1477 results about "Orthographic projection" patented technology

Calibration structure, method, and code for correcting non-orthogonal misalignment of a computer-generated image that is projected onto a large screen touch-detecting display, so that a computer-generated image appears substantially where the display is touched. Structure / method / code generates at least four calibration marks, respectively, substantially proximate four corners of a projected image to be displayed on the display. Structure / method / code, responsive to a touch on the large screen touch-detecting display where each of the four calibration marks is displayed, identifies horizontal and vertical coordinates of each touched location. Structure / method / code calibrates the projected image to the display after the four calibration marks have been touched. Structure / method / code, responsive to another touch on the display after calibration, displays a computer image substantially at the location of the another touch.

Techniques to present hierarchical information as orthographic projections are described. An apparatus may comprise an orthographic projection application arranged to manage a three dimensional orthographic projection of hierarchical information. The orthographic projection application may comprise a hierarchical information component operative to receive hierarchical information representing multiple nodes at different hierarchical levels, and parse the hierarchical information into a tree data structure, an orthographic generator component operative to generate a graphical tile for each node, arrange graphical tiles for each hierarchical level into graphical layers, and arrange the graphical layers in a vertical stack, and an orthographic presentation component operative to present a three dimensional orthographic projection of the hierarchical information with the stack of graphical layers each having multiple graphical tiles. Other embodiments are described and claimed.

A projector which projects an image onto a projection surface, and displays it thereon, includes: a light source; a light modulator which modulates light from the light source into an image light representing the image; a projection optical system which projects the image light modulated by the light modulator onto the projection surface; a keystone distortion correction section which carries out a keystone distortion correction process for correcting a keystone distortion of the image projected onto the projection surface; a detection section which detects a stop of a movement of the projector; and a control section which, on the stop of the movement of the projector being detected in the detection section, causes the keystone distortion correction section to start the keystone distortion correction process in accordance with a relative positional relationship between the projector after being moved and the projection surface.

The embodiment of the invention provides an array substrate, a display device, and a pattern recognition method therefor, and relates to the technical field of fingerprint recognition. The pattern recognition can be achieved in a display region of the display device, and the implementation of a narrow frame is facilitated. The array substrate comprises a plurality of light-emitting devices which are disposed on the substrate, and are located in a display region. The array substrate also comprises a shading layer which is disposed on the substrate. The shading layer is used for the shading of the light with at least one primary color, and the shading layer is provided with a plurality of imaging holes located in the display region, wherein the imaging holes are not overlapped with the orthographic projection of the light-emitting devices on the substrate. The array substrate also comprises a pattern recognition layer disposed below the shading layer, and the pattern recognition layer comprises sensor units corresponding to the imaging holes. The light emitted by at least one light-emitting device located around one imaging hole can be reflected to pass through the imaging holes to arrive at the sensor unit through a to-be-recognized body at a display side of the display device. The array substrates is used for achieving the pattern recognition in the display region.

An image projector that modifies projected images. An imaging device preferably senses information about a projection screen upon which an image is projected. Based on the sensed information about the projection screen, the projector modifies the image in a desired manner, such as rescaling, or correcting distortion in, the projected image.

The invention provides a road marking acquisition method based on orthographic projection and a device and belongs to the image and video technology field. The method comprises steps that, a camera device mounted on an acquisition vehicle is utilized to acquire road images, and a target image is acquired; image processing on the target image is carried out to acquire the position of a road edge in the target image; the position of a road can be determined according to the position of the road edge in the target image, characteristic point extraction from the target image is carried out based on the position of the road to acquire calibrated characteristic points; a conversion relation between a camera device coordinate system and a space coordinate system is acquired according to the calibrated characteristic points, and a reverse perspective transformation matrix is generated; picture transition for the target image is carried out according to the reverse perspective transformation matrix, and a front view of the target image is acquired. Through the method, real-time road marking acquisition is realized, calibration, rectification and front view generation are automatically realized, subsequent processing time is greatly saved, and manpower and material resources are greatly saved.

