187 results about "Object distance" patented technology

The invention discloses a target positioning method and system based on target height correction monocular distance measurement, and the method comprises the steps: carrying out the calibration of a ship-borne camera through a data set, employing a YOLO target detection model, carrying out the detection of video data collected by the ship-borne camera, and obtaining the bounding box information of a target; and secondly, according to bounding box information, calculating a yaw angle of the target relative to a main point of the shipborne camera, and obtaining an azimuth angle by combining an orientation angle of the main point of the shipborne camera. And then height correction is carried out to measure the distance between the target ship and the shipborne camera. And finally, according to the azimuth angle and the distance, combining the latitude and longitude coordinates of the shipborne camera to obtain the actual geographic latitude and longitude coordinates of the target ship. According to the method, the goodness of fit between distance measurement and actual image geometry is improved, the actual object distance is reflected more accurately, and accurate and efficient target positioning is carried out.

The invention discloses a building outer wall defect intelligent inspection analysis method and device based on an unmanned aerial vehicle. The intelligent inspection analysis method comprises the steps that a building CAD model is imported, and inspection parameters are set; the path planning module generates a parallel flight path; the laser radar measures the distance from the wall surface in real time, and meanwhile image interference caused by high-altitude wind noise is removed; the data acquisition module synchronously acquires an infrared image, a visible light image and object distance data; utilizing the trained AI model to intelligently identify defects and calculating defect areas; and generating a visual report. According to the intelligent inspection analysis method, automatic identification and automatic early warning of wall surface defects can be realized, a visual report can be generated, and compared with a traditional inspection mode of manual identification and labeling, the inspection efficiency and accuracy can be greatly improved, and high-altitude operation is not needed.

A distance measurement device includes a light emitter for transmitting pulsed light and a light receiver for detecting reflected light from an object, providing an output signal. The device has at least one of a circuit or a processor with memory storing executable computer program code. The circuit or processor calculates an object distance using the time of flight of the pulsed light. Additionally, a histogram representing received light intensity for each time of flight is generated from the output signal. The device determines whether the object is within a short-distance range based on the timing of a peak in the histogram, and calculates the object distance using both a feature value related to the number of light reflections and the timing of the peak's decline.

To reduce the size and weight of a lens group to be driven in a zoom lens.SOLUTION: The zoom lens L0 includes a negative first lens group, a positive intermediate group, and a negative subsequent group, and the intermediate group includes positive first and second intermediate lens groups. During zooming, the first lens unit is configured not to move, and the first and second intermediate lens units are configured to move. The first lens group includes two or more lenses. Where mp1 and mp2 are amounts of movement of the first and second intermediate lens units during zooming from the wide-angle end to the telephoto end, fp1 and fp2 are focal lengths of the first and second intermediate lens units, fw and ft are focal lengths of the zoom lens at the wide-angle end and the telephoto end, and TTLw is a sum of a distance from a lens surface closest to the object side to a lens surface closest to the image side at the wide-angle end and a distance from the lens surface closest to the image side to the image plane. 0.10 ≤ mp2 / mp1 ≤ 0.82, 1.23 ≤ fp2 / fp1 ≤ 10.00, 1.50 ≤ ft / fw ≤ 6.00, and 0.10 ≤ TTLw / fw ≤ 10.00 are satisfied.SELECTED DRAWING: Figure 1

The present disclosure relates to an apparatus and method for estimating a distance to an object. More particularly, the apparatus includes a camera for capturing surrounding images, a LiDAR for generating a projection image by analyzing surrounding three-dimensional spatial positions, an object detection model for detecting objects in the images, a depth estimation model for estimating distances to the objects, a training unit for training the object detection model and the depth estimation model, and an estimation unit for detecting the objects in the images and estimating the distances to the objects using the object detection model and the depth estimation model. The apparatus and method may detect objects and estimate distances to the objects by using only a single camera image.

