142 results about "Projection line" patented technology

The invention relates to the technical field of computer graphics, in particular to a three-dimensional geological section real-time cutting method and system and a storage medium, and the method comprises the steps: constructing a BVH tree to accelerate the cutting of a three-dimensional geological model, and calculating the projection of intersecting line segments on a cutting surface two-dimensional coordinate system to obtain a projection line segment set; constructing an undirected graph structure based on the projection line segment set; and extracting a closed profile contour based on the undirected graph structure, subdividing a triangular grid, and rendering and displaying. The implementation of the scheme can break through the traditional preprocessing dependence, and improve the profile generation efficiency and the visualization integrity.

The present application discloses a cabinet assembly and a refrigeration device, wherein the cabinet assembly includes a door body, a cabinet and a hinge assembly, wherein the second hinge point is arranged away from the outer edge of the door body compared to the first hinge point, and a first angle and a second angle are respectively formed between the first hinge point and the first reference plane in a first movement direction relative to the cabinet, the second hinge point and the second movement direction relative to the cabinet, and during the process of the door body opening from a closed state to a first opening angle, the difference between the second angle and the first angle at the same actual opening angle of the door body relative to the cabinet gradually increases to offset the increase of the projection line of the line connecting the second hinge point and the outer edge on the first reference plane, and the increase of the projection line of the line connecting the second hinge point and the inner edge on the second reference plane, thereby reducing the problem of squeezing the cabinet and exceeding the side of the cabinet assembly when the door body is opened.

A projection method based on the three-dimensional scanning projection line of the structured light relates to three-dimensional information reconstruction technology field and comprises: switching different projection image groups periodically or randomly in three-dimensional measurements, to collect a plurality of continuous projection image groups (S101); projecting several images of the projection image group onto a surface of an object to be measured (S102); imaging projection images projected onto the surface of the object to be measured to obtain imaged images (S103); and decoding the imaged images and determining a corresponding relation between respective imaging positions and projection positions, to provide three-dimensional information for reconstructing the surface of the object to be measured (S104).

The invention relates to the technical field of plastic particle cutting control, and discloses a high-precision plastic particle cutting equipment control method and system capable of automatically rectifying deviation, and the method comprises the following steps: obtaining a to-be-cut material image, a projection line image and the cutting amount of the current cutting stage; calculating the distance between adjacent projection lines according to the projection line image to obtain spacing data; performing image preprocessing on the to-be-cut material image to obtain an initial sectional area of the to-be-cut material and a corresponding sectional image coordinate; calculating the optimal section coordinate of each to-be-cut material section according to the initial section area and the section image coordinate, and adjusting the initial section area according to the optimal section coordinate to obtain the section area of the to-be-cut material; performing least square fitting on the sectional area of the to-be-cut material and the coordinates of the sectional image to obtain an optimal sectional area; the optimal sectional area is substituted into a preset cutting speed formula to calculate cutting speed data, and the optimal cutting speed is obtained; and the cutting device is controlled to conduct cutting work according to the interval data, the optimal cutting speed and the optimal cutting amount.

The invention belongs to the technical field of oil and gas pipeline safety monitoring and unmanned aerial vehicle image analysis, and discloses a two-stage oil and gas pipeline occupation pressure monitoring method and system based on unmanned aerial vehicle space perception and deep learning fusion, and the method comprises the steps: obtaining image data and space data of a to-be-monitored region, combining the image data and the space data with a DEM, and obtaining a DEM image; realizing projection of geographic coordinates of the pipeline to image pixel coordinates to obtain a plane image of the pipeline; constructing and deploying a lightweight target detection network DRF-YOLOv8n, performing reasoning on a plane image of the pipeline based on the lightweight target detection network DRF-YOLOv8n, outputting a candidate bounding box, and performing screening and key frame judgment; a Promp-guide SAM pixel level segmentation module is used to realize pixel level segmentation of the key frame, and a candidate pixel mask is generated; and judging whether occupation occurs or not through the intersection of the pipeline projection line and the candidate pixel mask, and outputting alarm information with geographic coordinates.

