210 results about "Projection direction" patented technology

The invention provides a vehicle-mounted radar target course angle filtering tracking method and system. The method comprises the steps that S1, the radial speed of clustered point cloud is converted into the absolute radial speed relative to the ground; s2, when a new track is created, an independent course angle extended Kalman filtering tracking module is synchronously initialized; s3, setting a projection direction based on a course angle estimated value output by the module, and completing data association between the point cloud and the track and track state updating through projection; and S4, extracting a position variable quantity based on the updated track state, forming an observed quantity by combining the absolute radial speed of the associated point cloud, inputting the observed quantity to a course angle module for extended Kalman filtering updating, outputting an updated course angle estimated value, and feeding back the updated course angle estimated value to the step S3 of the next frame. According to the invention, by constructing a cooperative closed loop of course angle estimation and data association, the stability of course angle estimation and the overall tracking robustness are significantly improved.

The invention discloses a ship spherical global image splicing method and system based on image processing, and the method comprises the following steps: obtaining multi-camera images which are distributed at the top, the bottom and the annular direction, and executing camera calibration and distortion correction; performing hemispherical projection and cylindrical projection by using a hybrid projection link; feature point extraction and matching are carried out, and an initial registration relation between adjacent view fields is established; executing APAP gridding local registration of projection perception, and generating local homography by applying an anisotropic weight kernel consistent with the region projection direction to obtain a partition alignment result set; carrying out weighted fusion and stitching suppression on the overlapped region to generate a panoramic spliced image; and converting the panoramic spliced image into an interactive three-dimensional panoramic view. According to the method, mixed projection and projection perception APAP algorithms are fused, ship spherical surface global high-precision splicing and three-dimensional immersion display are achieved, and the method has the advantages of being small in distortion, high in precision and high in visibility.

The invention discloses a colon adenoma identification method and device based on Mueller matrix polarization measurement and regularization, a storage medium and electronic equipment. The method comprises the following steps: acquiring a polarization image corresponding to a fresh medical sample containing colon adenoma and normal tissue through a light polarization system, and preprocessing the polarization image; fourier analysis is carried out on a detection signal in the light polarization system to obtain a Mueller matrix, and a Lu-Chipman polarization decomposition algorithm is used for carrying out polarization decomposition on the Mueller matrix to obtain three polarization decomposition parameters; obtaining polarization data of a plurality of channels based on the Mueller matrix, and constructing a sample set based on the polarization data; constructing a target function based on the projection function and the sample set, solving the target function to obtain an analytic solution of the optimal projection direction, and calculating a characteristic value based on the analytic solution of the optimal projection direction; and classifying the polarization images corresponding to the fresh medical samples of the colon adenoma and the normal tissue based on the feature values to obtain a classification result. The lesion recognition rate can be improved.

This utility model provides a fully automatic multi-style handle cutting device, including a frame, a worktable, a first baffle, a second baffle, a cutting component, a feeding cylinder, and a discharging cylinder. The worktable and cutting component are mounted on the frame. The first and second baffles are arranged parallel to each other on the worktable, forming a first feeding channel between them. The cutting component is located at one end of the first feeding channel, and the discharging cylinder and feeding cylinder are located at the other end of the first feeding channel. The feeding cylinder and discharging cylinder are mounted on the worktable. The central axis of the feeding cylinder is parallel to the center line of the first feeding channel, and the central axis of the discharging cylinder is perpendicular to the central axis of the feeding cylinder in the orthographic projection direction. Compared with other handle cutting methods, this device has high working efficiency, can meet the needs of large-scale production, and significantly improves operational safety. It also improves processing accuracy, enhances the stability of the handle's forward movement, and can meet various handle cutting requirements.

A sheet feeding apparatus includes a stacking portion, a rotary feeding member configured to feed the sheet in a sheet feeding direction, a first separation portion including a separation surface, the detachable unit including a second separation portion. A direction that intersects both the sheet feeding direction and a rotation-axis direction of the rotary feeding member, and that extends from the separation surface toward the rotary feeding member is defined as a projection direction. The second separation portion is positioned downstream of the separation surface in the projection direction in a state where the detachable unit is attached to the first separation portion. Another portion of the detachable unit other than the second separation portion is positioned upstream of the separation surface in the projection direction in a state where the detachable unit is attached to the first separation portion.