The application discloses a stereovision-based slurry and slag identification method, and belongs to the technical field of tunnel construction, and specifically comprises the following steps: two same cameras are placed above the slurry and slag, fixed after being adjusted to the same height and the imaging half-frames are overlapped; a calibration plate is shot to obtain the baseline distance of the optical centers of the two cameras; the exposure time is determined in combination with the camera accuracy, the slurry and slag movement speed and the imaging magnification; two images of the slurry and slag are synchronously shot, the coordinate system is established, the sight distance difference and the imaging point spacing are calculated, the object distance is solved based on the geometric relationship constructed by the Gaussian imaging formula and the slurry and slag point position and the imaging plane and the camera optical center; finally, the three-dimensional point cloud model is established according to the object distance, and the slurry and slag shape, volume and surface area are output. The application solves the problems of motion blur, image distortion and the inability to accurately identify the size of the slurry and slag in the identification of the slurry and slag, can improve the identification accuracy, and meets the intelligent and refined construction requirements of large shield projects.

The application discloses a high-resolution oblique-axis optical lens, comprising, from the object side to the image side, a first lens, a second lens, a third lens, a fourth lens, a diaphragm, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens, a protective glass and an image sensor; the first lens is a filter; the second lens is a biconvex spherical lens with positive focal power; the third lens is a spherical lens with negative focal power; the fourth lens is a spherical lens with positive focal power; and the fifth lens is a biconcave spherical lens with negative focal power. The technical scheme balances and corrects optical aberrations of all levels by reasonably distributing the focal power of the lenses, reasonably matching the optical materials and shapes, and utilizes the cylindrical lens to correct astigmatism caused by the optical path of the meridian arc vector plane of the protective glass, so that the advantages of large target surface, low distortion, ultra-short object distance, high resolving power and the like of the lens are achieved.

The application relates to a zoom tracking curve determination method and device, computer equipment and a storage medium. The method comprises the following steps: acquiring imaging data of a camera, wherein the imaging data comprises a camera parameter and a predicted object distance; calculating a depth of field based on the imaging data, taking a corresponding preset zoom tracking curve set in which a reference object distance is located in the depth of field as a curve search range; and performing curve search based on the curve search range to determine a target zoom tracking curve. By acquiring the predicted object distance, the search range of the zoom tracking curve is reduced, and zoom and focusing operations are performed in the limited curve search range, so that the image definition in the whole zooming and focusing process of the camera can be ensured.

The invention discloses an imaging system, which is characterized by comprising a front objective lens group, a light splitting assembly and a rear objective lens group, wherein the objective lens front group has positive focal power and comprises a first lens with negative focal power, a second lens with positive focal power, a third lens with negative focal power and a fourth lens with positive focal power which are sequentially arranged from an object side to an image side; the objective lens rear group has positive focal power and comprises a fifth lens with positive focal power, a sixth lens with negative focal power, a seventh lens with positive focal power and an eighth lens with negative focal power which are sequentially arranged from the object side to the image side; the light splitting assembly is arranged between the objective lens front group and the objective lens rear group; when the object distance changes, the imaging system is focused by adjusting the position of the objective lens front group relative to the light splitting assembly; the number of the lenses with focal power in the imaging system is eight; and the effective focal length value Fa of the front group of the objective lens and the total effective focal length value F of the imaging system meet the condition that Fa / F is greater than or equal to 2.674 and less than or equal to 3.460.

The application provides a kind of deep learning optical imaging system design method based on complex function neural network, comprising the following steps: step one, object distance, system focal length, F number as input, according to the ideal optical system imaging relationship, determine image distance, imaging scale ratio;Step two, according to the imaging scale ratio and the object image of ideal optical system, the image of ideal optical system is calculated;Step three, construct complex function generator network model, step four, construct discriminator network model, step five, after the establishment, training of the above-mentioned complex function neural network deep learning model, step six, use phase.The deep learning optical imaging system design method based on complex function neural network provided by the application solves the correlation between the advantages and disadvantages of the design result and the experience value of the designer, without the designer providing initial structure parameters;Greatly improve the computing ability and optimization speed.

