733 results about "Large target" patented technology

The invention discloses a mechanical arm positioning and grabbing method based on machine vision, and relates to the technical field of machine vision and mechanical arm control, the method comprises the following steps: synchronously acquiring RGB-D images of a target scene through a multi-view camera array, and generating three-dimensional point cloud data through data fusion; an improved LSD algorithm and a PnP algorithm are adopted to calculate the initial pose of the target object, illumination distortion is eliminated in combination with the generative adversarial network, and three-dimensional coordinates are output; a mechanical arm motion error transfer model is constructed based on Monte Carlo simulation, and a candidate grabbing scheme set is generated through reinforcement learning; and an optimal grabbing scheme is screened through a preset priority evaluation rule, and a mechanical arm joint movement track and a control instruction set are generated. Through multi-modal data fusion and a nonlinear optimization algorithm, the technical problems of large target positioning deviation and sensitive illumination interference in a complex environment are solved, and the grabbing precision and robustness of the mechanical arm are improved.

The invention provides an optical lens, which comprises six lenses which sequentially comprise a first lens with negative focal power, a second lens with negative focal power, a third lens with negative focal power, a fourth lens with negative focal power, a fifth lens with negative focal power and a sixth lens with negative focal power from an object side to an imaging surface, the object side surface of the second lens is a concave surface, and the image side surface of the second lens is a convex surface; the object side surface and the image side surface of the third lens are convex surfaces; the fourth lens has positive focal power, and the object side surface of the fourth lens is a convex surface; the fifth lens has negative focal power, and the image side surface of the fifth lens is a concave surface; and the sixth lens has positive focal power. According to the optical lens provided by the invention, the six lenses with specific focal power are adopted, and through specific surface shape matching and reasonable focal power distribution, the imaging quality of the optical lens can be improved, the aberration can be reduced, the imaging quality of the optical lens can be improved, and the lens has one or more advantages of large target surface, large aperture, high imaging quality and the like.

The invention discloses a remote sensing image multi-scale semantic segmentation method based on a coding and decoding network, and relates to the technical field of computer vision and remote sensing image processing, and the method comprises the following steps: S1, obtaining image data, carrying out the preprocessing of an image, carrying out the normalization of the image to a specified size, and carrying out the data enhancement operation, the data enhancement operation comprises random rotation, overturning and zooming. According to the remote sensing image multi-scale semantic segmentation method based on the coding and decoding network, ResNeXt5032x4d is introduced to serve as a backbone network, grouping convolution is combined, multi-scale features are effectively extracted, the accurate recognition capacity of the model for the land cover type is improved, and through the fusion strategy of the self-adaptive feature cooperation module AFCM, the remote sensing image multi-scale semantic segmentation method based on the coding and decoding network is obtained. According to the method, local and global context information is fused, the segmentation capability of the model on a large target is enhanced through a parallel multi-scale convolution layer and cavity convolution, the accuracy and integrity of a segmentation result are ensured, and a segmented region is smoother and more complete.

The invention provides an optical lens, which comprises seven lenses in total, and sequentially comprises a first lens with negative focal power, a second lens with negative focal power, a third lens with negative focal power, a fourth lens with negative focal power, a fifth lens with negative focal power and a sixth lens with negative focal power from an object side to an imaging surface, the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a convex surface; the object side surface of the third lens is a concave surface, and the image side surface of the third lens is a convex surface; the object side surface of the fourth lens is a convex surface, and the image side surface of the fourth lens is a convex surface; the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a concave surface; the object side surface of the sixth lens is a convex surface, and the image side surface of the sixth lens is a concave surface; and the object side surface of the seventh lens is a convex surface, and the image side surface of the seventh lens is a concave surface. According to the optical lens provided by the invention, the imaging quality of the optical lens can be improved, the aberration can be reduced, the imaging quality of the optical lens can be improved, and the lens has one or more advantages of large target surface, large aperture, high imaging quality and the like.

The invention provides an optical lens, which comprises nine lenses from an object side to an imaging surface along an optical axis: a first lens with negative focal power, a second lens with negative focal power, a third lens with negative focal power, a fourth lens with negative focal power, a fifth lens with negative focal power and a sixth lens with negative focal power, the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface; the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface; the object side surface of the fourth lens is a concave surface, and the image side surface of the fourth lens is a convex surface; the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a convex surface; the sixth lens has negative focal power; the seventh lens has positive focal power; the eighth lens has negative focal power; and the ninth lens has positive focal power. According to the optical lens provided by the invention, through specific surface shape matching and reasonable focal power distribution, the lens has one or more advantages of short focus, miniaturization, large field angle, large aperture, large target surface, low distortion and low sensitivity.