A tower inclination monitoring method and device based on a camera Internet network, belonging to the technical field of wind turbine tower monitoring, the method measures and records the actual height of the target tower; according to the actual height and the surrounding environment, a camera is placed at the center of the adjacent tower top; the data of the target tower at this time is used as initialization data, and the target tower is photographed in real time; the real-time image and the projection line laser image are processed respectively; the inclination angle and settlement data are calculated according to the edge line of the target tower and the laser center straight line; the inclination angle of the target tower is compared and calculated with the inclination angle of the reference wind turbine, and if the difference between the two exceeds the preset safety threshold, an alarm is issued; the settlement data of the target tower is compared with the initialization data, and if a height settlement occurs, an alarm is issued. The present invention can realize all-round and multi-angle monitoring of wind turbine towers, automatically identify and judge the degree of inclination of wind turbine towers, and reduce manual intervention.

The present application discloses a cabinet assembly and a refrigeration device, wherein the cabinet assembly includes a door body, a cabinet and a hinge assembly. During the process of the door body opening from a first opening angle to a second opening angle relative to the cabinet, a first vertical distance from a reference point of the door body to an outer edge gradually decreases, and a second vertical distance to an inner edge gradually increases within a predetermined angle range. A third angle between a first vertical line and a first reference plane gradually decreases within a range of 0 to 90 degrees, and a fourth angle between a second vertical line and the first reference plane gradually increases within a range of 0 to 90 degrees, and exceeds 90 degrees within a predetermined angle range, so as to offset the increase of projection lines of the first vertical line and the second vertical line on the first reference plane and the second reference plane, respectively, thereby reducing the problem of squeezing the cabinet and exceeding the side of the cabinet assembly when the door body is opened.

The invention discloses a position determination method and device. A specific embodiment of the method comprises the following steps: a projection point cloud generation device scans a point cloud generated by a target end face of a target object to obtain a projection line segment; comparing the length of the projection line segment with the length of the target end face, and determining whether the point cloud generation device is shielded in the process of scanning the target end face; and in response to non-shielding, according to the target point of the projection line segment, determining the relative position of the object access device where the point cloud generation device is located relative to the target object. Whether the point cloud generation device is shielded in the process of scanning the target end face can be determined, and the relative position of the object access device relative to the target object is determined based on the projection line segment when it is clear that the point cloud generation device is not shielded, so that the determination efficiency and accuracy of the relative position are improved.

The invention relates to a multi-view display system, visualization system and method of a virtual pipeline. The visualization system comprises an acquisition module, a creation module and a generation module. The acquisition module is used for acquiring topographic image data and / or remote sensing image data of a to-be-observed area; the creating module is used for generating a three-dimensional GIS environment of the to-be-observed area based on the topographic image data and / or the remote sensing image data; the generation module is used for generating a pipeline model in the three-dimensional GIS environment in response to the input of the pipeline data; when the virtual pipeline is generated, the long-distance pipeline data in the GIS environment comprises projection line data; the projection line data converts the three-dimensional topographic data of the earth surface into two-dimensional projection on a plane, and the path and position of the pipeline can be clearly seen on a map, so that the pipeline data can be displayed in a more intuitive manner. Through projection line data, a user can clearly see the path and the position of the pipeline on a map, and can better understand the relationship between the pipeline and the surrounding environment in combination with other geographic information.

This application discloses an image projection method, apparatus, projection system, and storage medium. The method includes: acquiring a first projected image obtained by a first projector projecting a projection line diagram onto a projection surface according to a preset correction dot matrix, and acquiring a second projected image obtained by a second projector projecting a projection line diagram onto a projection surface according to a preset correction dot matrix; calculating the overlap between the first and second projected images as an initial overlap; adjusting the positions of correction points in the preset correction dot matrix, and performing the steps of acquiring the second projected image obtained by the second projector projecting a projection line diagram onto a projection surface according to the preset correction dot matrix, and calculating the overlap between the first and second projected images, until the obtained overlap is the highest and greater than or equal to the initial overlap; acquiring the target correction dot matrix corresponding to the highest overlap, so that the second projector projects according to the target correction dot matrix, thereby improving the accuracy of the superimposed projection.

The embodiment of the present disclosure relates to a kind of steel anchor beam space cable conduit assembly positioning method.The method comprises: arranging platform on hardened ground, and arranging first longitudinal and transverse reference line on the platform;According to the first longitudinal and transverse reference line on the platform, tooling structure is arranged on the platform, and the tooling structure is used for the assembly positioning of cable conduit;Second longitudinal and transverse reference line is arranged on wallboard, and steel bracket is positioned according to the first longitudinal and transverse reference line on the platform and the second longitudinal and transverse reference line on the wallboard;Cable conduit is initially arranged on wallboard by tooling structure;According to the preset horizontal bridge direction angle, the theoretical projection line of cable conduit on platform is determined, and baseline is hung on the intersection of cable conduit, the position of cable conduit in horizontal direction is adjusted by tooling structure, to make baseline intersection on theoretical projection line;According to preset angle, the position of cable conduit in vertical direction is adjusted.The positioning of the embodiment of the present disclosure to cable conduit is accurate and efficient.