The invention relates to a parameter calibration method and device of image acquisition equipment and computer equipment. The method comprises at least one of the following two steps: a) determining a gain matrix corresponding to a first target calibration mode and / or a first target object distance based on a first gain matrix and a trained gain mapping relation; and b) determining an out-of-focus conversion coefficient corresponding to the second target calibration mode and / or the second target object distance based on the first out-of-focus conversion coefficient, the second out-of-focus conversion coefficient and the trained out-of-focus mapping relation. And writing the obtained gain matrix and / or defocus conversion coefficient into a memory in the image acquisition equipment for optical shadow correction and phase detection automatic focusing in an image signal processing stage. Through the trained gain mapping relation and the trained defocus mapping relation, corresponding gain matrixes and defocus conversion coefficients under various calibration modes and various object distance conditions can be generated, and the calibration cost and the calibration time consumption are reduced.

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 invention discloses a displacement measurement method, system and device based on double-circle characteristic object self-calibration. The method comprises the steps that a double-circle characteristic object composed of a center circle and an auxiliary circle is arranged; double-circle images are continuously collected, double-circle pixel coordinates and pixel radiuses are extracted, and recognition effectiveness is ensured by combining double-circle joint verification; calculating the scale factor of each frame in real time based on the actual radius of the central circle, the pixel radius and the temperature / motion blur compensation coefficient; and converting the pixel offset of the central circle into linear displacement in the X / Y direction by taking the first frame as a reference and combining a scaling factor, and determining the in-plane angular displacement through a central circle-auxiliary circle characteristic vector included angle. The system comprises a bicircle feature object module, an image acquisition module, a feature recognition module, a self-calibration module and a displacement calculation module. The dynamic measurement device comprises a fixing assembly, an industrial camera, a processor and an output assembly. The method does not need to calibrate camera parameters in advance, is not influenced by object distance changes, can realize high-precision two-dimensional dynamic displacement measurement, and is suitable for health monitoring of structures such as bridges and buildings.

The embodiment of the invention provides an imaging method and device, electronic equipment and a medium, and is used for solving the problem that a full-color imaging partial region is fuzzy under the condition of no light supplement in the related technology. According to the embodiment of the invention, the image sensor is provided with a plurality of optical filters with different thicknesses, and the optical filters with different thicknesses can improve the definition of the areas where the objects with different object distances collected in the image are located, so that the objects with different distances can present clearer details in the multi-frame image. Moreover, after the collection instruction is received, the image collection equipment correspondingly adjusts the focusing parameters of the image collection equipment according to the optical filters with different thicknesses to ensure that each optical filter can work in the corresponding optimal focusing state, and in this way, the image collection equipment can collect multiple frames of images, so that the image collection efficiency is improved. Part of the area in each frame of image has high definition. And fusion processing is carried out on the clear areas in the collected multiple frames of images, so that an overall clear target image can be obtained.

1. Name of the product in this design: Circular portion of a graphical user interface for remotely operating a camera lens for electronic devices. 2. Application of this design: An electronic device for running and displaying programs, wherein the circular portion of the graphical user interface for remotely operating a camera lens is used to adjust light, object distance, and image distance. 3. The key design features of this product are the wheel rim area in the graphical user interface that is not covered by the red semi-transparent layer. 4. The picture or photo that best illustrates the key design points: Design 1 front view. 5. The design for which protection is sought includes color. 6. For electronic devices, which are conventionally designed, the rear view, left view, right view, top view, bottom view, and perspective view of Design 1 and Design 2 are omitted. 7. Design 1 is designated as the basic design. 8. Uses of graphical user interface: For remote operation of lenses in devices such as digital SLR cameras and mirrorless cameras, allowing lens adjustments to be made without direct contact with the camera body. 9. Human-computer interaction method of graphical user interface: The aperture ring, focus ring 1 and focus ring 2 shown in the main view of Design 1 and the main view of Design 2 can be scrolled vertically; after dragging the aperture ring, focus ring 1 and focus ring 2 and making vertical scrolling, the main view of Design 2 changes to the interface change state diagram of Design 2, thereby remotely adjusting the light, object distance and image distance in the camera lens. 10. Other situations requiring explanation: The part not covered by the red semi-transparent layer is the part of the product for which protection is required; the fonts, numbers and graphics covered by the red semi-transparent layer are not for protection.