The invention provides a lightweight visible light ship target detection method based on edge feature guidance, and relates to the technical field of ship detection image data processing, and the method comprises the steps: collecting remote sensing satellite images, and carrying out the random distribution of the images after screening and marking, and obtaining a training set and a verification set; the backbone network module comprises a plurality of Conv modules and C3k2 modules which are mutually stacked; the neck module comprises a detail-enhanced convolution module and a hierarchical pyramid module based on dynamic feature aggregation; in the head module, after the features of all detection layers are subjected to independent convolution processing, feature transformation is carried out through a multi-branch detail enhancement convolution module; performing data enhancement on the training set; and obtaining a trained ship target detection model through a back propagation algorithm and a gradient descent optimization method. According to the invention, the lightweight and precision improvement of the detection head are realized, the robustness of the model to the illumination change is enhanced, and the global semantic information and the local detail features are fused to balance the detection of the small target and the large target.

The invention provides an optical lens, which comprises seven lenses in total, and sequentially comprises a first lens with negative focal power, a second lens with negative focal power, a third lens with negative focal power, a fourth lens with negative focal power, a fifth lens with negative focal power and a sixth lens with negative focal power from an object side to an imaging surface, the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface; the object side surface of the third lens is a concave surface, and the image side surface of the third lens is a convex surface; the object side surface of the fourth lens is a convex surface, and the image side surface of the fourth lens is a concave surface; the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a convex surface; the object side surface of the sixth lens is a concave surface, and the image side surface of the sixth lens is a concave surface; and the object side surface of the seventh lens is a convex surface, and the image side surface of the seventh lens is a concave surface. According to the optical lens provided by the invention, the imaging quality of the optical lens can be improved, the aberration can be reduced, the imaging quality of the optical lens can be improved, and the lens has one or more advantages of large target surface, large aperture, high imaging quality and the like.

The invention discloses a target tracking method fusing visual perception and motion control. The method comprises the following steps: improving a YOLOv8 model and pre-training the improved YOLOv8 model; s2, preprocessing an image acquired by a camera, inputting the preprocessed image into the YOLOv8 model trained in the step S1, and outputting a target bounding box and a target center pixel coordinate; target center pixel coordinates are transmitted to a development board of a pre-burning algorithm program through a serial port, the development board is designed according to a stepping motor mathematical model, sine acceleration and deceleration serve as the basis, PID control, sliding mode control and fuzzy control algorithms are fused, and code burning is generated after in-loop simulation optimization; and the development board drives a stepping motor to adjust the posture of the holder according to the target center pixel coordinate control instruction, so that the target stops moving after being kept in the view center. The problems that a traditional YOLOv8 model is large in target recognition error under the complex background, PID control is prone to oscillation under the nonlinear working condition, buffeting exists in sliding mode control, and response lags when fuzzy control is independently used are solved.

The invention provides an optical lens, and the optical lens sequentially comprises a first reflection element with positive focal power from an object side to an imaging surface, the first reflection element comprises an incident surface, a reflection surface and an emergent surface, the incident surface of the first reflection element is a convex surface, and the emergent surface of the first reflection element is a convex surface; included angles of 45 degrees are respectively formed between the reflecting surface of the first reflecting element and the optical axes of the incident surface and the emergent surface of the first reflecting element; the second lens has focal power; the third reflecting element has focal power and comprises an incident surface, a reflecting surface and an emergent surface; included angles of 45 degrees are respectively formed between the reflecting surface of the third reflecting element and the optical axes of the incident surface and the emergent surface of the third reflecting element; and the fourth lens has negative focal power. The optical lens provided by the invention adopts two reflecting elements with diopters as light path turning elements, so that a light path is turned twice to realize periscopic telephoto, and the optical lens has the characteristics of small volume, large aperture, large target surface and good performance.

The invention provides an optical lens, which comprises nine lenses from an object side to an imaging surface along an optical axis: a first lens with negative focal power, a second lens with negative focal power, a third lens with negative focal power, a fourth lens with negative focal power, a fifth lens with negative focal power and a sixth lens with negative focal power, the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface; the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface; the object side surface of the fourth lens is a concave surface, and the image side surface of the fourth lens is a convex surface; the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a convex surface; the sixth lens has negative focal power; the seventh lens has positive focal power; the eighth lens has negative focal power; and the ninth lens has positive focal power. According to the optical lens provided by the invention, through specific surface shape matching and reasonable focal power distribution, the lens has one or more advantages of short focus, miniaturization, large field angle, large aperture, large target surface, low distortion and low sensitivity.

