16results about How to "Eliminate ghosting" patented technology

This invention discloses a reflective film for automotive applications and a display structure for eliminating ghosting, belonging to the field of automotive displays. It includes a first liquid crystal layer and a second liquid crystal layer. The first liquid crystal layer has a direction pointing in the same direction and a thickness of 1 / 4 waveplate. The second liquid crystal layer is a reflective layer with a spiral structure in the longitudinal direction. The first liquid crystal layer is bonded to the windshield. The reflective film reflects the light beam generated by the display device incident at Brewster's angle inside the vehicle, reducing the energy of the beam that causes ghosting and eliminating it. For natural light from outside the vehicle, it only reflects P-polarized light with a wavelength close to that of the display device, while allowing other wavelengths and polarization directions of natural light to pass through, giving the automotive reflective film both high reflectivity and high transmittance.

The invention relates to the field of indoor mapping, discloses a mobile robot indoor mapping method based on multi-sensor fusion, and relates to the technical field of mobile robot navigation. The method comprises the following steps: an upper computer processing module collects data of a wheel type odometer, inertia measurement and a laser radar and carries out time alignment; calculating a state prediction value based on a kinematic model, and generating a posterior state estimation value by using extended Kalman filtering and fusing multi-source observation data; the current active local sub-graph is obtained by taking the current active local sub-graph as an initial value, a continuous probability map model based on bicubic interpolation is constructed, and an optimal matching pose is solved by utilizing a nonlinear optimization algorithm; and updating the probability grid map based on the optimal pose, and generating an indoor map through multi-resolution loopback detection and global pose map optimization introducing a robust loss function. According to the method, slipping and zero offset errors are effectively compensated, the problem that gradient optimization cannot be carried out on a discrete map is solved, and the robustness and precision of indoor mapping are improved.

The application discloses a kind of multi-channel optical imaging system and device of wafer defect detection, it is related to semiconductor detection field.The system includes the objective lens, DIC prism and independent bright field, dark field, fluorescence PL imaging channel arranged in sequence.Wherein, after dark field and PL light are collected by objective lens, single pass through DIC prism is split into vertical o light and e light, and is transmitted along the same light path.The core is that polaroid is arranged between the DIC prism of dark field or PL channel and camera, so that its optical axis is collinear with DIC prism, and the light entrance surface is perpendicular to the light path.Rotating polaroid can only allow o light or e light single beam to be transmitted to camera, effectively eliminates ghosting, solves the problem of over-checking of particle defects, and improves the imaging clarity and detection accuracy of subsurface defects.

According to the coated glass and the laminated glass provided by the invention, the functional layer and the optical reflecting layer are arranged in the glass structure, the function of a film on the surface of the glass is increased by introducing the functional layer with a multi-layer composite function, and in addition, the reflectivity of optical projection of the glass is adjusted by arranging the optical reflecting layer, so that ghosting elimination and brightness improvement are facilitated; and the projection display quality is improved. Therefore, fusion of a projection function and various optional functions such as ultraviolet isolation, electric heating and infrared heat insulation can be realized. In addition, the wear resistance, scratch resistance, environment resistance, high and low temperature resistance, moisture resistance and other properties of the glass structure can be improved by additionally arranging a low-reflection hardening layer and a waterproof wear-resistant layer.

The application relates to the technical field of image communication, in particular to a video slow-motion frame insertion playback system based on a generative adversarial network, which comprises a video signal acquisition module, a signal processing module, a frame rate conversion module and a playback encoding output module. The acquisition module outputs an original video frame sequence through a ring buffer; the processing module parallelly separates a detail component after denoising and an edge gradient feature; the frame rate conversion module uses a geometric structure as a boundary locking condition, guides the detail component to execute nonlinear motion compensation and intermediate frame reconstruction; and the playback module executes time base remapping and distributed encoding transmission. Through a structure constraint texture depth generation architecture, in combination with a space-time consistency check and a nearest neighbor pixel backfilling mechanism and a virtual time base rate decoupling technology, the application realizes real-time slow-motion video review for high-speed moving targets with high signal-to-noise ratio and no artifacts.

This invention discloses a multi-pattern switching device for sights, relating to the field of optical aiming equipment technology. The device includes a prism, a splitting plate, two sleeves, two LED lights, and a lens. The splitting plate has concentric, heterogeneous first and second patterns. The two sleeves are concentrically nested outside the prism, forming independent optical path channels. The two LED lights correspond one-to-one with the patterns and can be configured with different colors, allowing independent control of their on / off state and brightness. The two sleeves define the corresponding LED light paths, achieving crosstalk-free light projection. After refraction by the prism and imaging by the lens, arbitrary combinations and switching of multi-color and multi-pattern splitting patterns can be achieved. This device requires no disassembly or calibration, has a fast switching response, and provides clear pattern boundaries, significantly improving the sight's adaptability and aiming accuracy, and is suitable for various shooting equipment.

