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52results about How to "Resolve indistinguishable" patented technology

Roadside vehicle parking behavior detection method based on high-order camera

InactiveCN112258668ASolve the problem of on-street parkingReduce dependenceImage enhancementTicket-issuing apparatusParking areaVehicle behavior
The invention discloses a roadside vehicle parking behavior detection method based on a high-order camera, and belongs to the field of roadside vehicle parking recognition. The method solves the problems of imprecise vehicle detection and high error correction cost of a parking space-dominated parking condition judgment method at present, and comprises the following steps: firstly, defining a parking space frame in a fixed camera picture, wherein the parking space frame represents a parking area; detecting and judging whether a moving object exists or not for each frame of image in the subsequent images; judging whether a moving frame and the parking space frame are overlapped or not, judging whether the moving object is a vehicle or not if the moving frame and the parking space frame areoverlapped, and acquiring a real outline of the moving object if the moving object is the vehicle, recording a moving track of the moving object by utilizing a tracker, and judging a vehicle behaviorby utilizing the overlap ratio of the real outline and the parking space frame and the moving track; otherwise, ignoring the frame of image; according to the method, the roadside vehicle parking condition can be judged more precisely, and the error correction cost is low.
Owner:REDNOVA INNOVATIONS INC

X-ray light field imaging and calibrating method based on pinhole array

The invention discloses an X-ray light field imaging and calibrating method based on a pinhole array. The X-ray light field imaging and calibrating method based on the pinhole array comprises the steps that (1) An X-ray light field imaging model based on the pinhole array is established and comprises an X-ray light source array, the pinhole array and an X-ray image sensor; (2) a linear exposure mapping image is established so that exposure of images of an X-ray light field can be normalized; (3) the pinhole center of each X-ray light field image is calibrated so that the central position of each pinhole image is extracted; (4) according to the center, obtained in the step (3), of each pinhole image, each X-ray light source image is extracted; (5) according to each X-ray light source image extracted in the step (4), the pixels at the same position in the pinhole images are extracted and reorganized into a frame of X-ray light source image; (6) the extracted X-ray light source images are converted into X-ray light source images which are orthogonally arranged. According to the X-ray light field imaging and calibrating method based on the pinhole array, the light field imaging principle of visible light is applied to X-ray imaging, and the requirement for the imaging quality of the X-ray images during clinical diagnosis and treatment is met.
Owner:ZHEJIANG GONGSHANG UNIVERSITY

Ultrasonic detection method for bonding quality

The invention provides an ultrasonic detection method for bonding quality. The ultrasonic detection method comprises: 1, before the front edge of a composite material blade is not bonded to a metal overlap, detecting the front edge position by using an ultrasonic water spraying penetration C scanning method, and eliminating the composite material blade with the defect at the front edge position; 2, after the composite material blade with the defect-free front edge is bonded to a metal overlap, detecting the blade overlapping position by using the ultrasonic water spraying penetration C scanning method, determining the horizontal position of the debonding defect, and marking; and 3, respectively detecting the front surface and the back surface of the marking position by using a high-resolution retarding block probe, and through the height of the reflected ultrasonic wave pulse formed by the composite material/metal/air interface wave of the surface, determining the surface at which thedebonding defect is generated. With the method of the present invention, the debonding defect with the diameter of not more than 5 mm can be rapidly and accurately detected, the surface at which the debonding is generated can be accurately determined, and the design and rework requirements of the product can be met.
Owner:AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH

Machine learning multispectral remote sensing image crop straw out-of-field extraction method and system

PendingCN114359746ASolve the errorSupervise the progress of leaving the fieldScene recognitionSoil scienceMultispectral image
The invention discloses a multispectral remote sensing image crop straw off-field extraction method and system based on machine learning, and solves the problems that personal errors and measurement errors exist in the off-field area and progress of an existing straw off-field supervision mode, and accurate management and control cannot be realized on non-off-field area positioning. Comprising the following steps: S1, acquiring multispectral image data of a crop growth period, sketching and establishing a polygon sample set according to crop spectral information, establishing a crop classification model, and predicting the established crop classification model to obtain a crop distribution result; s2, acquiring multispectral image data after a crop harvest period, sketching polygonal samples of corresponding categories, and performing sampling treatment to obtain a polygonal sample set of an out-of-field plot; and S3, dividing the polygonal sample set of the out-of-field plot by utilizing five-fold division, training the obtained five groups of training sets-verification sets to obtain five base models, predicting the image data by using the base models, and determining the out-of-field plot through probability mean value fusion of prediction results.
Owner:CHANGGUANG SATELLITE TECH CO LTD

Cleaning pool structure with oil-water separation function

The invention discloses a cleaning pool structure with an oil-water separation function. A rectangular bracket is arranged to support the cleaning pool; a drawer type funnel is mounted at the bottom end of the cleaning pool to filter solid garbage; an oil stain separation tank is fixedly arranged at the bottom end of the rectangular bracket; an oil outlet is formed in one side of the top end of the oil stain separation tank and communicates with an oil storage bottle; a blower is mounted on the other side of the top of the oil-stain separation tank; an air outlet of the blower is sleeved witha duckbilled air outlet; the duckbilled air outlet is attached to the top surface of the oil stain separation tank and blows air over against the oil outlet; a drainage valve is arranged at the bottomend of the oil stain separation tank; a liquid substance flows into the oil stain separation tank until a water surface reaches the oil outlet; the air outlet of the blower flattens airflow through the duckbilled air outlet so that grease on the surface of mixed liquid can be evenly blown, the grease flows into the oil storage bottle to be stored along the oil outlet under the action of blowing force, oil-water separation and oil storage are achieved, and good practical value is achieved.
Owner:许春燕