The invention relates to a method for 3D reconstruction of a scene (2). The method comprises the step of providing a first camera (3) with a known position and orientation. The method further comprises a step of determining a first set of projection lines corresponding to the pixels (11) of said first camera (3), said projection lines being defined by the location and orientation of said camera (3) and the corresponding pixels (11). The method further comprises the step of projecting a light beam (13) onto the scene (2) by means of a light source (12) so as to limit a point (1) on said scene (2). The method further comprises the step of determining pixels corresponding to the image of the point (1) on the first camera (3) so as to define a corresponding first projection line (9) from the first set of projection lines. The method further comprises a step of determining a second projection line (10) from the second set of projection lines, the second projection line (10) corresponding to the instantaneous position and orientation of the light beam (13) or to the image of the point (1) on the second camera (4). The method further comprises a step of calculating a 3D position (17) of the point (1) on the scene (2) on the basis of the first and second projection lines (9, 10), wherein the 3D position (17) is defined in an area (18) in which the first projection line (9) and the second projection line (10) are closest to each other.

The invention discloses an intelligent safety management method and device for construction personnel in a TBM (Tunnel Boring Machine), and the method comprises the steps: selecting projection lines of each standing platform along the section of the length direction of a tunnel from an imported TBM three-dimensional model, obtaining the real-time coordinate position of each projection line in a positioning space, obtaining the information of a movable label positioning point on a safety helmet of the construction personnel, and carrying out the positioning of the movable label positioning point; obtaining a movable label coordinate of the movable label positioning point in the positioning space; calculating the spatial position relationship between the real-time coordinate position of each projection line and the coordinates of the activity label, and selecting the standing platform corresponding to the projection line of which the spatial position relationship meets the condition as the current activity platform of the constructor; and the relative position change trend between the movable label positioning point and the current movable platform of the constructor is monitored in real time, and when the relative position change trend does not meet the safety construction condition, it is judged that the constructor conducts uncapping construction. Whether a constructor carries out uncapping construction or not is monitored, and construction safety management of the constructor in a hole is guaranteed.

The application discloses a saw blade detection system based on multi-source data fusion, and particularly relates to the technical field of saw blade detection; the saw blade detection system is characterized in that: side surface image data of a saw blade is collected, tooth back surface projection line features and edge geometry features are extracted, initial visual feature data of the saw blade is established; side surface image data is continuously collected in actual processing, side edge projection line features and edge position changes are compared and analyzed, visual wear data is determined; main shaft current data is synchronously collected and current change trends and variability are analyzed, current wear data is determined; normal wear and tooth loss abnormal trends of the saw blade are analyzed based on the visual wear data and the current wear data, visual degradation features and current abnormal features are obtained; visual and current fusion feature data is calculated in combination with product processing unqualified rate, and a saw blade scrapping trigger threshold is established; finally, fusion feature data and the scrapping threshold are compared in real time, so that the saw blade scrapping or replacement time is determined; and the application improves the precision and reliability of saw blade state monitoring.

The application discloses a grinding processing method for inner concave outer circle and end face, which comprises the following steps: grinding the inner concave outer circle and end face of a part to be processed by using a grinding wheel; the grinding wheel comprises a grinding wheel body and a connecting rod; one end of the connecting rod is connected to a grinding wheel frame, and the other end is connected to one end of the grinding wheel body; a grinding surface is arranged on the side surface of the grinding wheel body to grind the part to be processed; the central axis of the connecting rod and the central axis of the part to be processed have an inclination angle alpha; on the plane passing through the central axis of the part to be processed, the end face projection line is used as a reference line, the highest height of the inner concave outer circle projection line relative to the reference line is H, the diameter of the grinding wheel body is D, the diameter of the connecting rod is d, the length of the connecting rod is l, l<=3d is satisfied, and beta=90-alpha. The application has the advantages of high machining precision and high efficiency.

