12 results about "Multi code" patented technology

The invention discloses a dynamic object pose estimation method and system based on multi-ArUco code confidence weighting, and provides a method which does not need a fixed calibration layout, supports random placement of multiple codes, dynamically solves a geometrical relationship between an object and a calibration code, establishes a double confidence mechanism by combining image recognition quality and geometrical consistency, and can estimate the pose of a dynamic object based on multi-ArUco code confidence weighting. And by utilizing multi-frame data fusion, the dynamic target pose can be stably estimated with high precision in complex scenes such as dynamic, inclination, shielding and the like, and accurate positioning in a dynamic environment is realized. The problems that in a dynamic environment, the ArUco code is frequently shielded, the pose is unstable, and the relative relation between the ArUco code and an object is difficult to calibrate are solved.

The embodiment of the invention provides a positioning method and device based on multiple DM codes, an autonomous mobile device and a storage medium, and relates to the technical field of mobile robots. The method comprises the steps of obtaining a first layer image, a second layer image and a third layer image obtained by performing continuous downsampling on a to-be-detected image; determining an actual position and an actual angle of at least one DM code in the to-be-detected image according to the first layer image, the second layer image and the third layer image; based on the actual position and the actual angle of the at least one DM code, determining the actual position and the actual angle of a graphic identification code comprising the at least one DM code; and positioning is carried out based on the actual position and the actual angle of the graphic identification code, so that the navigation positioning efficiency, accuracy and robustness based on the multi-DM code are improved.

Polycode (100) for the visible wavelength range, comprising: a carrier (3); a first 2D code (1); at least a second 2D code (2); where the 2D codes (1, 2) are two-dimensional nxm matrix codes, where n is the number of rows and m is the number of columns for the matrix, wherein the second 2D code (2) has nxm fields (21, 22, 23, 24) arranged directly on the carrier (3), wherein the first 2D code (1) has nxm fields (11, 12, 13, 14) arranged overlapping on the fields (21, 22, 23, 24) of the second 2D code (2), where n ≥ 1 and m ≥ 2, wherein stacks (S1, S2, S3, S4) are formed by stacking the fields (11, 12, 13, 14) and the fields (21, 22, 23, 24) are formed on a first surface (30) of the carrier (3), wherein the fields (11, 12, 13, 14; 21, 22, 23, 24) of the first 2D code (1) and the second 2D code (2) are colored, transparent fields having at least two different colors, wherein the carrier (3) is a transparent, colorless or a transparent, colored or opaque substrate, wherein boundary layers (G1, G2, G3, G4) are formed between the fields (11, 12, 13, 14) of the first 2D code (1) and the fields (21, 22, 23, 24) of the second 2D code (2), characterized in that the boundary layers (G1, G2, G3, G4) are inhomogeneous.

A colored lighting apparatus with mixed multi-codes triggered by power line edge signals, including a power line edge signal generator for generating address signals and light control signals and loading them onto the power line; multiple LED modules, each including a multi-color LED group and an LED driver that drives the multi-color LED group based on the address signals and light control signals loaded from the power line; multiple LED modules including two or more LED modules, and multiple LED modules having two or more LED driver address codes, with the LED modules randomly mixed and arranged according to the LED driver address codes.

The application discloses a kind of multi-code decoding method and system based on gradient algorithm, wherein the multi-code decoding method involved, comprising: S1. obtaining the image corresponding to multiple bar codes, the image obtained is carried out gray scale and contrast enhancement processing, obtain the gray scale image of multiple bar codes;S2. calculate the gradient of gray scale image in preset direction, obtain gradient graph, calculate the number of non-black pixels of gradient graph, obtain the gradient graph with the maximum number of non-black pixels;S3. the gradient graph is carried out binaryzation processing, the white area obtained is the position of bar code, the white area is expanded to rectangle, obtain bar code area position frame;S4. traverse the pixel in bar code area position frame, obtain bar code, from the middle part of each bar code start sampling, obtain multiple sampling lines in different directions of each bar code, and calculate the gradient of each sampling line, obtain the sampling line with the maximum gradient;S5. the bar code pixel in the sampling line with the maximum gradient is decoded, and the decoding result is obtained.

The approaches proposed here concern error processing, where K data bits are extended by m additional bits, so that the combination of data bits and additional bits is a codeword of a multicode in the error-free case.