The invention discloses a display panel and a display device. The invention belongs to the technical field of display, the display panel comprises a substrate, an array layer, a fingerprint recognition layer and a color film substrate, the color film substrate at least comprises a first shading layer, the first shading layer comprises a plurality of first shading parts, the fingerprint recognitionlayer comprises a plurality of photosensitive devices, and the orthographic projections of the photosensitive devices to the substrate and the orthographic projections of the first shading parts to the substrate are at least partially overlapped; a plurality of imaging holes are formed in the first shading layer, and the orthographic projection of the imaging holes to the substrate is located within the range of the orthographic projection of the photosensitive device to the substrate; and at least part of light on the side, deviating from the underlayer substrate, of the color film substrateis projected to the photosensitive device through the imaging hole. The display device comprises the display panel. The display panel can be thinned, the resolution of the display panel can be prevented from being affected, and the fingerprint recognition effect of the display panel can be improved by utilizing the principle of pinhole imaging.

A method of and a system for variable pitch CT scanning for baggage screening and variable pitch image reconstruction are disclosed. The method comprises decelerating conveyor belt speed when additional time is needed to render a decision on a complex bag; accelerating conveyor belt speed to its normal speed when decisions are reached on undecided bags; generating cone-beam projection data at variable scanning pitch corresponding to variable conveyor belt speed; computing a tilt angle and a distance offset for each tilted slice using the pitch values at which the cone-beam projection data is acquired for that tilted slice; generating fan-beam projection data for each tilted slice using the tilted angle and the distance offset; generating correction projection data to compensate for the error between the source trajectory and the tilted reconstruction plane; generating the corrected fan-beam projection data by adding the correction projection data to the fan-beam projection data; reconstructing tilted slices using the corrected fan-beam projection data; and interpolating the reconstructed tilted slices into axial slices.

The invention discloses a display panel and a display device. The display panel comprises at least one bending area, and the display device further comprises a substrate; a stress release layer, wherein at least one first groove is formed in the stress release layer, and the first groove is located in the bending area, and a first notch is formed on a first surface of one side, close to the coverplate, of the stress release layer. The first groove is filled with a flexible material, and the elastic modulus of the flexible material is less than that of the stress release layer. The display panel also comprises the cover plate which is located at one side of the substrate, wherein the stress release layer is located at one side, close to the substrate, of the cover plate, and at least one second groove is formed in the cover plate. The second groove is provided with a second notch in the second surface, close to one side of the stress release layer, of the cover plate, and the orthographic projection of the second notch and the orthographic projection of the first notch on the substrate are overlapped. According to the display device, the problems that module materials in the display device are broken and the display device is layered when the display device is bent are solved, and the display effect of the display device is improved.

Methods for empirical determination of a correction function for correcting beam hardening and stray beam effects of water-equivalent tissue in projection radiography or computed tomography using an imaging detector, and apparatuses for implementing the same are disclosed. The projection values obtained from the logarithmic values of the detector signals are corrected, the corrected projection values being represented by a correction function dependent on the tube voltage applied during the X-ray projection recording, the coefficients of which function are determined from a single calibration scan on an object-like calibration phantom made of water-like material.

To provide an image processing system and the like which can correct a distortion in a projected image automatically and adequately, a projector has an area sensor section which senses a sensing region onto which an image is projected and outputs sensing information; a storage section which stores angle correction data in which the ratio of average luminance values for a plurality of different regions in the projection area is associated with derivation coordinates for deriving coordinates of the projection area, and also stores coordinate data indicating the derivation coordinates for the projection area; luminance-distribution analyzing section which refers to the angle correction data based on the sensing information and depending on the luminance distribution in the projection area and corrects the derivation coordinates in the coordinate data, based on the angle correction data; and a distortion correction section which corrects the image signals so that the distortion in the projected image is corrected, based on the coordinate data.

The invention discloses a high-gain novel orthographic projection ultra short-focus screen. The high-gain novel orthographic projection ultra short-focus screen comprises a Fresnel cylindrical layer,a pigmented layer, a base layer, a scattering layer, a circular Fresnel lens layer and a reflecting layer which are sequentially bonded. The Fresnel cylindrical layer comprises several Fresnel lens cylindrical tooth units which are vertically arranged, all the cylindrical tooth units are connected with one another and are sequentially arranged in an array, and the work surface of each cylindricaltooth unit is provided with at least one cylindrical lens unit which is vertically arranged. The Fresnel cylindrical layer combines cylindrical Fresnel lenses and cylindrical lenses, and therefore theFresnel cylindrical layer has advantages of the cylindrical Fresnel lenses and the cylindrical lenses, and can help the circular Fresnel lens on the back of the screen to control light emitted by a projector in the horizontal direction to some extent; at the same time, by employing the cylindrical lenses, the visual angle in the horizontal direction can be increased, on the premise that the horizontal visual angle keeps constant, the concentration of scattering diluents in the screen scattering layer can be reduced, the upper and lower visual angle of the screen can be reduced, and the gain is increased.

