131 results about "Surface depth" patented technology

The present invention is a method for producing an absorbent article. A wet resillient, cellulosic basesheet having elevated and depressed regions with an Overall Surface Depth of at least 0.2 mm is prepared. The cellulosic basesheet has an upper surface and a lower surface. A contiguous, fibrous nonwoven web having a plurality of openings is integrally attached onto the upper surface of the cellulosic basesheet such that a portion of the openings are superposed over the depressed regions of the cellulosic basesheet. An absorbent core and an impervious web are attached to the lower surface of the cellulosic basesheet such that the absorbent core is sandwiched between the impervious web and the cellulosic basesheet.

One embodiment of the present invention is an endless non-woven tissue making fabric having a three-dimensional texture suitable for use as a fabric for producing three-dimensional fibrous webs. The endless non-woven tissue making fabric comprises a plurality of substantially parallel adjoining sections of non-woven material. Each section of non-woven material has a width substantially less than the width of the non-woven tissue making fabric. Each section of non-woven material may be joined to at least one other adjoining section of non-woven material. The non-woven tissue making fabric has a machine direction, a cross-machine direction, a tissue contacting surface and a tissue machine contacting surface. The tissue contacting surface comprises solid matter at a plurality of heights such that the tissue contacting surface of the non-woven tissue making fabric has an Overall Surface Depth of at least 0.2 mm in regions of solid matter on the tissue contacting surface.

The invention provides systems and methods for generating and displaying computational holographic stereograms having a hologram surface and a spatially distinct image surface. A three-dimensional object or scene is captured or synthesized as a stack of views. The holographic stereogram is computed by obtaining a diffractive fringe vector e and a pixel slice v through the stack of views, and generating the holopixel representation f=ev. The holographic stereogram is displayed using one or more image surfaces that are spatially distinct from the hologram surface. the surfaces can be any two-dimensional structures defined on a three-dimensional space, including, but not limited to planar, cylindrical, spherical, or other surfaces. The holographic stereograms are adjustable through variations in an image surface depth, an image surface resolution, a number of image surfaces, and a scene parallax resolution.

Disclosed are liquid crystal (LC) phase-retarders and linear polarizers and methods and apparatus for making the same. The liquid crystal phase-retarder is realized by a liquid crystal film structure having one or more phase retardation regions formed therein. Each phase retardation region has an optical axis specified by the direction and depth of orientation of liquid crystal molecules along the surface of the liquid crystal film structure. The liquid crystal linear polarizer is realized by a liquid crystal film structure having a chiral phase region within which liquid crystal molecules are cholesterically ordered. One or more nematic phase regions are formed along the surface of the liquid crystal film structure within which liquid crystal molecules are oriented along a direction and to a surface depth sufficient to realize one or more phase retardation regions therein having optical axes along the direction of liquid crystal molecule orientation.

A differential filtering chromatic confocal microscopic system comprises a chromatic dispersion objective for receiving and axially dispersing a broadband light from a light source and projecting dispersed lights onto an object thereby forming an object light reflected therefrom; an optical modulation module for dividing the object light into a first and a second object lights; a pair of optical intensity sensing module, respectively having a spatial filter with a different pinhole diameter or a slit width from each other, for detecting the first and second object lights, thereby obtaining a plurality of first and second optical intensity signals; and a signal processor for respectively processing the plurality of first and second optical intensity signals thereby obtaining a plurality of differential rational values of optical intensity and determining a corresponding object depth associated with each differential rational value according to a relation between signal intensity ratio and object surface depth.

The invention relates to a 3D detection method for rail surface defects, which can realize 3D defect online detection on four surfaces of a rail. The method comprises the following steps: laser line light sources are respectively arranged on the top surface, the bottom surface and the two sides of the rail, and the laser lines emitted by the four laser line light sources form a closed curve; meanwhile, 8 area-array CCD cameras are arranged around the rail so as to synchronously acquire a closed area formed by the laser lines; and transferring the laser line image acquired by the camera to a computer, and judging the change condition of a laser line coordinate by extracting the laser lines to detect the 3D defects on the rail surface. In the invention, the method helps transform depth variable quantity of the rail surface into a 2D gray scale image, and detect the 3D defects on the rail surface by a distribution map of surface depth variation so as to detect a defect area by an image processing algorithm, thus realizing the real-time processing capability on complex 3D data.

