second side surface facing the image source side; the polarization control assembly comprises a first composite membrane and a second composite membrane, the first composite membrane is arranged on the first lens or the second lens, the second composite membrane is arranged on the first side face of the third lens, and the polarization control assembly is used for controlling the polarization direction of light; the light splitting film is arranged on the second side face of the second lens, and the light splitting film is used for transmitting at least one part of the light rays and reflecting at least the other part of the light rays; and the display assembly comprises an OLEDoS display screen. According to the invention, the problem that high resolution and low ghost image of an optical system based on an OLEDoS display chip in the prior art are difficult to consider at the same time is solved.

This invention provides a method for image stitching using line segment projection point-line fusion in sparse seascape texture scenes, relating to the field of image processing technology. The method includes the following steps: S1, acquiring the image to be stitched; S2, performing cylindrical projection processing on the image to be stitched to obtain a cylindrical projection image; S3, extracting point features from the cylindrical projection image and performing initial matching, estimating an initial homography matrix based on the matched point pairs; S4, extracting line segment features from the cylindrical projection image, calculating line segment matching scores, and determining matching line segments based on the line segment matching scores; S5, fusing the virtual matched point pairs with the point feature matching point pairs to obtain an optimized homography matrix; S6, completing image registration based on the optimized homography matrix, constructing a total cost function for the stitching seam in the overlapping region, and obtaining the stitched image. This invention can improve the accuracy and robustness of image stitching in sparse seascape texture scenes.

The invention discloses an image processing method and apparatus, a computer device and a computer readable storage medium. The method comprises the steps of obtaining to-be-processed image information and target ambient light brightness; performing detection processing on characters in the to-be-processed image information to obtain edge position information and character width information of the characters; and performing diffusion processing on edge pixels of the character based on the target ambient light brightness, the edge position information and the character width information to obtain target image information. By adopting the method provided by the invention, the problems of color edges and ghosting generated when the high-color-gamut display equipment displays the characters can be reduced, and the definition and visual comfort of the characters are improved.

The application discloses a lens assembly, a display module and an electronic device. The lens assembly comprises a first lens and a semi-transparent semi-reflective film. The first lens comprises a first surface and a second surface opposite to each other, and the semi-transparent semi-reflective film is arranged on the first surface. The semi-transparent semi-reflective film comprises a modulation film layer and a dielectric film layer. The modulation film layer is arranged on the first surface of the first lens, and the dielectric film layer is arranged on the side of the modulation film layer away from the first lens. The dielectric film layer and the modulation film layer are used to cooperate to adjust the refractive index of the semi-transparent semi-reflective film, so that the circularly polarized light incident to the semi-transparent semi-reflective film at different incident angles remains circularly polarized light after entering the first lens. The lens assembly, the display module and the electronic device of the application can maintain the circular polarization state of the circularly polarized light passing through the semi-transparent semi-reflective film after the circularly polarized light is incident, so that the circular polarization degree of the circularly polarized light passing through the semi-transparent semi-reflective film is high, the influence of stray light on subsequent light propagation is reduced, thereby reducing ghosting and improving imaging effect.

The application discloses an image splicing and brightness uniform device and method for silk detection, and belongs to the technical field of raw silk detection and machine vision image processing. The device comprises an improved blackboard device, a calibration target device, a linear slide linear module device, an electrical control device, an image acquisition module, a computer module and a fixed aluminum profile device. The method determines the spatial order and homography matrix of multi-camera images by using the calibration target, synchronously acquires raw silk images at multiple absolute position image acquisition stations, sequentially completes multi-camera image fusion in the stations and overall splicing between the stations, and then corrects the brightness channel according to the background illumination estimation of the overall raw silk blackboard image to obtain a brightness uniform image. The application can take into account large-scale coverage, silk stripe texture resolution and image brightness consistency, is suitable for raw silk machine vision detection and detection result tracing, and provides a solution for raw silk blackboard image acquisition and large-scale high-quality image tracing.

The embodiment of the present application provides an image stitching method, device, equipment, medium and program product, the image stitching method includes: extracting feature points of a reference image and an image to be stitched for a video frame captured by a camera array; determining the world coordinates of each feature point based on an intrinsic parameter matrix and an extrinsic parameter matrix of camera calibration in the camera array; determining the homography transformation matrix of the image to be stitched relative to the reference image based on the world coordinates of the feature points, the intrinsic parameter matrix and the calibrated extrinsic parameter matrix; performing coordinate transformation on the image to be stitched based on the homography transformation matrix; completing the image stitching operation based on the optimal stitching seam between the target image to be stitched and the reference image, and obtaining a frame of video panorama. A method for determining the homography transformation matrix based on camera internal and external parameters is implemented, which weakens the dependence of image stitching on image features and is suitable for low-texture scenes.