A method is provided. The method includes acquiring projection data of an object from a plurality of pixels, reconstructing the acquired projection data from the plurality of pixels into a reconstructed image, performing material characterization and decomposition of an image volume of the reconstructed image to reduce a number of materials analyzed in the image volume to two basis materials. The method also includes generating a re-mapped image volume for at least one basis material of the two basis materials, and performing forward projection on at least the re-mapped image volume for the at least one basis material to produce a material-based projection. The method further includes generating multi-material corrected projections based on the material-based projection and a total projection attenuated by the object, which represents both of the two basis materials, wherein the multi-material corrected projections include linearized projections.

The invention provides a display panel, a manufacturing method thereof and a display device, relates to the technical field of the display, and aims to solve the problem that in the use process of a display product, water molecules in a flat layer escape and erode a light-emitting functional layer, so that the service life of the display product is shortened. The display panel comprises a substrate and a plurality of pixel units arranged on the substrate, the plurality of pixel units are distributed in an array, and each pixel unit comprises a plurality of sub-pixels; each sub-pixel comprisesa sub-pixel driving circuit, a flat layer and an anode pattern which are sequentially stacked; the anode patterns in at least part of the sub-pixels comprise middle parts and edge parts surrounding the middle parts; the surfaces, back to the substrate, of the flat layers are provided with grooves, the orthographic projections of the grooves on the substrate surrounds the orthographic projections of the middle parts on the substrate, and the orthographic projections of at least parts of the edge parts on the substrate are located in the orthographic projections of the grooves on the substrate.The display panel provided by the invention is used for displaying pictures.

The embodiment of the invention provides a display panel, and the display panel comprises a substrate, pixel definition layers arranged on the substrate, an organic light-emitting device arranged between the pixel definition layers, an encapsulation layer arranged on the pixel definition layers and the organic light-emitting device, and a color film structure layer arranged on the encapsulation layer. The color film structure layer comprises a plurality of color resistance layers, wherein the orthographic projection area of the color resistance layers on the substrate coincides with the orthographic projection area of the organic light-emitting device on the substrate, and the face, away from the organic light-emitting device, of each color resistance layer is a concave face. The inventionfurther discloses a manufacturing method of the display panel and a display device. Due to the fact that the thicknesses of the color resistance layers in the direction perpendicular to the substratebase plate are not equal, the light can be diffused after passing through the color resistance layers, the light entering human eyes under different visual angles is correspondingly compensated, andthe white balance is adjusted; meanwhile, the color gamut improvement under different visual angles is facilitated, and the user experience is improved.

The invention discloses a display panel which comprises a substrate, a first metal layer which is on a side of the substrate and includes a gate of a driving transistor, a second metal layer which ison a side of the first metal layer away from the substrate and includes a first base plate of a storage capacitor, a third metal layer which is on a side of the second metal layer away from the substrate and includes a data line, and a first shielding electrode which has a fixed potential, wherein an orthographic projection of the first base plate on the substrate partially coincides with an orthographic portion of the gate on the substrate, an orthographic projection of the data line on the substrate does not coincide with an orthographic projection of the gate on the substrate, and an orthographic projection of the gate on the substrate is in orthographic projections of the first shielding electrode and the first base plate on the substrate. In the above manner, the coupling capacitancebetween the gate of the driving transistor and the data line can be reduced, and therefore, the crosstalk phenomenon is reduced.