The invention belongs to the technical field of image processing, and discloses a nonferrous metal target detection method and system for a scraped car. According to the method, through deep coupling of a GAN bimodal fusion network and a double-backbone network, a scraped car nonferrous metal target detection model is constructed, so that nonferrous metals in scraped cars are efficiently and accurately sorted. A bimodal fusion network is introduced into a model input layer, a fusion image with infrared thermal saliency and visible light texture features is generated, and the problem of cross-modal information splitting is solved; according to the dual-backbone network, standard convolution is replaced by a three-branch structure of an MGHCM module, large target contours, middle target semantics and small target details are synchronously captured, and self-adaptive shunting and efficient fusion of multi-scale features are achieved in cooperation with dynamic feature routing of a DHFBlock module; and the detection head network is optimized into a rotating frame prediction and cross-modal cross entropy classification mechanism so as to adapt to the placement scene of the metal fragments at any angle.

The invention provides an optical lens, which comprises nine lenses from an object side to an imaging surface along an optical axis: a first lens with negative focal power, a second lens with negative focal power, a third lens with negative focal power, a fourth lens with negative focal power, a fifth lens with negative focal power and a sixth lens with negative focal power, the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface; the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface; the fourth lens has negative focal power, and the object side surface of the fourth lens is a concave surface; the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a convex surface; the sixth lens has negative focal power, and the image side surface of the sixth lens is a concave surface; the seventh lens has positive focal power; the eighth lens has negative focal power; and the ninth lens has positive focal power. According to the optical lens provided by the invention, through specific surface shape matching and reasonable focal power distribution, the lens has one or more advantages of short focus, miniaturization, large field angle, large aperture, large target surface, low distortion and low sensitivity.

The invention discloses an industrial lens with a large target surface, low distortion and low chromatic aberration. An optical system of the industrial lens is composed of a meniscus positive lens L1, a meniscus negative lens L2, a biconcave negative lens L3, a positive lens L4, a diaphragm C, a positive lens L5, a biconvex positive lens L6, a biconcave negative lens L7, a biconvex positive lens L8, a biconvex positive lens L9, a biconcave negative lens L10, a biconvex positive lens L11 and an image plane IMG which are sequentially arranged along an incident light path, and the object side face of the meniscus positive lens L1 is a convex face; the object side surface of the meniscus negative lens L2 is a convex surface; the biconvex positive lens L6 and the biconcave negative lens L7 form a first gluing group; and the biconvex positive lens L9 and the biconcave negative lens L10 form a second gluing group. The industrial lens has the advantages of small size, large target surface, low distortion, low chromatic aberration and high resolution.

The invention discloses a miniature lens with a large target surface and a large aperture. Comprising a first lens with negative focal power, a second lens with positive focal power, a third lens with positive focal power, a fourth lens with negative focal power, a fifth lens with positive focal power, a sixth lens with negative focal power and a seventh lens with positive focal power which are sequentially arranged from an object side to an image side, the large-target-surface large-aperture miniature lens comprises a second lens with positive focal power, a third lens with negative focal power, an eighth lens with negative focal power and a ninth lens with positive focal power, and further comprises an aperture diaphragm which is located between the second lens and the third lens or located between the third lens and the fourth lens. And by reasonably setting the proportional relation of key parameters, the total optical length is within 30mm under the condition of ensuring a large aperture of at least F1.05 and a large target surface of IH6.5 mm, and the effect of a miniature lens is obtained.

The invention provides an optical lens, which comprises nine lenses from an object side to an imaging surface along an optical axis: a first lens with negative focal power, a second lens with negative focal power, a third lens with negative focal power, a fourth lens with negative focal power, a fifth lens with negative focal power and a sixth lens with negative focal power, the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface; the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface; the object side surface of the fourth lens is a concave surface, and the image side surface of the fourth lens is a convex surface; the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a convex surface; the sixth lens has negative focal power; the seventh lens has positive focal power; the eighth lens has positive focal power; and the ninth lens has positive focal power. According to the optical lens provided by the invention, through specific surface shape matching and reasonable focal power distribution, the lens has one or more advantages of short focus, miniaturization, large field angle, large aperture, large target surface, low distortion and low sensitivity.