The present invention provides a centering measurement method for shipbuilding, which relates to the field of centering measurement. The centering measurement method comprises the following steps: step 1, tying a chalk line above a reference plane, hanging a simulation block at the lower end of the chalk line, allowing the chalk line to naturally hang and remain stationary; step 2, removing the simulation block and hanging a plumb bob; step 3, placing a light source structure on the reference plane, the light source structure being located on one side of the plumb bob, and a segmented measurement surface being located outside the reference plane and corresponding to the other side of the plumb bob; step 4, turning on the light source structure to emit irradiation light toward the other side of the plumb bob, the irradiation light being parallel light, and the irradiation direction of the irradiation light forming an inclined angle with the plane where the reference plane is located; step 5, under the irradiation of the light source, a chalk line projection line is formed on the segmented measurement surface, adjusting the positions of the chalk line and the plumb bob so that the chalk line projection line coincides with the center line of the segmented structure, and observing the deviation value between the plumb bob tip projection and the center line of the reference plane to determine the centering accuracy of the segmented structure.

The invention discloses a tubular part assembling method, an assembling assembly and an assembling system.When a plurality of clamp units of the assembling assembly are controlled to clamp a tubular part, the angle of the tubular part is rotated so as to determine whether a projection line of a preset part of the tubular part coincides with a projection reference line on a base of the assembling assembly or not; and if the projection line of the preset part coincides with the projection reference line, it is determined that the tubular part meets the preset angle needed by assembly, and the tubular part is fixed to the opponent part. In the actual assembly process, the tubular part is fixed through the clamp unit, the tubular part is rotated to enable the projection line of the preset part to coincide with the projection reference line, that is, the tubular part is located at the preset angle needed by assembly, assembly and fixation can be conducted, the axial rotation angle of the tubular part in the assembly process can be rapidly and accurately controlled in the mode, and the assembly efficiency is improved. Therefore, the problem of axial rotation during assembly is avoided, the assembly precision of the tubular part is effectively improved, and the assembly efficiency of the tubular part is also improved.

A method for determining a slipstream area behind a vehicle ahead is described, wherein a pattern is projected forward in the direction of travel by means of at least one headlight of the vehicle, wherein the pattern is generated from a plurality of headlight pixels, wherein projection lines are determined for the headlight pixels, wherein an environment located in front of the vehicle is measured three-dimensionally and three-dimensional measurement data is generated, wherein features of the pattern located in front of the vehicle, generated by reflection from the headlight pixels, are recorded by means of at least one camera pointing forward in the direction of travel and transferred as image points into a camera plane. From the distance of the image points from the epipolar pole of the camera plane, a distance of the reflected features of the pattern to the headlight is determined.Furthermore, a correspondence is established between reflected features of the captured pattern and the three-dimensional measurement data on the respective projection lines of the headlight pixels, whereby deviations between the distances of the features of the pattern to the headlight and distances to the headlight determined from corresponding three-dimensional measurement data are determined on the respective projection line, and the wind shadow area is determined on the basis of the deviations.

The invention relates to an angle calculation method and a panoramic head-up display system, the panoramic head-up display system comprises windshield glass, a display screen and a polarization unit, the plane where the polarization unit is located is parallel to the plane where the display screen is located, and the method comprises the following steps: according to three non-collinear points on the surface of the display screen, calculating the angle of the display screen; calculating a normal vector of a display plane of the display screen; calculating the direction vector of P polarized light according to the normal vector of the reflection plane and the direction vector of the incident light; drawing a vertical line vertical to the incident light in the reflection plane, taking the projection of the vertical line in the display screen as a projection line, and calculating the direction vector of the projection line; acquiring two points longitudinally arranged along a display area of the display screen, and calculating a reference vector; and calculating the angle theta of the polarization unit according to the direction vector and the reference vector of the projection line. According to the technical scheme, the problem that the utilization rate of P polarized light is not high due to the fact that a polarization unit is directly rotated by 90 degrees and then attached to the surface of a display screen in a traditional scheme can be solved.

This application relates to the field of data analysis technology, and in particular to a method, apparatus, computer device, storage medium, and computer program product for extracting profile lines from oblique photogrammetry data. The method includes: dividing the oblique photogrammetry data into multiple block files according to a geographic grid, with each block file containing a root node corresponding to a specific block file, and hierarchically storing node files corresponding to child nodes derived from the root node; identifying target block files and target node files that intersect with the projection line data; reading specific geometric data from the target node files, with the geometric data associated with profile line extraction; using a preset intersection algorithm to traverse the geometric data in all target node files to obtain profile points, and connecting the profile points to generate target profile lines. This method can improve the efficiency of profile line extraction in large-scale oblique photogrammetry data and reduce the computational load of profile line extraction.