An orthographic projectional correction method of a close shot photogrammetric image used in an industry relates to the technical field of an image processing and solves the technical problems that the accuracy and the efficiency of the photogrammetric image are low; the orthographic projectional method creates a back projection transformational model by utilizing a shooting distance, a shooting angle and an imaging law of an isometric object; the steps of the method are as follows: 1) an extreme value of a ratio relation of an image size of the isometric object and a vertex angle along the horizontal direction of a camera lens are respectively obtained; 2) corresponding relations between the four pairs of points C-c, D-d, E-e and F-f are obtained: 3) by the back projection transformation, an area abcd of the image is converted into the ladder-shaped area ABCD. The orthographic projectional correction method of the invention has the advantages that the accuracy and the efficiency of an automatic decoding algorithm are enhanced, a work load of a data acquisition and the time of a data processing are reduced, an utilization ratio of an encoding mark in the single image is improved, and the labour intensity of the on-the-spot data acquisition is also reduced.

The invention discloses a display panel and a display device. The display panel includes comprises a first display area and a second display area, wherein the second display area comprises a pluralityof light-transmitting areas and a plurality of pixel unit areas; a first wiring area is arranged in the first direction; the first wiring area is connected with the adjacent pixel unit areas in the first direction; a second wiring area is arranged in the second direction; the second wiring area is connected with the adjacent pixel unit areas in the second direction, and the first direction and the second direction intersect; and a first gap exists between every two adjacent first wires in the first wiring area, and a second gap exists between every two adjacent second wires in the second wiring area. The display panel further comprises a substrate and a touch function layer, wherein the orthographic projection of the touch function layer on the substrate covers the orthographic projectionof the first gap and the orthographic projection of the second gap on the substrate. According to the embodiment of the invention, the gaps existing in the wiring area are shielded through the touchfunction layer, and the imaging quality is effectively improved.

The invention provides a panoramic image acquisition device and method. The panoramic image acquisition device comprises a photosensitive imaging unit, a lens and a two-way reflector; the two-way reflector comprises two mirror surfaces; a set included angle is formed between the two mirror surfaces; the lens is located below the two-way reflector; and the lens is located in an orthographic projection direction of the two-way reflector. With the panoramic image acquisition device and method provided by the invention adopted, the same camera can perform image acquisition in different directions of a road simultaneously, so that photographing and evident tacking can be performed on the head and tail of a car.

The invention provides a display device and a polarizer. In the display device, the polarizer is provided with a first surface and a second surface which are parallel to a plane where the polarizer islocated. The polarizer is provided with a through hole penetrating through the first surface and the second surface, the boundary formed by the through hole on the first surface is a first boundary,the boundary formed by the through hole on the second surface is a second boundary, and the orthographic projection of the first boundary on the plane where the second surface is located is located onthe inner side of the second boundary and does not make contact with the second boundary. For the boundary formed by the through hole on any two planes parallel to the plane where the polarizer is located, the orthographic projection of the boundary close to the first surface on the plane where the boundary far away from the first surface is located does not exceed the boundary far away from thefirst surface. By applying the display device, the problem of bubbles when a via hole is filled with a liquid optical adhesive can be solved.

The embodiment of the invention discloses a display panel. The display panel comprises a first display area, a third display area and a second display area which are sequentially and adjacently arranged. The display panel comprises a substrate, a pixel definition layer and an inhibition layer, wherein the pixel definition layer and the inhibition layer are sequentially arranged on one side of the substrate; a gap area is arranged between two adjacent pixel openings on the pixel definition layer, and the inhibition layer is located in the gap area; the inhibition layer comprises a first cathode inhibition layer located in the first display area and a second cathode inhibition layer located in the third display area; and the ratio of the area of the orthographic projection of the second cathode inhibition layer on the substrate to the area of the third display area is smaller than the ratio of the area of the orthographic projection of the first cathode inhibition layer on the substrate to the area of the first display area. By arranging the third display area playing a transition role, on the premise that the light transmittance of the first display area is improved through the inhibition layer, the brightness difference of all the display areas is reduced, and therefore the display effect is improved.

The invention provides a touch display substrate which comprises a plurality of touch electrodes and a plurality of touch signal lines, wherein the touch electrodes and the touch signal lines are formed on a base substrate, each touch electrode is electrically connected with at least one of the touch signal lines, each touch signal line comprises a first part and a second part which are arranged on different layers, the first part is electrically connected with the second part by via holes, the first part and a first layer metal graph of the touch display substrate are arranged on the same layer and made from the same material, the second part and the second layer metal graph of the touch display substrate are arranged on the same layer and made from the same material, the orthographic projection of at least one part of the first part on the base substrate coincides with the orthographic projection of the second layer metal graph on the base substrate, or the orthographic projection of at least one part of the second part on the base substrate coincides with the orthographic projection of the first layer metal graph on the base substrate. According to the technical scheme, the touch signal lines can be formed on the premise that the picture composition process is not added, and the influence to the aperture opening ratio of the touch display device can be reduced.