The invention relates to a storage and calculation integrated device-based multi-code universal decoding method, system and equipment and a medium. The method comprises the following steps of: representing common characteristics of different types of decoding tasks by using a probability graph model; obtaining an initial log-likelihood ratio of each variable node in the probability graph model corresponding to different types of to-be-decoded data; constructing a universal storage and calculation integrated device array containing different types of decoding arrays, and configuring the resistance state of each cross node in the corresponding decoding array according to the codeword characteristics of different types of to-be-decoded data; inputting the initial log-likelihood ratios of different types of to-be-decoded data into corresponding rows of the general storage and calculation integrated device array, performing iterative calculation through corresponding columns of the general storage and calculation integrated device array based on a message passing process between a variable node and a check node, and when the output of the corresponding columns meets a termination condition, decoding the to-be-decoded data according to the final condition. And outputting decoding results of the different types of to-be-decoded data. The method can be widely applied to the technical field of decoding.

The invention relates to a high-precision angle measurement method of a multi-code-channel vernier code and a Hall chip, and belongs to the technical field of angle measurement. According to the method, a multi-code-channel magnetic grid disc comprising a main code channel and a vernier code channel of which magnetic pole pairs are prime numbers is adopted, magnetic fields of the code channels are detected through corresponding Hall sensors, and orthogonal sine and cosine signals are output. After the signals are subjected to conditioning and analog-to-digital conversion, a coarse angle and a period index are calculated by utilizing the main code channel signals, a fine angle is calculated by combining the phase difference of the main code channel signals and the vernier code channel signals, and finally a high-precision absolute angle value is obtained through combination. And an index code channel is optionally added to realize zero calibration and error elimination, and differential amplification, electromagnetic shielding and dynamic compensation technologies are adopted to enhance the anti-interference capability and the measurement stability. The device has the advantages of high resolution, high environmental adaptability and compact structure, and is suitable for high-precision angle measurement scenes such as industrial automation and robots.

The application relates to a multi-code mutual recognition-oriented cross-domain routing system and method, which realizes efficient compatibility and data sharing of multi-codes in different cities and different fields; through an original two-level routing data platform, multi-code cross-domain matching in different cities and different fields is realized; through a new code registration module, a standardized city service code input interface is provided, dynamic expansion of the system is realized, efficient code reading and checking are realized through a city service code reading module, and corresponding city services are provided for the cross-domain routing city code through a back-end business service module. Compared with traditional point-to-point local mutual recognition, the application has better practicability and matching efficiency in view of the current multi-code situation of various codes and isolated business systems. Based on the original two-level routing data platform and routing table design, the accuracy, safety and high expansibility of multi-code mutual recognition are ensured.

The application provides an IGBT module production tracing method based on multi-code level binding, a multi-code level coding system covering work order level, batch level, raw material level, material box level, tray level, each process level, semi-finished product level, module level and packaging level is established, a code scanning inspection unit linked with a database is arranged at each process section node to realize automatic code scanning and real-time binding, a Data Matrix code engraved by a fiber laser is selected according to a high-temperature special environment such as welding, and an intelligent binding algorithm is used to establish a full-chain binding relationship between a single module and various raw materials, multiple modules and a tray, multiple trays and a material box and process parameters. Based on the database, the flow information and key process parameters of the IGBT module from the raw material to the packaging into the warehouse of the whole process can be completely stored and traced, the problem of accurate positioning of failure is solved, and the requirement of the whole cycle tracing for the high-reliability application scene is met.

The application relates to a multi-code general decoding method, system, device and medium based on a memory-computing integrated device, which comprises the following steps: representing the common features of different types of decoding tasks in a probabilistic graph model; obtaining the initial log-likelihood ratio of each variable node in the probabilistic graph model corresponding to different types of to-be-decoded data; constructing a general memory-computing integrated device array containing different types of decoding arrays, and respectively configuring the blocking state of each cross node in the corresponding decoding array according to the code word features of different types of to-be-decoded data; inputting the initial log-likelihood ratio of different types of to-be-decoded data into the corresponding row of the general memory-computing integrated device array, performing iterative calculation through the corresponding column of the general memory-computing integrated device array based on the message passing process between the variable nodes and the check nodes, and outputting the decoding result of different types of to-be-decoded data when the corresponding column output meets the termination condition. The application can be widely applied in the field of decoding technology.

The utility model belongs to the field of bar code reading, and discloses a multi-code high-speed scanner capable of scanning codes in batches. Comprising a base, a tray, a column, a cantilever and a reading module. Wherein the bottom end of the stand column is arranged on the base, the near end of the cantilever is arranged at the top end of the stand column, the far end of the cantilever extends outwards in the horizontal direction, the tray extends from the base to the horizontal direction of the cantilever, and the center of the tray is located below the far end of the cantilever; a reading module is arranged at the far end of the cantilever, and a reading window faces downwards and faces the tray. The base comprises an adapter plate, a loudspeaker module, a power switch, a power interface, a communication interface and a photoelectric trigger switch. And the reading module corresponds to the photoelectric trigger switch and executes bar code batch scanning. The device is simple in structure, low in cost and convenient to assemble and use.