The invention provides an optical lens, which comprises seven lenses in total, and sequentially comprises a first lens with negative focal power, a second lens with negative focal power, a third lens with negative focal power, a fourth lens with negative focal power, a fifth lens with negative focal power and a sixth lens with negative focal power from an object side to an imaging surface, the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface; the object side surface of the third lens is a concave surface, and the image side surface of the third lens is a convex surface; the object side surface of the fourth lens is a convex surface, and the image side surface of the fourth lens is a convex surface; the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a convex surface; the object side surface of the sixth lens is a concave surface, and the image side surface of the sixth lens is a concave surface; and the object side surface of the seventh lens is a concave surface, and the image side surface of the seventh lens is a convex surface. According to the optical lens provided by the invention, the imaging quality of the optical lens can be improved, the aberration can be reduced, the imaging quality of the optical lens can be improved, and the lens has one or more advantages of large target surface, large aperture, high imaging quality and the like.

The invention discloses an infrared anti-unmanned aerial vehicle detection method based on an improved YOLO framework. The infrared anti-unmanned aerial vehicle detection method comprises the following steps: S1, preprocessing an infrared image and calculating energy distribution; s2, embedding the backbone network into an improved convolution module and adaptive wavelet basis convolution, and optimizing feature extraction in stages; s3, reinforcing local details and global contours of the feature maps by a multi-granularity pooling mechanism; s4, realizing cross-layer feature fusion through a feature aggregation propagation mechanism, and generating a comprehensive multi-scale feature map; s5, a lightweight detection channel is specially arranged to enhance the small target detection capability, and other standard detection heads are responsible for classified positioning of medium and large targets; and S6, outputting a final prediction result through a context sensing weighted frame fusion algorithm. Through adaptive wavelet feature enhancement, multi-granularity feature optimization, a lightweight detection head and an intelligent frame fusion technology, the problems of small target leak detection, background interference and multi-scale detection real-time performance in an infrared scene are solved, and the all-weather detection capability and the positioning precision are remarkably improved.

The invention provides an optical lens, which comprises seven lenses in total, and sequentially comprises a first lens with negative focal power, a second lens with negative focal power, a third lens with negative focal power, a fourth lens with negative focal power, a fifth lens with negative focal power and a sixth lens with negative focal power from an object side to an imaging surface, the object side surface of the second lens is a concave surface, and the image side surface of the second lens is a convex surface; the object side surface of the third lens is a concave surface, and the image side surface of the third lens is a convex surface; the object side surface of the fourth lens is a convex surface, and the image side surface of the fourth lens is a convex surface; the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a convex surface; the object side surface of the sixth lens is a concave surface, and the image side surface of the sixth lens is a concave surface; and the object side surface of the seventh lens is a convex surface, and the image side surface of the seventh lens is a concave surface. According to the optical lens provided by the invention, the imaging quality of the optical lens can be improved, the aberration can be reduced, the imaging quality of the optical lens can be improved, and the lens has one or more advantages of large target surface, large aperture, high imaging quality and the like.

The invention provides an optical lens, which comprises six lenses which sequentially comprise a first lens with negative focal power, a second lens with negative focal power, a third lens with positive focal power, a fourth lens with negative focal power, a fifth lens with negative focal power and a sixth lens with negative focal power from an object side to an image side along an optical axis, the second lens has negative focal power; the object side surface of the third lens is a concave surface, and the image side surface of the third lens is a convex surface; the object side surface and the image side surface of the fourth lens are convex surfaces; the fifth lens has negative focal power, and the image side surface of the fifth lens is a concave surface; and the object side surface of the sixth lens is a concave surface, and the image side surface of the sixth lens is a convex surface. According to the optical lens provided by the invention, the six lenses with specific focal power are adopted, and through specific surface shape matching and reasonable focal power distribution, the imaging quality of the optical lens can be improved, the aberration can be reduced, the imaging quality of the optical lens can be improved, and the lens has one or more advantages of large target surface, large aperture, high imaging quality and the like.

The invention provides an optical lens, which comprises seven lenses, and sequentially comprises a first lens with negative focal power, a second lens with negative focal power, a third lens with negative focal power, a fourth lens with negative focal power, a fifth lens with negative focal power and a sixth lens with negative focal power from an object side to an imaging surface, the object side surface of the second lens is a concave surface, and the image side surface of the second lens is a convex surface; the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface; the object side surface and the image side surface of the fourth lens are convex surfaces; the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a concave surface; the sixth lens has negative focal power, and the image side surface of the sixth lens is a concave surface; the seventh lens has positive focal power; the curvature radius R9 of the object side surface of the fifth lens and the curvature radius R10 of the image side surface of the fifth lens meet the formula:-0.85 lt; (R9-R10) / (R9 + R10) lt; and-0.4. According to the optical lens provided by the invention, through specific surface shape matching and reasonable focal power distribution, the lens has one or more advantages of a large field angle, a large target surface, a large aperture, high imaging quality and the like.