The invention relates to the technical field of data processing, in particular to a handwritten font recognition and storage method for cold data archiving management. The method comprises the following steps: dividing a single font image into an intrinsic structure main body area and a style induction offset area based on the number of effective pixel points in each projection direction; determining a style influence degree according to the main body area and the offset area; clustering the single font images according to the style influence degree to form a cluster; according to the number of the single-font images in the clustering cluster and the style influence degree numerical range, the aggregation degree of the clustering cluster is determined; determining font structure ambiguity according to aggregation degree difference characteristics among the clusters; determining the overall font ambiguity by combining the font structure ambiguity; inputting the text image and the overall font ambiguity into a pre-training style correction model, and outputting a corrected text image; according to the method, the OCR algorithm is adopted to recognize and correct the handwritten fonts in the text image and store the handwritten fonts, so that the false recognition rate of handwritten font recognition is effectively reduced.

The application discloses a particle screenshot method and related equipment, the method comprises the following steps: acquiring a particle image to be processed, and cutting a field of view region from the particle image based on a preset frame selection range; performing integral projection on the field of view region to obtain a one-dimensional sequence group; performing weighted standardization on the initial one-dimensional sequence based on the field of view size of the field of view region in the projection direction to obtain a weighted one-dimensional sequence; performing smoothing processing on the weighted one-dimensional sequence to obtain a smoothed one-dimensional sequence; performing local peak marking based on the smoothed one-dimensional sequence to obtain a local peak position; converting the local peak positions corresponding to two projection directions of the horizontal direction and the vertical direction to obtain a particle position; and cutting a particle screenshot of a target particle from the field of view region based on the particle position. By introducing the weighted standardization link based on the field of view size, and combining the bidirectional integral projection, sequence smoothing and local peak detection, the particle positioning and screenshot can be efficiently and accurately realized. The application can be widely applied in the field of image processing technology.

This application provides a method, apparatus, device, medium, and program product for determining a vehicle cleaning path. The method maps the 3D point cloud data of the vehicle to be cleaned to a 2D space according to the Z-axis and X-axis projection directions to obtain an unobstructed area; it then segments the unobstructed area to obtain a list of cells and a scan line corresponding to each cell; using a path connection algorithm, it generates candidate cleaning paths in the 2D space based on the cell list and the scan line corresponding to each cell; finally, it maps the candidate cleaning paths to a 3D space using bivariate spline interpolation to obtain the target cleaning path. This application avoids the redundant path problem of traditional segmentation methods by mapping the vehicle's 3D point cloud data to a 2D space and then performing region decomposition and path planning; finally, it maps the paths from the 2D space back to the 3D space using bivariate spline interpolation, ensuring the continuity and coverage integrity of the cleaning path.

The invention provides a focusing method, electronic equipment and a computer readable storage medium. The focusing method comprises the following steps: determining an orientation of a target shooting object in a whole visual field range; controlling the driving assembly to drive the ranging light source to deflect so that the projection direction of the ranging light source points to the target shooting object; controlling the ranging light source to emit first light to irradiate the target shooting object, and controlling the ranging sensor to receive second light reflected by the target shooting object; and determining a first object distance according to the first light and the second light, and controlling the optical lens to focus according to the first object distance. The intensity of light output by the ranging light source can be reduced to reduce power consumption, and the focusing precision of the camera module can be improved.

The utility model discloses amusement equipment with a rotary projection table. The amusement equipment comprises the projection table and an illuminator. The outer table top of the projection table can rotate around the inner table top; the light emitter is located in the center of the inner table top, each light projection face of the light emitter is used for projecting the graphic cards on the outer table top to the corresponding screen, and therefore the static graphic cards on the outer table top are projected into dynamic pictures, and background pictures formed by projection of transparent objects on the inner table top are added. And a richer visual effect is presented on the screen. According to the rotary projection table amusement equipment, multiple projection directions can be provided and projected to multiple screens, more players can play at the same time, projection pictures can be independently designed, children can experience optical charm, and teaching through lively activities is achieved.