Disclosed are liquid crystal phase-retarders and linear polarizers and methods and apparatus for making the same. The liquid crystal phase-retarder is realized by a liquid crystal film structure having one or more phase retardation regions formed therein. Each phase retardation region has an optical axis specified by the direction and depth of orientation of liquid crystal molecules along the surface of the liquid crystal film structure. The liquid crystal linear polarizer is realized by a liquid crystal film structure having a chiral phase region within which liquid crystal molecules are cholesterically ordered (FIG. 3). One or more nematic phase regions are formed along the surface of the liquid crystal film structure within which liquid crystal molecules are oriented along a direction and to a surface depth sufficient to realize one or more phase retardation regions therein having optical axes along the direction of liquid crystal molecules orientation.

Disclosed are liquid crystal (LC) phase-retarders and linear polarizers and methods and apparatus for making the same. The liquid crystal phase-retarder is realized by a liquid crystal film structure having one or more phase retardation regions formed therein. Each phase retardation region has an optical axis specified by the direction and depth of orientation of liquid crystal molecules along the surface of the liquid crystal film structure. The liquid crystal linear polarizer is realized by a liquid crystal film structure having a chiral phase region within which liquid crystal molecules are cholesterically ordered. One or more nematic phase regions are formed along the surface of the liquid crystal film structure within which liquid crystal molecules are oriented along a direction and to a surface depth sufficient to realize one or more phase retardation regions therein having optical axes along the direction of liquid crystal molecule orientation.

The invention relates to a method for simultaneously realizing image acquisition and depth measurement by using a single camera, comprising the following steps: step 1, projecting line-structured light onto the surface of the object to be measured, which forms a light section curve on the surface of the object to be measured, and using a single camera at the same time The camera continuously shoots the surface of the wheeled rotating object at a certain frame rate, and stores the captured original sequence images; the light section curve is included in the surface image; step 2, performs image correction and splicing processing on the original sequence image sequence, and obtains The complete image of the measured object; step 3, using the line-structured light direct optical triangulation method to obtain the depth information of the object surface where the line-structured light is located in each image. The present invention can complete image acquisition under a large field of view, and the depth information measured by the aid of line structured light can be positioned to its corresponding surface position, so as to simultaneously acquire the image information corresponding to the depth information, thereby more comprehensively acquiring Measure the shape of the object.

The invention discloses chemical tempered glass with a combined stress advantage as well as a preparation method and application thereof. When the chemical tempered glass is 0.4-1.5mm in thickness specification, and the planar pressure stress CS_F at an area which is 50 mu m below a surface depth meets: CS_F is greater than or equal to 215.24-230.61 / (1+EXP((T-0.715) / 0.203)). The chemical temperedglass disclosed by the invention has high-level deep layer stress and high drop-resistant strength, and is high in mechanical strength. The chemical tempered glass further has relatively low dielectric constant and dielectric loss. As the chemical tempered glass has the advantages, the application of the chemical tempered glass is effectively expanded. The chemical tempered glass is obtained by adopting a single binary ion exchange processing method, the chemical reinforcing method of the chemical tempered glass can effectively save the usage amount of salt bath, the reinforcing treatment process is simplified, the stability of chemical tempered glass performance is guaranteed, and the cost of production is lowered.

The invention provides a vehicle surface deep scratch repairing process. The scratch repairing process comprises the following steps of: firstly, treating the surface, treating, cleaning and air-drying a surface coating, and coating priming paint and antirust paint; secondly, scraping putty, coating quick-dry automobil putty on a metal surface, leveling and cleaning; thirdly, spraying a middle coating, spraying priming paint twice and grinding flush; fourthly, spraying a surface coating, comprising the procedures of spraying, mild grinding and finishing; and finally, polishing and waxing. The invention discloses a vehicle surface deep scratch repairing process. The repairing process has the advantages of reasonable procedure structure and high quality after repairing and can be used for repairing the defects of local vehicle body damages, board deformation, fractures and the like caused by collision, scratching and other reasons.

The embodiment of the invention provides a living body detection method and device, and the method comprises the steps: extracting noise from a target face image based on a first convolutional neuralnetwork, and determining a first classification probability of the target face image based on a second convolutional neural network according to the noise and the target face image; Based on a third convolutional neural network, extracting an input surface depth feature of the target face image, and determining a second classification probability of the target image according to the input surfacedepth feature; And determining the authenticity of the target face image according to the first classification probability and the second classification probability. According to the embodiment of theinvention, the deception behavior of face recognition by using pictures and videos can be automatically recognized, the speed is high, the accuracy is high, the robustness is high, and the equipmentrequirement is low.