The embodiment of the invention provides an optical lens, a camera module and electronic equipment. The optical lens comprises a refraction and reflection lens, a lens group and an optical folding piece. Incident light is incident and refracted on the first transmission surface of the catadioptric lens, is reflected by the first reflection surface and the second reflection surface in sequence, and is refracted and emitted on the second transmission surface. After passing through the lens group, light rays are emitted after being reflected for multiple times in the light folding piece. The catadioptric lens can realize two times of light reflection and large aperture, the lens group can realize light gathering and adjustment, and the light folding piece can realize multiple times of light reflection. The optical lens has a long back focal length amplification optical path and a large equivalent focal length, can be used in combination with an image sensor with a large target surface, and realizes high-precision and high-resolution shooting. The folding light paths of the refraction and reflection lens and the light folding piece are utilized, so that the height and the size of the optical lens are small, and the shoulder height is low. The camera module comprises an image sensor, a focusing motor, an anti-shake motor and an optical lens. The electronic equipment comprises an equipment shell and a camera module.

The invention discloses an unmanned aerial vehicle target detection method based on an improved YOLOv5 algorithm, and belongs to the technical field of unmanned aerial vehicle target detection. According to the unmanned aerial vehicle target detection method, through the improvement of respectively calculating anchor frame parameters on feature maps with different scales, the detection capability of a model on targets with different scales is improved, and the detection efficiency is improved. And especially for a small target and a large target, more accurate positioning can be realized. And meanwhile, the generalization ability of the model in a complex scene is enhanced, and diversified target distribution can be better adapted. The calculation process of the anchor frame parameters is optimized, the workload of manually adjusting the anchor frame parameters is reduced, and the automation degree of the model is improved. Through multi-scale anchor frame parameter fusion, the precision of the detection frame is improved, and the overall performance of unmanned aerial vehicle target detection is further improved; and meanwhile, the FPN and PAN structures of the Neck part effectively fuse the characteristics of different scales, so that the target positioning and identification capability of the network is improved, and the detection precision is improved.

The invention provides an optical lens, which comprises nine lenses from an object side to an imaging surface along an optical axis: a first lens with negative focal power, a second lens with negative focal power, a third lens with negative focal power, a fourth lens with negative focal power, a fifth lens with negative focal power and a sixth lens with negative focal power, the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface; the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface; the image side surface of the fourth lens is a convex surface; the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a convex surface; the sixth lens has negative focal power, and the image side surface of the sixth lens is a concave surface; the seventh lens has positive focal power; the eighth lens has positive focal power; and the ninth lens has negative focal power. According to the optical lens provided by the invention, through specific surface shape matching and reasonable focal power distribution, the lens has one or more advantages of short focus, miniaturization, large field angle, large aperture, large target surface, low distortion and low sensitivity.

The utility model relates to an optical lens, which sequentially comprises a first lens, a second lens, a third lens and a fourth lens along the optical axis from the object side to the image side, a first lens with positive focal power, a second lens with negative focal power, a third lens with positive focal power, a fourth lens with positive focal power, a fifth lens with negative focal power, a sixth lens with positive focal power, a seventh lens with negative focal power and an eighth lens with negative focal power are included. The combined effective focal length of the first lens and the second lens is F12, and the Abbe number Vd1 of the first lens and the Abbe number Vd2 of the second lens meet the following relation: F12 / (Vd1-Vd2) is greater than or equal to 1 and less than or equal to 4.85. The optical lens at least has one of the characteristics of large field of view, miniaturization, large target surface, high resolution, low distortion and the like.

The present invention discloses a small surveillance lens with low distortion, large light transmission, large target surface and high resolution, which comprises, in order from the object side to the image side along the optical axis: a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, an aperture C, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9, wherein the second lens L2 and the third lens L3 are closely connected to form a first cemented lens group; the seventh lens L7 and the eighth lens L8 are closely connected to form a second cemented lens group; the first lens L1 to the fifth lens L5 form a front lens group; the sixth lens L6 to the ninth lens L9 form a rear lens group; the surveillance lens satisfies the following condition: 2.2≤FOV / CRA≤4.171, wherein FOV is the maximum field angle of the surveillance lens, and CRA is the chief ray angle of the optical system. The surveillance lens of the present invention has the performance of low distortion, large light transmission, large target surface, high resolution and miniaturization.