A projection image adjustment apparatus includes a base attached to a projection apparatus to project a light in a projection direction; a mover to move the base in a movement direction; and a rotator including a mount to mount the base attached to the projection apparatus; and an imaginary rotation axis perpendicular to a plane including the movement direction and the projection direction. The mount is rotatable about the imaginary rotation axis. The imaginary rotation axis passes through a region of the projection apparatus mounted on the mount via the base.

The invention discloses a particle screenshot method and related equipment, and the method comprises the steps: obtaining a to-be-processed particle image, intercepting a visual field region from the particle image based on a preset frame selection range, carrying out the integral projection of the visual field region, and obtaining a one-dimensional sequence group; performing weighted standardization on the initial one-dimensional sequence based on the view size of the view area in the projection direction to obtain a weighted one-dimensional sequence; smoothing the weighted one-dimensional sequence to obtain a smooth one-dimensional sequence; performing local peak marking based on the smooth one-dimensional sequence to obtain a local peak position; according to the local peak positions corresponding to the transverse and longitudinal projection directions, particle positions are obtained through conversion; and capturing a particle screenshot of the target particle from the view area based on the particle position. The particle positioning and screenshot can be efficiently and accurately realized by introducing a weighting standardization link based on the view size and combining the bidirectional integral projection, the sequence smoothing and the local peak detection. The method can be widely applied to the technical field of image processing.

To adjust the position of a lintel in the depth direction.SOLUTION: An opening / closing device, including a storage section 30, an opening / closing body 10 drawn out from the storage section 30, and a lintel 40 through which the opening / closing body 10 is inserted on the closing direction side of the storage section 30, further includes a lintel adjusting member 50 which is connected at one end side to the lintel 40 and at the other end side to the storage section 30 to adjust the position of the lintel 40 in the depth direction.SELECTED DRAWING: Figure 6

A sealing arrangement structure configured to position a ring seal (1) between a first element (10A) and a second element, comprising the first element (10A) and the ring seal (1), wherein the seal (1) comprises an annular section main body (4) extending in an axial direction of the seal (1) and a projecting section (5) projecting from the annular section main body (4) in an outward direction or inward direction, wherein the first element (10A) is provided with a recessed section (25) configured to accommodate the projecting section (5) and formed in a shape corresponding to the projecting section (5), wherein the projecting section (5) is designed such that a circumferential dimension (L5) of an upper section (5A) thereof in a projection direction is larger than a circumferential dimension (L6) between base parts (P2) thereof, wherein a circumferential dimension (L3) of the excluded section (25) on a rear side in the projection direction is larger than a circumferential dimension (L4) of the excluded section (25) on a front side in the projection direction, and the circumferential dimension (L4) of the excluded section (25) on a front face in the projection direction is larger than the circumferential dimension (L5) of the upper section (5A) of the projecting section (5) in the projection direction.

The invention relates to a projection image adjusting device, an image projection device and an image projection system. The purpose of the present invention is to provide a projection image adjustment device for easily adjusting a projection image projected on a projection surface. A projection image adjusting device according to the present invention comprises: a base unit to which a projection device is mounted; and a moving unit that moves the position of the base unit in a predetermined moving direction. The projection image adjustment device further includes a rotation mechanism that rotates the projection device about a rotation axis perpendicular to a plane including the movement direction and a projection direction of the projection device. The rotating shaft is located in a region passing through a projection device mounted on the base portion.

The application discloses a kind of artificial hole visual guidance design method and visual guidance device, establish the single light source optical projection parameter model of artificial hole perpendicularity and depth visualization guidance, the eccentricity attribute index is used, trajectory center deviation degree is carried out point light source projection trajectory shape simulation analysis;Determine the number of point light source that the hole making tool needs to be arranged;According to workpiece processing size, tool length determines the distance of point light source to the center of processing device for guiding perpendicularity and guiding depth;According to point light source projection trajectory shape simulation analysis, obtain the range of the angle between the light beam projection direction of the point light source for guiding perpendicularity, the point light source for guiding depth and the straight line where the point light source and the center of hole making tool are located.The hole making perpendicularity is fed back by the visual information feedback such as projection pattern shape change, center deviation degree, the hole making feed depth is fed back by the real-time change of trajectory perimeter, effectively improve the hole making quality and stability.