The invention relates to a surface roughness measurement method and a realization device. The method is characterized by using a high-resolution microscopic camera which is equipped with a long objectdistance microscopic lens to shoot the surface image of a measured object when a single point light source irradiates, wherein after n point light sources are successively lightened, the camera can shoot n surface images I1-In, and the n is greater than or equal to 3; using a high-light black ball to calibrate the direction of the light source and acquiring the unit direction vector L1-Ln of allthe light sources and the transformation ratio coefficient f of a world coordinate (x, y, z) and an image coordinate (u, v); calculating the image coordinate value W(u,v) of a surface depth through the unit direction vector L1-Ln of the light source and the two-dimensional image I1-In of the surface of the measured object; acquiring the world coordinate value Z(x, y) of the surface depth of the measured object through the transformation ratio coefficient f; selecting the appropriate sampling length lr, and sampling the Z(x, y) to acquire a contour curve z(x); using a gaussian filter to filterthe contour curve z(x) so as to obtain a gaussian center line w(x), and separating a roughness profile r(x); and calculating the arithmetic average deviation value of the roughness profile r(x) and taking as the measured value of roughness.

The invention provides a depth domain layer speed correcting method suitable for an undulating surface, belonging to the field of the seismic data processing of the physical prospection in the petroleum geochemistry. The method comprises the following steps of: firstly, segmenting an offset distance, grouping input trace gathers according to the offset distances, carrying out the undulating surface prestack depth migration, and generating a common imaging point trace gather; carrying out undulating surface residual speed analysis, computing a high-order residual curvature spectrum, picking up a depth-residual curvature pair according to the local maximum value of the high-order residual curvature spectrum, and obtaining speed model correction quantity; carrying out spatial interpolation and smoothness on the speed model correction quantity, and adding the speed model correction quantity with an initial speed model to obtain an updated undulating surface depth domain layer speed model; and replacing the initial speed model with the updated undulating surface depth domain layer speed model, and carrying out the analysis of undulating surface prestack depth migration and the undulating surface residual speed once again, so that the precision of the speed model can be continuously improved.

A self-locating feature for a pi-joint assembly is provided. The pi-joint assembly includes a substructure, a member coupled to the substructure. The substructure includes one or more land extending above one of a front side and a back side of the substructure. The land includes an outer surface, a depth location control surface and an edge location control surface. The member includes a base, a pair of axially elongated leg extending from the base to define a channel therebetween, and one or more notch located in one of the pair of axially elongated leg. The notch includes a depth contact location control surface and an edge contact location control surface, wherein the depth location control surface of the land of the substructure is correspondingly coupled to the depth contact location control surface of the notch located in one of the axially elongated leg, and the edge location control surface of the land of the substructure is correspondingly coupled to the edge contact location control surface of the notch located in one of the axially elongated leg. A method of assembling a pi-joint assembly of the present invention is also provided.

The invention relates to a method for three-dimensionally rendering scene, a graphic image treatment device, equipment and system; the method comprises the following steps of: calculating the depth parameter related to the distance of the scene to be rendered between the scene and the camera and the scene scale parameter of the scene to be rendered; confirming the zero parallax surface depths of the first camera and the second camera according to the depth parameter related to the distance of the scene to be rendered between the scene and the camera and the scene scale parameter; rendering the scene to be rendered by using the first and the second cameras based on the confirmed zero parallax surface depths. Correspondingly, the graphic image treatment device comprises a scene analyzing module, a parameter confirming module and a three-dimensional rendering module; the graphic image treatment device can be used in mobile terminal, computer system and image obtaining equipment. Through the invention, the three-dimensionally rendered image has better three-dimensional display effect.

The invention provides a 3D size and surface pressure measuring method based on a pressure sensitive paint and a light field camera. The method comprises a picture obtaining step in which a pressure signal light field picture and a depth signal light field picture of a model are obtained; a surface pressure distribution calculating step in which a model surface pressure distribution map of the model is calculated from the pressure signal light field picture; a surface depth distribution calculation step in which a model surface depth distribution map is calculated from the depth signal light field picture; and a 3D pressure distribution generation step in which information of the model surface pressure distribution map is fused with information the model surface depth distribution map to generate a 3D model pressure distribution map. The invention also provides a measuring device for realizing the measuring method. Thus, 3D size and surface pressure distribution fused data of the modelcan be obtained via single-point shooting by the single light field camera, and compared with shooting requirements of other pressure-sensitive paints and 3D reconstruction, the system complexity isgreatly reduced, and the measuring efficiency is improved.