The present application relates to the field of processing measurement technology, and more particularly to a kind of automatic measurement method and system for engine box class part machining aperture.The method includes the following steps: obtaining original aperture image;Using local gradient sliding window to locate initial edge point set, determining the tilt angle of viewing axis and the deflection azimuth angle of major axis based on fitting method, to realize the independent separation of the two;Using the deflection azimuth angle of major axis to construct rotation relationship to obtain spindle alignment point set;Using the tilt angle of viewing axis to carry out projection transformation to obtain orthogonal projection point set;Based on the tilt angle of viewing axis, determine the local object distance drift of each edge pixel point, and then determine the non-uniform magnification correction gain, carry out numerical compensation restoration on orthogonal projection point set, to obtain the final machining aperture size;Output compensation signal to drive machine tool compensation actuator to adjust tool offset value.The present application solves the non-uniform magnification distortion problem caused by probe rod droop, and realizes the true value restoration of space light field.

The application discloses a facies intertidal zone sessile organism investigation method based on visual modeling, first, the low tide period of spring tide day is determined in combination with the data of the tidal station, the orthographic image and three-dimensional model of the investigation area are acquired by using the RTK unmanned aerial vehicle, the accurate investigation range is demarcated and the entry and exit paths are planned through the geographic information system processing. The slope parameters are calculated by using the digital land surface model and the personnel equipment configuration is optimized, the ground control points are laid on the site, and the geodetic coordinate system reference is established. The double route oblique photography mode is adopted, the image shooting sampling is carried out at a 45-degree visual angle, a 0.4m object distance and a 70% image overlap rate, the high-precision three-dimensional ecological model is generated through the point cloud reconstruction in combination with the morphological identification result of the species, and the parameters such as the habitat density, interspecific competition and light adaptability of the sessile organism are efficiently investigated.

An image display method and apparatus, an electronic device, and a storage medium. The image display method can be applied to a head-up display device, the head-up display device comprising a display screen and a light splitting element. The method comprises: acquiring a pupillary distance of a target subject (S1001); on the basis of the pupillary distance of the target subject, a preset virtual image distance, and a preset object distance, determining a target image disparity between a left-eye virtual image and a right-eye virtual image, the preset object distance being an ideal distance between the target subject and a three-dimensional object observed by the target subject by means of the left-eye virtual image and the right-eye virtual image (S1003); on the basis of the difference between the target image disparity and an initial image disparity, adjusting an initial pixel assignment scheme of the display screen, and obtaining a target pixel assignment scheme, the initial pixel assignment scheme being used to enable the distance between the formed left-eye virtual image and right-eye virtual image to be equal to the initial image disparity (S1005); and, on the basis of the target pixel assignment scheme, displaying an image to be displayed (S1007). Using this method ensures the comfort of users with different pupillary distances when viewing an image having a three-dimensional effect.

The utility model discloses a lens assembly and monitoring equipment. The lens assembly comprises a lens, a detector, a focusing adjusting assembly and a return stroke difference eliminating assembly. The lens comprises a focusing group. The focus adjusting assembly comprises a first adjusting part and a second adjusting part. The first adjusting piece is connected with the focusing group, the lens or the detector, and the first adjusting piece and the second adjusting piece are connected through a reversing mechanism. The return stroke difference eliminating assemblies are evenly distributed in the circumferential direction of the first adjusting piece and comprise elastic pieces. Under the action of the elastic piece, matched parts in the reversing mechanism abut against each other, so that the first adjusting piece moves along the optical axis of the lens under the condition that the second adjusting piece is rotated, and the distance between the focusing group and the detector is adjusted. Matched parts in the reversing mechanism abut against each other through the elastic piece, the second adjusting piece is in a close fit state with the first adjusting piece all the time in the rotating process, the return stroke difference is eliminated, and it is ensured that focusing is clear under all object distances.