The present invention discloses one kind of air knife for controlling galvanized coating thickness, and the air knife can inhibit side thickness fault of hot galvanized plate effectively. The air knife includes one air knife body, one upper knife lip and one lower knife lip fixed onto the air knife body and forming in the front ends one longitudinal air knife gap in a parabolic orthographic projection. The present invention is superior in that the air knife gap can spray airflow acting homogeneously to the surface of the band steel in the whole length of the zinc solution solidifying line to inhibit side thickness fault of hot galvanized plate effectively, and that the air knife gap has conveniently adjustable parabolic profile for fitting different sizes of hot galvanized plate.

The invention provides an OLED display substrate and a preparation method thereof and a display device. The OLED display substrate comprises a base, an inorganic layer arranged on the base and a light-emitting unit. The light-emitting unit is arranged on one side, away from the base, of the inorganic layer; one side, away from the inorganic layer, of the base is provided with a camera; and the orthographic projection area of the camera on the base is within the area of the light-emitting unit, and no light-emitting unit is retained in the orthographic projection area. The light-emitting unit comprises a light-emitting structure. A protection layer is arranged in the orthographic projection area and at the side, away from the base, of the inorganic layer. The protection layer can protect the inorganic layer in the orthographic projection area when the light-emitting structure in the orthographic projection area is removed through laser cutting to prevent the inorganic layer in the orthographic projection area from warping and cracking.

The invention discloses a multichannel projection geometric correction and edge blending efficient method based on NURBS curved surfaces. The method is mainly characterized by comprising the steps of geometric correction of the projection of a multichannel curved surface curtain, edge blending among projection display channels and elimination of unnecessary images exceeding edges of a display area. The novelty of the method lies in that continuity of the curved surface curtain and good fitting performance of the NURBS curved surfaces are fully considered, the advantage that the NURBS curved surfaces can be controlled easily is utilized, edge blending among the projection display channels is achieved through algorithms like correction on edge images (img file='dest_path_image002. TIF' wi='57' he='20' / ) of adjacent channels, and therefore continuous display of images of multiple projection channels is achieved. The method is especially suitable for display of continuous scenes on curved surface curtains like spherical curtains and columnar curtains through a plurality of projectors, and has the advantages of being good in real-time performance, small in geometric distortion and good in platform compatibility.

The embodiment of the invention provides a display panel and a display device, relates to the technical field of display, and improves the touch precision and mechanical strength of the display panel on the premise of reducing parasitic capacitance of a touch layer and a first electrode. The display panel comprises a pixel definition layer, a light-emitting unit, a first supporting column and a touch layer. The light-emitting unit comprises a first electrode, a light-emitting layer and a second electrode. The first supporting column is located between the pixel defining layer and the first electrode, and the first supporting column is located in the non-opening area of the pixel defining layer; the first electrode covers the light-emitting layer and the first supporting column; the touch layer is located on the side, away from the pixel defining layer, of the first electrode. The touch layer comprises a hollow part, and a first part and a second part which are connected with each other; the orthographic projection of the first part and the orthographic projection of the hollow part are overlapped with the orthographic projection of the first supporting column, the orthographic projection of the second part is not overlapped with the orthographic projection of the first supporting column, and the area of the orthographic projection of the overlapped part of the first part and the first supporting column is smaller than that of the orthographic projection of the first supporting column.

An illumination apparatus includes an outer housing, a heat dissipation base, a plurality of heat dissipation fins, and a light source. The outer housing has a bottom wall with an air inlet and an opening. The heat dissipation base is connected to the bottom wall. The heat dissipation fins are connected to the heat dissipation base and the heat dissipation fins are substantially parallel to each other. Each of the heat dissipation fins has a concave and the concaves of the heat dissipation fins cooperatively form a groove. The orthographic projection area overlaps the air inlet. The light source is connected to the heat dissipation base and exposed through the opening. The illumination apparatus has a good heat dissipation efficiency.