The present invention discloses method and device for determining 3D object surface coordinate and color. The surface of the object to be measured is exposed alternately with laser pulse and light pulse to form laser image and color image modulated by object surface depth. The 3D coordinates of the object laser irradiates are calculated based on optical principle and color information is collected in the corresponding points of the color image of the object. The device for the measurement has scanning head comprising double-visual angle scanning video camera, lighting pulse light source andlaser pulse light source. The double-visual angle CCD camera can realize in-situ complementation to reduce effectively the blind depth error caused by too great surface curvature change.

Guide blades for use with oscillating and reciprocating power tools and provide improved speed and safety, as well as protection against the cutting blades protruding outside of a desired area or beyond a specified surface depth are disclosed. The guide blades include a blade portion with a cutting edge, an adapter corresponding to a particular type oscillating power tool, an attachment base for attaching the guide blade to the oscillating power tool, the attachment base including an offset portion for attachment of the blade portion to the attachment base, and an accessory attachment portion with an opening for securing the adapter to the attachment base, and a rounded guide affixed to the blade portion between the cutting edge and the offset portion, the rounded guide extending from side-to-side and curved away from the offset portion and toward the cutting edge, wherein the rounded guide provides for variable cutting depth.

Tracking of measured depth with intervening depositing of one or more layers provides a way of improving the accuracy of surface reconstruction. For example, knowledge of the desired or expected thickness of each layer, in combination with the scan data is combined to yield higher accuracy than is available from scan data of a single scan alone. One application of such an accurate surface reconstruction is in a feedback arrangement in which the desired thickness of one or more subsequent layers to be deposited after scanning is determined from the estimate of the surface depth and a model of the object that is being fabricated, and by increasing accuracy of the surface depth estimate, the precision of the fabrication of the object may be increased.

The invention provides a binary grid coding template structure light-based object surface depth value measurement method, and aims to improve object surface depth value measurement accuracy by reducing interference of object surface color and surface jump on discrete characteristic decoding. The method comprises the implementation steps of 1) designing a binary grid coding template P; 2) acquiringa gray-scale deformation image I; 3) deleting environmental illumination and discrete characteristic in the gray-scale deformation image I; 4) acquiring a deformation image I3 comprising grid line position information and the discrete characteristic; 5) acquiring a code element sequence of the deformation image I3 and the binary grid coding template P; 6) solving a matching point of a grid line pixel point of the deformation image I3; and 7) calculating a depth information value ZW of a surface of a to-be-detected target object O. The method can be used for scenes such as human-machine interaction, inverse engineering, automatic navigation and biomedicine test.

A method for determining a case depth of a hardened layer in a surface of a metal object includes: (a) placing an eddy current probe at a location adjacent the surface; (b) using the eddy current probe, generating a time-varying eddy current in the object; (c) using the eddy current probe, outputting a measured eddy current and providing a signal representative of the measured eddy current to a computer; (d) using the computer, comparing the time-varying measured eddy current to a correlation of measured eddy currents to known case depths; and (e) determining the case depth at the location of the probe based on the correlation.

The disclosure provides an approach for denoising (also referred to as “filtering”) rendered images. In one embodiment, a denoising application takes as input rendered images and feature buffers that encode image information such as surface positions, surface depths, surface normals, surface albedos, and distances to the camera. For each pixel in a received image, the denoising application performs a first-order regression in a predefined neighborhood of the pixel to find a linear combination of pixel features that fits pixel colors in the predefined neighborhood. In such a first-order regression, the local regression weight of each pixel in the neighborhood may be determined using a metric which computes distances based on color values in patches around pixels being compared. In another embodiment, collaborative filtering may be performed in which filtered output from the first-order regression in each neighborhood is averaged with filtered output from overlapping neighborhoods to obtain a final output.