The embodiment of the invention discloses a line scanning industrial lens. The line scanning industrial lens comprises fourteen lenses which are sequentially arranged from the object space to the image space along the optical axis. Wherein the first lens to the seventh lens form a fixed group, the eighth lens to the twelfth lens form two movable groups, the thirteenth lens and the fourteenth lens form three fixed groups, and the two movable groups move back and forth along an optical axis to realize object distance change of the line scanning industrial lens; according to the line scanning industrial lens provided by the embodiment of the invention, through matching of lens materials, reasonable distribution of focal power of each lens and adoption of a floating focusing mode, the design of the line scanning lens capable of giving consideration to low distortion, large target surface and high resolution within a working distance of 200mm-1000mm is realized, the focal length of the system is 31mm, the maximum aperture is F4, the optimal object distance is 600mm, and the distortion lt is realized; 1%, and the imaging quality can reach MTF71pl / mmgt; and 0.3.

The embodiment of the application discloses a tunnel deformation monitoring method based on line structured light, relates to tunnel engineering monitoring technology, and comprises the following steps: acquiring a laser line image projected on the inner wall of a tunnel and performing pretreatment; inputting the pretreated image into a deep learning semantic segmentation model to output a pixel region of the laser line in the image; performing center line extraction processing on the laser line pixel region to obtain a single-pixel-width laser center line; arranging a reference target with a known physical size in a monitoring scene; determining a dynamic scale coefficient between pixel size and physical size by processing an image containing the reference target; calculating physical displacement based on laser center lines at different time points by using the dynamic scale coefficient to determine the tunnel deformation; and the method can effectively overcome the scale uncertainty problem caused by the camera object distance and attitude change, significantly improves the measurement accuracy, environmental adaptability and system robustness, and realizes high-precision real-time automatic monitoring.

The utility model relates to a machine vision and industrial detection technology, in particular to a rapid focusing industrial lens structure, an industrial lens, a control system and an industrial vision detection device, wherein the rapid focusing industrial lens structure adopts an electrowetting liquid lens to realize millisecond-level automatic focusing. A fast focusing industrial lens structure is composed of eight glass lenses and an electric control liquid lens, and the nominal value of the optical focal length is 35 mm. Within the object distance range of 225-600mm, the liquid lens realizes millisecond-level automatic focusing by adjusting the curvature of a liquid interface, and the optical back focal length and the mechanical back focal length are kept unchanged. Through actual measurement, the absolute value of lens distortion is less than or equal to 2%, the curvature of field is less than or equal to + / -0.2 mm, the full-field relative illumination is greater than or equal to 95%, and the high-resolution imaging requirements of industrial vision, automatic detection and robot precise positioning scenes can be met.

The application discloses an eye light therapy system and device, which comprises a light system including a light source module for emitting light, a reflection system for reflecting the light to the user's eyes, and an adjustment system for adjusting the position of the light source module in the light system and / or adjusting the position of the reflection system to adjust the object distance of the light source module. The application can also adjust the object distance of the light system during the process of the light system irradiating the eyes, so as to change the distance between the visual image seen by the user's eyes and the eyes, move the visual image seen by the user in the distance, adjust the ability of the user to see near and far, and improve the sensitivity of the human eye to near and far.

The utility model discloses a large-aperture half-frame lens, which belongs to the technical field of optical lenses and comprises a first lens group, a second lens group, a third lens group and a fourth lens group which are sequentially arranged from an object side to an image side along an optical axis. The focal lengths of all the lens groups meet the following conditional expressions: 1.2 < f (G1) / f (G2-G4) < 3.7; -3.8 < f (G3) / f (G2-G4) <-1.3; 1.6 < f (G1) / f < 4.8. According to the large-aperture half-frame lens, various aberrations of various wave bands are corrected, the central field of view and the edge field of view have enough resolution, the large-aperture half-frame lens has the advantages of being simple in structure, small in size and large in aperture, and the high resolution of imaging with the object distance from infinity to close distance can be achieved.