Micro-nano structure capable of distinguishing left-handed polarized light and right-handed polarized light

The invention relates to the technical field of micro-nano optics, and particularly relates to a micro-nano structure capable of distinguishing left-handed polarized light and right-handed polarized light. By using a combination of a base layer, a chiral unit, and a graphene layer, the chiral unit is embedded in the base layer, so that the chiral unit is in contact with the graphene layer and thebase layer. By using the strong light absorption capability of the graphene layer, incident light is maximally absorbed to the chiral unit, the reflection of incident light is reduced, and the servicelife of the chiral unit is prevent from the decrease because of the perpendicular incidence of the incident light. Different forms of electric dipoles and magnetic dipoles is formed on the chiral unit after the chiral unit absorbed incident light through the graphene layer, thus, the left-handed polarized light and right-handed polarized light in the incident light are differently absorbed, so that the distinguishing of the left-handed polarized light and the right-handed polarized light is achieved. By analyzing the absorption spectrogram of the micro-nano structure of the embodiment of theapplication, the kinds of the left-handed polarized light and the right-handed polarized light in the incident light can be distinguished.
Owner:中山科立特光电科技有限公司

Pelvic bone tumor automatic segmentation and three-dimensional reconstruction method based on multi-modal image

PendingCN114882051AReduce segmentation errorSimplify segmentation tasksImage enhancementImage analysisComputer visionNuclear medicine
The invention discloses an automatic segmentation and three-dimensional reconstruction method for a pelvic bone tumor based on a multi-modal image, and the method achieves the automatic segmentation of an ilium, a sacrum and a femur in a pelvic CT image of a patient through a U-Net network model, and has the advantages that the segmentation error of bone tissues is greatly reduced; secondly, registering the MR image and the CT image by adopting a mutual information method, so that the information of the MR image and the CT image can be comprehensively utilized, and the segmentation task is simplified; and then clustering is carried out on the MR images by adopting an improved K-Means method to obtain candidate regions of tumors, and the method has the advantages that tumor regions can be accurately segmented for MR images with different gray features, so that the method has certain robustness; the method comprises the following steps: screening tumor candidate region images by using a bone region and continuity detection, and effectively solving the problem that a tumor region and a non-tumor region with similar characteristics cannot be distinguished by using medical priori knowledge in the step; in addition, according to the method, the tumor sequence is filled, so that the tumor is smoother during three-dimensional reconstruction and is closer to the real tumor form.
Owner:DALIAN UNIV OF TECH

LAMP (loop-mediated isothermal amplification) multi-dimensional visual detection color indicator and RNA (ribonucleic acid)/DNA (deoxyribonucleic acid) detection premix solution

The invention discloses an LAMP (loop-mediated isothermal amplification) multi-dimensional visual detection color indicator. The LAMP multi-dimensional visual detection color indicator is characterized by comprising phenol red, chrome black T and Eva Green. The invention also discloses an LAMP multi-dimensional visual RNA/DNA (Ribonucleic Acid/Deoxyribose Nucleic Acid) detection premix solution. According to the invention, phenol red is used as a pH indicator, chrome black T is used as a metal ion indicator, Eva Green is used as a fluorescent indicator, and phenol red, chrome black T and Eva Green cooperate with each other in a certain concentration range. According to the method, the low copy number can be detected, the false positive rate is reduced, and the problem that weak positives caused by primer design or too low template concentration are difficult to distinguish during photographing retention or visual distinguishing can be perfectly solved. The color indicator disclosed by the invention has the characteristics of high resolution, high sensitivity, low false positive rate and multi-dimensional verification, and has the effect of judging whether a sample is positive or negative only through naked eyes or 365nm excitation.
Owner:YEASEN BIOTECHNOLOGY (SHANGHAI) CO LTD

Aoi retractable board machine and retractable board method with sticky dust, flipping and coding functions

The present invention relates to an AOI retractable board machine and a board retractable method with the functions of sticking dust, flipping boards and coding. Four quadrants, the first quadrant and the fourth quadrant are the detection position, the second quadrant and the third quadrant are the feeding level, there is a discharge level between the detection position of the first quadrant and the feeding level of the second quadrant, and the fourth quadrant A discharge position is provided between the detection position of the third quadrant and the feeding position of the third quadrant, and a sticky dust coding mechanism is set between the two feeding positions. The unpowered roller group located on the side of the automatic transmission roller group away from the sticky dust coding mechanism. The detection position includes the detection table and the turnover mechanism located on the side of the detection desktop away from the manipulator. The turnover mechanism includes a rotating shaft and is driven by the rotating shaft. The flip-side suction cup assembly, one retractable trigger can be connected to two AOI equipment, with high work efficiency; it can accurately distinguish problem boards.
Owner:无锡惟勤智能装备有限公司
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