The invention relates to a nitride passivation method for cavity surfaces of a vacuum-cleaved high-power semiconductor laser, belonging to the technical field of a semiconductor optoelectronic device process. The purpose of the method is to increase an optical catastrophe threshold, reduce the degradation rate of the laser, and prolong the service life of the laser under the condition that the output power of the semiconductor laser is not changed. The method comprises the following steps: first, a semiconductor laser chip is cleaved into bars in a vacuum-cleaving machine, high-purity nitrogen is filled in the process as a protective gas, the whole cleaving process is in the atmosphere of high-purity nitrogen, and fresh cavity surface dangling bonds are decreased after cleavage. After cleavage, the laser chip bars are rapidly put in a vacuum coating machine, nitrogen ions are used for carrying out cavity surface depth passivation to form a GaN passivating layer, and useless impuritiesgenerated by nitride passivation are removed through hydrogen ions. After the semiconductor laser forms the GaN passivating layer, a front cavity surface and a rear cavity surface are respectively subjected to anti-reflection film and high-reflection film plating. The technical scheme can be applied to the manufacturing of various high-power semiconductor lasers.

The invention belongs to the technical field of stainless steel, and in particular, relates to a method for improving surface quality of stainless steel. The method comprises the steps of: (1) dipping by sodium citrate solution; (2) nitriding; (3) cooling after nitriding; (4) radiation; and (5) reinforced radiation. After compound treatment in all steps of the method, the surface of the stainless steel is higher in hardness and excellent in wear resistance; a layer of thick and compact passivation film is formed on the outermost layer, in particular, the surface depth of the stainless steel reaches 120 microns; the microscopic hardness in a surface layer is largely increased; the surface coefficient coefficient is reduced; and the surface wear resistance is prominently improved.

The invention, which relates to the technical field of stability evaluation of a dangerous rock body, discloses a geological dangerous rock body stability evaluation method with linear feature extraction. The method comprises: coarse registration and precise registration are carried out on two-stage point cloud data; with a Kriging interpolation method, dangerous rock body surface models are generated; gray-scale quantification processing is carried out on three-dimensional coordinate point sets of regular grids in the dangerous rock body surface models according to a Z value of each point; with an edge detection operator, feature line extraction is carried out on two dangerous rock body surface depth images; according to a correspondence relationship between three-dimensional coordinate points of the regular grid in the dangerous rock body surface model and pixel points in the dangerous rock body surface depth images, deformation values of corresponding points in the three-dimensional coordinate point sets of the regular grid feature lines in the two dangerous rock body surface models are calculated and thus stability of the dangerous rock body during the monitoring cycle is determined. With the method provided by the invention, linear features of the landslide surface of the dangerous rock body are extracted; and with the obtained three-dimensional deformation value, the stability inside the rock body can be analyzed based on deformation situations of the three directions.

The invention discloses a rod-shaped object surface defect detection system and method based on machine vision. The rod-shaped object surface defect detection system comprises a traction device, a vision acquisition device, a synchronizer and a central control system, wherein the traction device is used for driving a rod-shaped object to move; the vision acquisition device is used for acquiring depth information of a surface of the rod-shaped object; the synchronizer is used for synchronizing the traction device and the vision acquisition device; and the central control system is used for processing and displaying the depth information of the surface of the rod-shaped object, which is acquired by the vision acquisition device. The rod-shaped object surface defect detection system and method can avoid defects of manual detection by adopting a machine vision detection technology, have the advantages of high accuracy, high efficiency, stability, reliability, applicability to online detection and the like, and have very wide application prospect.

Borehole inspection device for inspecting a borehole in a workpiece has a measuring head which includes an endoscope and is insertable into the borehole to be inspected and movable relative to the borehole in different axial positions. Borehole inspection device has an imaging optics with a panoramic view for imaging the inner surface of the borehole, and the imaging optics is in image transmission connection with a digital image recorder. Device has a memory for storing the images recorded in different axial positions of the measuring head, and an evaluation apparatus for evaluating the images stored in the memory. In order to obtain surface depth information about the inner surface of the borehole, the evaluation apparatus is configured for evaluating images recorded at different viewing angles of the imaging optics with regard to the particular surface location, using a 3D reconstruction method.

A projector that projects a visible image as well as a non-visible image. The non-visible image might be used for any purpose, but an example is in order to provide depth information regarding physical item(s) interacting with the projected visible image. The projector includes multiple projecting units (e.g., one for each pixel to be displayed), each including light-emitting elements configured to emit light in the visible spectrum. Some or all of those projecting units might also include an emitting element for emitting light in the non-visible spectrum so as to collectively emit a non-visible image. Optics may be positioned to project the visible image and the non-visible image. A depth sensing module detects depth of surfaces within the scope of the non-visible image using a reflected portion of the non-visible image.