The invention discloses a dispersion objective lens with a numerical aperture of 0.75. The dispersion objective lens comprises a triplet lens, three doublet lenses and three single lenses which are coaxially arranged, and after a continuous spectrum point light source passes through the dispersion objective lens, light with different wavelengths realizes differential convergence on an optical axis; a dispersion curve is fitted through a quadratic function, a small amount of dispersion linearity is sacrificed, better balance of an axial dispersion range and imaging quality is realized, and double targets of large dispersion range and high-quality imaging are achieved. The device has the advantage of long object distance, is convenient for front-end light path adjustment, and can be flexibly applied to various measurement systems.

The invention discloses a depth information determination method and electronic equipment, and the method comprises the steps: determining the actual offset of different image regions in an image collected by an image sensor, the actual offset being used for representing the lens movement amount required for achieving the focusing of a collected object in the image region by the image sensor; determining the actual object distance of the collected object in the image area based on the conversion relation between the configured offset and the object distance and the actual offset of the image area; and determining depth information of the image based on the actual object distance of the collected object in the image area.

The invention relates to the technical field of optical lens calibration and testing, in particular to a continuous zoom lens focal length automatic calibration device which comprises a bearing plate, a fixing plate arranged on the surface of the bearing plate and an image sensor fixedly arranged on the surface of the fixing plate. A focal length target adjusting mechanism and a target regulation and control mechanism are arranged on the upper surface of the bearing plate; through cooperation of a plurality of components in the focal length target adjusting mechanism, when the lens continuously zooms, the driving motor is started, so that the driving shaft drives the connecting rod and the lens assembly to move, meanwhile, through meshing of the driving gear, the threaded rod drives the target unit to synchronously move, and therefore the lens assembly and the target unit synchronously move; the long-focus lens is matched with a farther object distance, the short-focus lens is matched with a closer object distance, and based on the trigger switch, when the connecting rod is in contact with the trigger switch, the lens assembly is started to shoot, the shot image is displayed on the image sensor, and the focal length is automatically calibrated.

The application relates to a focusing method and device, a computer device and a storage medium. The method comprises the following steps: obtaining an estimated object distance of a target object; obtaining a corresponding focus value curve based on the estimated object distance, and determining a plurality of first focusing positions based on a peak point of the focus value curve; obtaining a corresponding farthest object distance curve and a nearest object distance curve based on the estimated object distance, and determining a focusing range based on a real-time zoom ratio, the farthest object distance curve and the nearest object distance curve; searching for a second focusing position based on the plurality of first focusing positions and the focusing range, wherein a focus value of the second focusing position for imaging the target object satisfies a preset condition. Through the application, the technical problem of low focusing efficiency in the related art is solved, the search process is shortened, the computing resource overhead is reduced, and the focusing efficiency is improved.

The utility model discloses a full-automatic gel imager, the distance between an industrial camera and a sample is adjusted through a lifting assembly so as to adjust the image taking range and adjust the size of an image through deformation, and compared with traditional digital amplification, the full-automatic gel imager adjusts the object distance between the camera and the sample through an electric mechanical structure so as to realize lossless image amplification. When a small sample is shot, an image does not need to be cut, each pixel is utilized to the maximum extent, an automatic in-out bin structure is arranged on the lower side of the ultraviolet lamp box, in-out bin of the ultraviolet lamp box can be electrically controlled, and the sample is convenient to take and place; according to the ultraviolet lamp box, the additional pollution risk caused by excessive contact of hands with the ultraviolet lamp box when the ultraviolet lamp box is pulled is avoided, light can be effectively supplemented by arranging a plurality of lighting assemblies, external light interference can be effectively avoided by the shading shell formed by the shading plate, and internal ultraviolet light leakage is effectively avoided.

To provide an optical system in which a focusable object distance is shortened while having high optical performance.SOLUTION: An optical system including, in order from an object side to an image side, a first lens group having a positive refractive power, a second lens group having a positive refractive power, and a third lens group, wherein, during focusing, the second lens group moves in an optical axis direction with respect to an image plane, the first lens group and the third lens group do not move with respect to the image plane, and the first lens group includes three negative lenses that are disposed consecutively in the optical axis direction on a side closest to the object, where f represents a focal distance of the entire optical system, sk represents an air-equivalent back focal distance when focusing is performed at infinity, and f2 represents a focal distance of the second lens unit.SELECTED DRAWING: Figure 1