This invention discloses a video frame interpolation method and system based on edge computing, belonging to the field of intelligent video processing technology. The method includes the following steps: acquiring data and generating video frame sequences, frame timestamps, and edge state tables; extracting change features to generate interpolated frame segments and segment complexity tables; inputting the segment data into an improved PWC-Net network to generate optical flow tables, residual region tables, and candidate frames; calculating the interpolation load to generate a computational cost table; calculating output interval deviation and node switching delay to generate a temporal sequence connection weight table; constructing a DAG graph of the interpolation task and inputting it into the HEFT algorithm to generate a task order and node allocation table; and performing candidate frame correction, splicing, and encoding to generate an interpolated video stream. This invention addresses the problems of computational redundancy in video frame interpolation under fluctuating edge node computing power, unstable interpolation in complex motion regions, and discontinuous temporal sequence connection between adjacent segments by introducing an improved PWC-Net network and the HEFT algorithm.

The present application discloses an image processing method, device and storage medium based on open vocabulary, which relates to the technical field of three-dimensional mapping. The method includes: based on the current frame collected by the robot, obtaining the instance area and instance name corresponding to each first instance object, and inputting them into the large language model to obtain the position relationship description text and object attribute description text of the first instance object; obtaining the local point cloud map and the global point cloud map of the current frame; searching for the first target instance object matching any first instance object in the global point cloud map to perform point cloud merging operation and text merging operation, and updating the global point cloud map; the point cloud merging operation is used to merge the point clouds of the instance objects; the text merging operation is used to merge the position relationship description text, object attribute description text and instance name of the instance objects respectively. In this way, the mapping accuracy can be improved, and the environment can be parsed into a semantically rich and structured three-dimensional scene map.

The invention discloses an X-ray image splicing method and device and an X-ray photography system. The X-ray image splicing method comprises the steps that multiple to-be-spliced X-ray images of a splicing body position are obtained, a candidate splicing area of at least one X-ray image is obtained, the multiple X-ray images are displayed on a splicing planning interface, and the candidate splicing area is marked; receiving an operation of an operator on the splicing planning interface, and determining a region of interest in the candidate splicing region; and splicing the plurality of X-ray images based on the region of interest to obtain a spliced image of the spliced body position. According to the method, the region of interest is determined in the overlapping region or the candidate splicing region, and then the X-ray images are spliced based on the region of interest, so that the ghosting problem of anatomical structures / tissues concerned by an operator in the spliced image is reduced; and the definition of a ghosting problem of anatomical structures / tissues concerned by an operator in a spliced image is improved.

The present invention discloses an optical system and a head-mounted display device, comprising a first lens, a second lens, a third lens, a semi-reflective semi-transmissive film, a first composite film layer, a display screen and a second composite film layer, wherein the first lens comprises a first light-emitting surface and a first light-entering surface; the second lens comprises a second light-emitting surface and a second light-entering surface; the third lens comprises a third light-emitting surface and a third light-entering surface, the first light-entering surface and the second light-emitting surface are engaged with each other, the second light-entering surface and the third light-emitting surface are glued together, the first composite film layer is attached to the surface of the first light-entering surface, the second composite film layer is attached to the display screen, and the light emitted by the display screen is refracted and reflected multiple times in the semi-reflective semi-transmissive film, the third lens, the second lens, the first composite film layer and the first lens, and finally emitted from the first light-emitting surface and merged into the human eye. The advantages of the present invention are that the optical information transmission capability, weight and volume are balanced and taken into consideration, and the optical imaging effect is excellent.

The invention provides a video time sequence consistency restoration method based on residual guided diffusion and cross-frame attention distillation, and relates to the technical field of video image restoration. The method comprises the following steps: constructing a degeneration-clear frame pair data set, and a teacher network and a student network containing a coding-decoding diffusion denoising backbone network; generating a noise-added image sequence; performing residual scale modulation through a residual scale prediction module to obtain a first restored feature sequence, and performing cross-frame attention fusion to obtain a second restored feature sequence; respectively outputting a teacher recovery result sequence and a student recovery result sequence; and constructing a total loss function containing reconstruction loss, distillation loss and time consistency loss in combination with the degradation-clear frame pair and the two types of restoration results, iteratively optimizing the student network, and restoring the video to be restored to obtain a target restored video sequence. According to the method, the ubiquitous problems that residual error utilization is not adaptive, time sequence modeling is insufficient and distillation lacks structure maintenance in an existing video restoration method are solved.

The single-mirror coaxial schlieren imaging method for observing vortex structure in a shock tube belongs to the technical field of fluid flow experiment test, and relates to a single-mirror coaxial schlieren imaging method for observing vortex structure in a shock tube. The method integrates a point light source and a blade to construct an integrated coaxial light source, and uses a schlieren mirror, a shock tube and a high-speed camera to build a single-mirror coaxial schlieren imaging system. In the system, the incident light of the point light source is reflected by the schlieren mirror, passes through the flow field in the shock tube and is focused on the tip of the blade. The blade is used to interfere with the focal point. Because the airflow density in the shock tube is different, the refractive index of the light is different, different schlieren gray images with different light and dark degrees are formed, and the high-speed camera is used to record the change of the vortex structure in the shock tube. The method is easy to debug and saves a lot of experimental debugging time. On the basis of ensuring the light intensity, the influence of ghosting and astigmatism is reduced, and the schlieren imaging of the vortex structure in the shock tube is accurate and clear.