The invention discloses a cultural heritage three-dimensional digital reconstruction display method and system, and relates to the technical field of computer vision, and the method comprises the steps: constructing a multi-dimensional radiation distribution data set containing an observation angle and radiation intensity; calculating a surface displacement rate and an observation angle conversion rate of the radiation peak value, and determining a highlight migration characteristic according to a ratio of the two; generating a mask and decoupling to generate an initial diffuse reflection texture and material parameter map; further performing orthogonal decomposition on the difference vector based on a reference illumination direction, and performing anisotropic compensation on the texture by using a vertical component to generate a target texture; rendering the initial three-dimensional geometric model according to the target texture and the material parameter map to generate a three-dimensional digital reconstruction model; through physical optical decoupling and vector compensation, the problems of dynamic highlight misjudgment and inherent texture loss are effectively solved, and high-fidelity three-dimensional digital reconstruction is realized.

This invention relates to the field of image processing technology, specifically providing an image display method, system, device, and medium based on a multi-layer transparent display screen. The method includes: obtaining the number of display screen layers of the display device, and setting the number of image segmentation layers based on the number of display screen layers and image content, wherein the number of segmentation layers does not exceed the number of display screen layers; assigning one or more labels to each pixel of the image using a deep learning model, wherein the labels indicate the corresponding display screen layer index, and the labels and display screen layer indices have a mapping relationship; grouping the image into multiple sub-images according to the labels, each sub-image corresponding to a display screen layer index; performing transparent background completion processing on the sub-images to optimize the display effect; and outputting the processed sub-images to the corresponding display screen layers according to the display screen layer indexes corresponding to the sub-images. This invention achieves pixel-level intelligent layering through a deep learning model, significantly improving the quality of multi-layer transparent displays.

The application provides an image synthesis method and device and electronic equipment. The method comprises the following steps: inputting multiple images into multiple parallel encoder branches in an image synthesis model respectively to obtain corresponding encoding features of each image, wherein the encoder branch comprises a preprocessing layer and N encoders, and the encoder comprises M Transformers and a downsampling layer in sequence; inputting the encoding features of the multiple images into a feature fusion module of the image synthesis model to obtain corresponding fusion features of the multiple images, wherein the feature fusion module comprises at least one Transformer; and inputting the fusion features into a decoder branch of the image synthesis model to obtain a synthesis image, wherein the decoder branch comprises N decoders and an output mapping layer, and the decoder comprises an upsampling layer and M Transformers in sequence, so that the ghosting phenomenon of the synthesis image is reduced.

This invention belongs to the field of laser micromachining and relates to a coaxial monitoring system for ultrafast laser micromachining. The system includes an ultrafast laser, a beam-splitting plate, a laser focusing lens, an intermediate lens group, a filter, a fixed-magnification telecentric lens, and a high dynamic range camera. The ultrafast laser emits ultrafast laser light. The beam-splitting plate and the laser focusing lens are arranged sequentially from front to back along the optical path of the ultrafast laser. The laser focusing lens focuses the ultrafast laser light onto the workpiece, generating visible monitoring light on the workpiece. The visible monitoring light passes through the laser focusing lens and is reflected by the beam-splitting plate to form reflected visible monitoring light. The intermediate lens group, filter, fixed-magnification telecentric lens, and high dynamic range camera are arranged sequentially from front to back along the optical path of the reflected visible monitoring light. This invention provides a coaxial monitoring system for ultrafast laser micromachining that improves imaging clarity and resolution.

This application discloses a liquid crystal zoom lens, a liquid crystal control method, and a zoom optical device, relating to the field of optical technology. In the disclosed liquid crystal zoom lens, a first transparent electrode and a second transparent electrode are arranged opposite each other, and a third transparent electrode and a fourth transparent electrode are arranged diagonally. The first transparent electrode and the second transparent electrode constitute a main driving electrode pair; the third transparent electrode and the fourth transparent electrode constitute a pretilt electrode pair. This application first controls the liquid crystal molecules in the liquid crystal layer to form a uniform pretilt angle when the pretilt electrode pair receives a first voltage, thus enabling the liquid crystal molecules to form a stable initial orientation state. Subsequently, when the main driving electrode pair receives a second voltage, it controls the liquid crystal molecules at the pretilt angle to flip along a preset direction, thereby avoiding random orientation behavior of the liquid crystal molecules during zooming, eliminating optical defects such as ghosting and glare, and effectively improving the visual experience.