This application relates to the field of green screen lighting technology, specifically disclosing a lighting structure for assisting in green screen background replacement, comprising: a housing, with a fill light installed inside the bottom side of the housing, and an adjustment component on the top of the housing; the adjustment component includes an electric telescopic rod, with a mounting bracket fixedly connected to the telescopic end of the electric telescopic rod, a servo motor installed inside the mounting bracket, a suspension bracket on the housing, and a rotating shaft fixedly connected to the inner side of the housing; this application achieves precise adjustment of the horizontal angle of the fill light by driving the suspension bracket and the housing to rotate via the servo motor; simultaneously, with the cooperation of a self-locking motor, gear one, gear two, and the rotating shaft, the housing is deflected within the suspension bracket, thereby achieving precise control of the fill light deflection angle, enabling comprehensive and fine adjustment of the fill light from three dimensions: height, horizontal angle, and deflection angle, meeting the diverse needs for light projection direction and coverage in different scenarios.

For motion-compensated reconstruction in an imaging process, projection images (7) generated by the imaging process are obtained, representing an object from a multitude of different projection directions. Depending on the projection images (7), three-dimensional first image data (8) are reconstructed. Consistency data (9), which quantifies data consistency for each pair of projection images (7), are generated. Depending on the consistency data (9) and the three-dimensional image data (8), input data (10) are generated. Motion data (12), which characterizes object movement and / or motion artifacts in the first image data (8), are generated by applying a trained machine learning model (MLM) (11) to the input data (10). Depending on the projection images (7) and the motion data (12), three-dimensional, at least partially motion-compensated second image data are reconstructed.

The utility model discloses a kind of suspension type multidimensional adjustable projectors, including projector and inverted recess type frame, the middle part of the outer surface of the front end of projector is provided with lens, the middle part of the outer surface of inverted recess type frame upper end is installed with projection direction adjusting assembly, the side of projection direction adjusting assembly is provided with dustproof structure, the bottom of the outer surface of inverted recess type frame right side is installed with projection angle adjusting assembly, the middle part of the outer surface of projector left end is fixedly installed with first driven shaft, and the first driven shaft is connected with inverted recess type frame left lower portion. The utility model is projected by the projection angle adjusting assembly of being set, the angle of projector is conveniently adjusted, the projection direction adjusting assembly of being set is conveniently adjusted, the direction of projector is projected, the dustproof structure of being set is conveniently protected lens when projector is not used, reduce the accumulation of dust.

A projection system capable of realizing various image expressions is provided. The projection system includes a screen (100), an image projection device (200) that projects an image toward the screen (100), and a conveyance stage (500) that holds the image projection device (200) and is movable. The conveyance stage (500) has a projection direction variable portion that makes a projection direction of the image variable, and a support mechanism (400) that supports the screen (100) in a manner that allows adjustment of a position of the screen (100) in a direction that intersects a setting surface on which the conveyance stage (500) is set.

The invention discloses an indoor three-dimensional model generation method and device, equipment, a medium and a product, and the method comprises the steps: obtaining indoor three-dimensional scene data which comprises a plurality of objects, and each object carries corresponding identification information; projecting each object in the three-dimensional scene data to a projection plane based on a preset projection direction, and generating a scene top view comprising a plurality of two-dimensional blocks; receiving a modification operation of a user for the scene top view; on the basis of the modification operation, updating depth information of the modified target two-dimensional block, and generating a new scene top view comprising the hierarchical display control on the basis of the updated depth information; and determining the corresponding three-dimensional model based on the identification information of the object corresponding to each two-dimensional block in the new scene top view, and synthesizing the plurality of three-dimensional models into the indoor three-dimensional model, so that the generation efficiency of the indoor three-dimensional model can be improved through the mode.