The application discloses an initialization method of a conic surface under a projection linearization track surface, and belongs to the technical field of calculation, reckoning or counting. The method first obtains a preliminary estimation of a target track through three groups of observation data; determines a conic surface containing an initial track surface according to initial track information and geometric knowledge; estimates the missing height information in combination with the conic surface, and obtains more position information of the target in combination with the existing angle information; projects the position information of the target into a two-dimensional section, re-estimates the track parameters by using a least square algorithm, and more accurate track parameters can be obtained; then the iteration process is repeated by using the newly obtained track information until a certain initial orbit determination accuracy requirement is met. The algorithm firstly fits the height information of the target by using a conic surface coordinate system, and realizes linear fitting of the position vector by using a track surface projection method, so that the calculation amount is small and the accuracy is high.

This invention relates to the field of shipbuilding technology and discloses a method for lofting and unfolding a sloping cylindrical structure, comprising the following steps: S1, creating a side view and a normal section view; S2, obtaining the minor axis projection line HV in the side view; S3, obtaining the minor axis section projection line H1V1 and the major axis section projection line P1W1 in the normal section view; S4, obtaining the major axis projection line PW in the side view; S5, drawing perpendicular lines from points P and W to the center line of the cylinder to obtain line segment QT; S6, dividing the normal section view into equal parts, projecting each division point onto line segment QT to obtain equal division projection points, and unfolding the sloping contour to obtain unfolding points; S8, repeating S7, smoothly connecting each unfolding point; S9, obtaining the generatrix unfolding points, connecting two generatrix unfolding points to complete the lofting and unfolding diagram of the sloping cylindrical structure. Using the minor axis projection line and the major axis projection line as a reference, the lofting and unfolding of the cylinder is achieved, realizing accurate lofting and unfolding of any sloping cylindrical structure, facilitating cylinder installation.

The present invention relates to the field of aviation technology, and discloses a ground measurement method, device, and medium for the deflection angle of an aircraft rudder. The method comprises establishing a coordinate system; selecting two points A and B as marks on the lower surface of the rudder, and recording the distance between the two points A and B; recording the projection points A' and B' of the two points A and B on the horizontal plane, recording the distance between A' and B', and calculating the angle between the projection line and the second vertical plane, and calculating the calculated angle, recording the calculated angle before the rudder deflection and the calculated angle after the deflection, and calculating the deflection angle. The device comprises a coordinate system establishment mechanism, a measuring mechanism, a storage unit, and a calculation unit. By establishing a three-dimensional coordinate system, the rudder deflection angle is calculated in combination with the change in the projection angle of the measuring point, which is applicable to ground conditions and improves the convenience and versatility of measurement.

The invention provides a method for designing a runner body jig frame, which comprises the following steps of: functionally dividing a runner body into a lower half part fused with a main ship body and an independent closed upper half cylinder part in the head-tail direction and the up-down direction on the basis of curvature change and space closure of the runner body; the lower half part and the corresponding part of the main hull are used as a whole, and a first jig frame is manufactured in a positive manufacturing mode; for the independent upper half cylinder part, a second jig frame is manufactured in a single beveling reverse manufacturing mode with the direction of the longitudinal center line of the flow channel as a rotation and projection base plane, so that the projection line of the tail closed area of the upper half cylinder part is perpendicular to the base plane; and after the construction of the lower half part and the upper half cylinder part is completed respectively, the upper half cylinder part is removed from the second jig frame and is hoisted to the lower half part on the first jig frame to be accurately folded, and welding is completed. According to the technical scheme, the shape maintaining problem of a complex curved surface, the accurate positioning problem of a flow channel body and the safety construction problem in a narrow closed space can be solved at the same time.