The invention provides an image fusion method based on a differential thought, and the method comprises the steps: obtaining an extended and cut target image block as a processing starting point, preserving the edge and context information of an original image, carrying out the bidirectional verification matching of multi-scale feature points, improving the matching reliability, and generating an initial spliced image based on accurate geometric transformation. Quantitative analysis is carried out by dividing sub-regions and calculating a pixel mean value, finally, pixel values of the sub-regions are dynamically adjusted according to mean value differences, splicing is carried out again, and smooth optimization is directly carried out on splicing seams. Multi-scale features and bidirectional verification enhance the adaptability of the algorithm to different image qualities and scenes, a differential adjustment strategy acts on local splicing seams, ghosting and brightness discontinuity can be effectively eliminated, meanwhile, image details are kept, and then high-quality and high-efficiency image superposition is achieved.

This application provides laminated glass, a projection system, and a vehicle. The laminated glass includes a first glass plate, an intermediate adhesive layer, a second glass plate, a functional layer, and an adjustment layer. This application achieves image clarity by setting a first wedge shape and defining a first preset range, ensuring that the reflected primary image and the reflected secondary image of the functional layer coincide. Furthermore, the reflective nature of the functional layer enhances brightness. The high degree of overlap between the reflected primary image and the reflected secondary image facilitates color correction of the superimposed image, resulting in a better color-shift-free display. Additionally, the adjustment layer significantly reduces the brightness of the reflected secondary image of the glass plate, even eliminating ghosting, thus avoiding image blurring caused by insufficient overlap between the reflected secondary image and the primary image. This results in a clear display image and improved driving safety.

The application discloses a multi-scale lining image splicing method in a tunnel detection parallax scene and a computer program product, relates to the technical field of computer vision, and solves the technical problem that a lining image splicing method has poor adaptability and is difficult to guarantee the quality of lining image splicing. The method comprises the following steps: performing feature map matching on a first image and a second image to obtain an initial global homography matrix; performing multi-scale matrix iterative optimization and global alignment feature map generation to obtain an optimal global homography matrix; performing local non-rigid adjustment on the second image through a TPS interpolation algorithm; extracting an initial mask from the registered first image and the second image, and generating a joint mask; searching for optimal seam lines in the joint mask to generate a content mask; and performing fusion processing on the registered first image and the second image based on the content mask, and outputting a panoramic image. The application has good adaptability to scenes with different parallax degrees, and the quality of lining image splicing is greatly improved.

The invention discloses a long-term semantic VSLAM method and system for dynamic accumulated noise suppression and ghosting elimination, and relates to the technical field of robot visual navigation and map construction, and the method comprises the following steps: collecting a current frame image in the continuous inspection process of a robot, and carrying out the processing of the current frame in the processing of the current frame; semantic mask extraction based on the instance segmentation model and dense optical flow field calculation based on the current frame and the previous key frame are executed in parallel; according to the method, potential dynamic object categories and accurate contours in the images can be recognized by adopting the YOLACT instance segmentation model, the large displacement situation possibly brought by the motion of the robot is coped with by combining a parallel execution optical flow estimation algorithm, semantic understanding of the environment and accurate synchronous capture of motion information are achieved, and the method has the advantages of being high in practicability and high in practicability. And the optical flow generated by the motion of the object and the background optical flow caused by the motion of the camera are effectively distinguished by measuring and analyzing the direction consistency of the optical flow vector, so that the accuracy and robustness of dynamic judgment are improved.

The invention relates to the technical field of three-dimensional image display, and discloses an image crosstalk compensation device and method for a backlight modulation type naked eye three-dimensional displayer, and the device comprises a depth camera, a control unit, a liquid crystal panel, a lens array, a liquid crystal light valve and a backlight source which are sequentially stacked in the light path propagation direction. The control unit is configured to: store a crosstalk model pre-established based on optical characteristics of the device and a corresponding compensation lookup table; receiving eye position information collected by a depth camera; and generating and outputting a driving signal based on the eye position information, the binocular image data to be displayed and the brightness compensation lookup table so as to synchronously control the on-off of the backlight source, the local modulation state of the liquid crystal light valve and the gray value of the display image on the liquid crystal panel. According to the invention, the non-linear reverse compensation model is established, and the lookup table and the control unit are combined to convert the non-linear reverse compensation model into high-precision compensation capable of running in real time, so that the depth sense, definition and stability of a naked-eye three-dimensional display picture are effectively improved.