A 3D display device (100), comprising a carrier (101), wherein the carrier (101) is provided with a plurality of optical projection units (1). Each optical projection unit (1) has a plurality of independent projection surfaces (10). The projection surfaces (10) comprise a first projection surface (11) formed by a first direction and a second direction that are perpendicular to each other, a second projection surface (12) formed by the first direction and a third direction that are perpendicular to each other, and a third projection surface (13) formed by the second direction and the third direction that are perpendicular to each other. Projection directions provided by the projection surfaces (10) of a single optical projection unit (1) are unidirectional outward directions. The projection direction of the first projection surface (11) is a unidirectional outward first projection direction that passes through the first projection surface (11). The projection direction of the second projection surface (12) is a unidirectional outward second projection direction that passes through the second projection surface (12). The projection direction of the third projection surface (13) is a unidirectional outward third projection direction that passes through the third projection surface (13).

The invention discloses an assembly quality detection robot path planning method based on drawing understanding, and belongs to the technical field of assembly quality control. According to the method, the problem that the pose planning of the sensor needs to depend on the understanding of two-dimensional drawings by professionals in the existing method is solved. According to the method, firstly, key labeling information is identified from a drawing, and a target line referred by the labeling information in the drawing is confirmed; selecting an optimal skeleton template according to the matching score of the two-dimensional drawing and each skeleton template, mapping a target line referred to by a to-be-detected marking symbol to the surface of the three-dimensional CAD model of the assembly according to the projection direction of the optimal skeleton template, planning the robot to an optimal observation position, collecting an image by using a camera deployed on the robot, and carrying out the detection of the three-dimensional CAD model of the assembly. And intercepting a region of interest from the image according to the position of the feature corresponding to the target line in the three-dimensional CAD model, thereby realizing automatic detection of the assembly quality of the assembly. The method can be applied to the technical field of assembly quality control.

A method for detecting a position of a vehicle seat that may cause a safety risk to an occupant of the seat; the invention relates to a seat comprising a slide extending in a longitudinal direction, a seat base slidably mounted on the slide, and a backrest hinged to the seat base via a first hinge axis, the vertical direction being perpendicular to the longitudinal direction and the first hinge axis, a reference point being defined on the area of the backrest of the seat, a reference line being defined, the origin is defined on a reference line. The method comprises: a) determining (42) a deviation between the origin point and the projection of the reference point on the reference line along the projection direction, b) comparing (44) the deviation to a threshold value, c) generating (46) a signal indicative of a security risk when the deviation is greater than the threshold value.

The utility model relates to the related technical field of scene atmosphere lamps, in particular to a scene atmosphere lamp with adjustable brightness, which comprises a base, a power supply module is mounted in the base, one side of the upper part of the base is connected with a light sensor, the other side of the upper part of the base is connected with an adjusting knob, the center of the upper part of the base is connected with a lamp post, and the lamp post is connected with a lamp holder. And a mounting assembly is arranged above the lamp pole. According to the scene atmosphere lamp with the adjustable brightness, through the arrangement of the mounting assembly, stable mounting and convenient dismounting of the lampshade are achieved, large friction force can be generated through a precisely-matched thread structure, it is ensured that the lampshade is not prone to loosening after being mounted, and the consistency of the light projection direction and effect is ensured; the arrangement of the springs, the clamping plates and the clamping grooves provides additional stable guarantee for the lampshade, when the lampshade is screwed to a certain degree and the clamping grooves are aligned with the telescopic grooves, the springs push the clamping plates to be accurately embedded into the clamping grooves, a tight clamping structure is formed, and the connection strength between the lampshade and the connecting base is further enhanced.

The invention provides a pulse laser system and a pulse laser drilling method. The pulse laser system comprises a transmitting module used for providing a pulse laser beam, the pulse width of the pulse laser beam ranges from 50 fs to 500 fs, the repetition frequency of the pulse laser beam ranges from 0.5 GHz to 10 GHz, and the pulse energy of the pulse laser beam ranges from 100 muJ to 1000 muJ; the light beam adjusting module is used for converting the pulse laser beam into a first modulated laser beam; an optical module for converting the first modulated laser beam into a second modulated laser beam; a scanning module for selectively projecting a second modulated laser beam in a projection direction; the focusing module is used for converting the second modulated laser beam into a flat-topped laser beam projected to a workpiece to be drilled; and the monitoring module is used for monitoring the drilling state of the workpiece to be drilled in real time. Therefore, the machining efficiency of the to-be-drilled workpiece can be improved, and meanwhile the damage rate of the to-be-drilled workpiece is reduced.