The invention provides an optical lens, which comprises six lenses which sequentially comprise a first lens with negative focal power, a second lens with negative focal power, a third lens with negative focal power, a fourth lens with negative focal power, a fifth lens with negative focal power and a sixth lens with negative focal power from an object side to an image side along an optical axis, the second lens has positive focal power; the third lens has positive focal power; the object side surface of the fourth lens is a concave surface, and the image side surface of the fourth lens is a convex surface; the fifth lens has negative focal power; the sixth lens has positive focal power, and the object side surface of the sixth lens is a convex surface; wherein the curvature radius R5 of the object side surface of the third lens and the curvature radius R6 of the image side surface of the third lens meet the following formula:-1lt; (R5-R6) / (R5 + R6) lt; and 0.9. According to the optical lens provided by the invention, the imaging quality of the optical lens can be improved, the aberration can be reduced, the imaging quality of the optical lens can be improved, and the lens has one or more advantages of miniaturization, large target surface, large aperture, large field angle, high imaging quality and the like.

The invention discloses a monitoring lens with low distortion, large target surface and high resolution, which sequentially comprises a first lens L1, a second lens L2, a third lens L3, a diaphragm C, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a ninth lens L9, a tenth lens L10 and an eleventh lens L11 from an object side to an image side along an optical axis, the second lens L2 and the third lens L3 are closely connected to form a first glued lens group; the fourth lens L4 and the fifth lens L5 are closely connected to form a second glued lens group; the first lens L1 to the third lens L3 form a front group lens; the fourth lens L4 to the eleventh lens L11 constitute a rear group lens. The monitoring lens has the advantages of low distortion, large target surface, high resolution and miniaturization.

The invention discloses a low-scattering support system design and optimization method for large-scale target external field measurement, the support system comprises a support and a low-scattering end cap, and the low-scattering end cap is connected with the top of the support; the method comprises the following steps: S1, constructing a bracket geometric model based on a low-scattering shape design formula, and evaluating the bearing capacity of a bracket; s2, performing electromagnetic solution on the bracket by using a non-conformal region decomposition area integral equation method, and optimizing a bracket geometric model; s3, constructing a low-scattering end cap based on a low-scattering shape design formula; and S4, placing the low-scattering end cap at the top of the bracket to form a low-scattering support system, and evaluating the composite backscattering of the low-scattering support system by using a non-conformal region decomposition area integral equation. According to the low-scattering supporting system, high bearing capacity and good low-scattering performance are both considered, and reliable supporting guarantee can be provided for external field measurement of a large target.

The invention provides an optical lens, which comprises seven lenses, and sequentially comprises a first lens with negative focal power, a second lens with negative focal power, a third lens with negative focal power, a fourth lens with negative focal power, a fifth lens with negative focal power and a sixth lens with negative focal power from an object side to an imaging surface, the object side surface of the second lens is a concave surface, and the image side surface of the second lens is a convex surface; the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface; the object side surface of the fourth lens is a convex surface, and the image side surface of the fourth lens is a convex surface; the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a convex surface; the object side surface of the sixth lens is a convex surface, and the image side surface of the sixth lens is a concave surface; and the object side surface of the seventh lens is a concave surface, and the image side surface of the seventh lens is a convex surface. According to the optical lens provided by the invention, through specific surface shape matching and reasonable focal power distribution, the lens has one or more advantages of a large field angle, a large target surface, a large aperture, high imaging quality and the like.

The invention discloses an automatic labeling method and system for small target detection data, a storage medium and electronic equipment, and the method comprises the steps: carrying out the target detection of a collected narrow-field camera image through a target detection model, obtaining a large target detection bounding box of the narrow-field image, carrying out the image registration of the wide-field camera image, and obtaining a large target detection bounding box of the narrow-field image; the method comprises the following steps: acquiring a homography matrix for converting a narrow-field-of-view image into a wide-field-of-view image, a registered narrow-field-of-view camera image and a wide-field-of-view small target bounding box before adjustment, and adjusting the position of the wide-field-of-view small target bounding box to obtain an accurately labeled small target bounding box. And training the target detection model by using the accurately labeled small target bounding box to obtain a trained small target detection model. According to the method, the labeling precision of the small target detection data is improved, and labeling missing is reduced.