The invention discloses an initialized orbit determination method for projecting a linearized orbital plane under a conical surface, and belongs to the technical field of calculation, reckoning or counting. The method comprises the steps of firstly obtaining preliminary estimation of a target track through three groups of observation data; determining a conical surface containing an initial orbit surface according to the initial orbit information and geometric knowledge; the lacked height information is estimated in combination with the conical surface, and more position information of the target is obtained in combination with the existing angle information; the position information of the target is projected into the two-dimensional cross section, and the orbit parameters are re-estimated by using the least square algorithm, so that more accurate orbit parameters can be obtained; and repeating the iteration process by using the newly obtained orbit information until a certain initial orbit determination precision requirement is met. According to the algorithm, the height information of the target is fitted by using the conical surface coordinate system for the first time, linear fitting of the position vector is realized by using the orbital plane projection method, the calculated amount is small, and the accuracy is high.

Systems and methods are described relating to pose and shape estimation of objects. In some examples, a camera generates images depicting an object from different viewpoints. Within the images, a system identifies corners of the object, and the system uses these corners to generate lines that are projected from different viewpoints through the corners. Points may be identified by intersecting lines such that the points may be used to generate estimations of the object. The estimation with the highest score may be used to place the object in a location different from where the object was located.

The present application discloses a method and apparatus for determining a position. A specific embodiment of the method includes: projecting a point cloud generating device to scan the target end face of a target object to generate a point cloud to obtain a projection line segment; comparing the length of the projection line segment with the length of the target end face to determine whether the point cloud generating device is blocked during the scanning of the target end face; in response to not being blocked, determining the relative position of the item access device where the point cloud generating device is located relative to the target object based on the target point of the projection line segment. The present application can determine whether the point cloud generating device is blocked during the scanning of the target end face, and when it is clear that it is not blocked, determine the relative position of the item access device relative to the target object based on the projection line segment, thereby improving the efficiency and accuracy of determining the relative position.

At least one embodiment relates to signaling at least one texture patch representing a texture value of at least one in-between 3D sample, a texture patch being a set of 2D samples representing texture values of orthogonally projected 3D samples of a point cloud along projection lines onto a projection plane, and said at least one in-between 3D sample being a 3D sample of the point cloud having a depth value greater than a nearer 3D sample of the point cloud and lower than a farther 3D sample of the point cloud, said at least one in-between 3D sample and said nearer and farther 3D samples being projected along the same projection line.

The invention discloses an automatic projection optimization method and device for a trimming line in an intelligent design process and a medium, and belongs to the technical field of industrial manufacturing, the method comprises the steps that digital model data and trimming line data of a part are acquired, the digital model data comprise a product surface, a process supplement surface and a material pressing surface of the part, the process supplementary surface and the material pressing surface form a process molded surface, the trimming line data comprises a suspended trimming line and a trimming direction line, and one end of the suspended trimming line is connected with the outer contour line of the part and suspended above the process molded surface; generating a projection line on the process molded surface according to the trimming direction line and the suspended trimming line; and discretizing the projection line to obtain a plurality of discrete points, optimizing the discrete points according to the distance between the adjacent discrete points, and forming a target projection line according to the optimized discrete points. The invention aims to reduce the working procedures of the part process design flow, save time resources and human resources and improve the design production efficiency of parts.

1. Name of the product design: Plastic finger cots for protecting injured or diseased fingers. 2. Purpose of the product: Used for finger wear to protect injured or diseased fingers. 3. Key points of appearance design: The key point of design is the shape of the product. 4. The picture or photograph that best illustrates the key points of the design: Design 1 stereogram. 5. Designate Design 1 as the base design. 6. The left view of Design 1, the left view of Design 2, the left view of Design 3 and the left view of Design 4 are symmetrical with the right view of the corresponding design, so the left view of Design 1, the left view of Design 2, the left view of Design 3 and the left view of Design 4 are omitted; the top view of Design 1, the top view of Design 2, the top view of Design 3 and the top view of Design 4 are the same as the right view of the corresponding design after rotating 90 degrees counterclockwise, so the top view of Design 1, the top view of Design 2, the top view of Design 3 and the top view of Design 4 are omitted. The bottom view of Design 1, the bottom view of Design 2, the bottom view of Design 3 and the bottom view of Design 4 are the same as the right view of the corresponding design after rotating 90 degrees clockwise, so the bottom view of Design 1, the bottom view of Design 2, the bottom view of Design 3 and the bottom view of Design 4 are omitted. 7. The views of Design 1 and Design 3 are designs with holes, while the views of Design 2 and Design 4 are designs without holes. 8. The horizontal solid lines on the annular circles in the Design 1 and Design 2 views are projection lines indicating the opening gaps of the annular soft material, and the annular soft material can be separated when worn on the fingers.