The invention relates to the technical field of computer aided design (CAD), in particular to an indicating surface switching method and system, and the method comprises the steps: displaying a three-dimensional model in a three-dimensional scene, and displaying an indicator used for indicating the three-dimensional model, the indicator comprises a plurality of indicating surfaces, and one indicating surface corresponds to one observation visual angle of the three-dimensional model; identifying a projection area of an orthogonal surface, facing the user, of the indicator in the current observation direction; the projection area refers to an image area formed when the orthogonal surface is projected on the projection plane along the projection direction; when the projection area is greater than or equal to a set area threshold value, newly adding an expansion surface at a position adjacent to the orthogonal surface; and when the projection area is smaller than a set area threshold value, hiding the expansion surface. Therefore, under the condition that the options are relatively limited, the number of the options can be expanded to a certain degree, and meanwhile the situation that the space is disordered due to the fact that the expansion surface is increased can be avoided.

The invention discloses a fry feeding behavior monitoring and accurate feeding system based on visual identification, and belongs to the technical field of aquaculture, the system comprises a base plate with buoyancy, a feeding box is arranged above the base plate, a discharging port of the feeding box is formed in the bottom of the base plate, a second frame with a frame structure formed by splicing pipe bodies is connected to the lower portion of the base plate, and the second frame is connected with the bottom of the base plate. The two opposite side faces of the bottom of the second frame are connected with a first frame through connecting rods, a first image collector is arranged on one side of the first frame, an energy storage box is arranged on the first frame on the same side of the first image collector, and the energy storage box is externally connected with light sources in at least two projection directions. According to the system, the problems that an existing device is large in monitoring blind area and image blurring is caused by insufficient light are solved, fodder is accurately put according to monitoring data, and the system is high in practicability and high in practicability. And the fed feed can be uniformly diffused and suspended for a long time, so that the feeding rate of the fries is improved.

The invention provides a screw angle measuring, guiding and positioning method for a proximal femur compression steel plate, which is applied to the technical field of orthopedic surgery assistance and comprises the following steps of: constructing a three-dimensional bone morphological model of the proximal femur of a patient before a surgery, simulating different X-ray projection directions and generating a projection of a virtual guide needle on a two-dimensional image; measuring an included angle parameter between a femoral neck axis and a guide pin projection, correcting the included angle parameter into a screw incident angle parameter, further designing a guider shell, a guide hole and a sensor layout based on the angle parameter, performing matched simulation on a three-dimensional bone form model, and evaluating the fitting degree of the guider on the bone surface and the guide hole positioning precision; therefore, accurate reference is provided for preoperative screw placement path planning and intraoperative guider use, quantifiable design and guide control of the incident angle of the screw are achieved, and deviation of screw placement is reduced.

The utility model relates to the field of rice screening, and discloses a screening device of a rice huller, the screening device comprises a machine body and further comprises a material distributing mechanism and a screening mechanism, the screening mechanism is located below the material distributing mechanism, the screening mechanism comprises an inclined screening plate, and the material distributing mechanism comprises a feeding pipe, a shell, a bottom plate and a material distributing plate; a feeding hole and a discharging hole are formed in the shell, and the feeding pipe is inserted outside the feeding hole and is communicated with the shell; the bottom plate is fixedly connected with the two sides of the shell and coaxially aligned with the feeding port, one end, away from the discharging port, of the bottom plate is fixedly connected to the inner wall face of the shell, the other end, away from the feeding port, of the bottom plate is obliquely and downwards arranged, and the projection direction of the bottom plate on the horizontal plane is parallel to the rice screening and conveying direction of the screening plate. And the material distributing plate is vertically and fixedly connected to the bottom plate and comprises a feeding end and a discharging end, the feeding end is far away from the discharging opening and close to the center of the bottom plate, the discharging end is far away from the center of the bottom plate and is obliquely and downwards arranged, and the screening efficiency of rice is improved.