Patents
Literature
2 results about "Letter recognition" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
A recognition letter, or letter of recognition, can be written for many different situations, both business and personal. They are very similar in purpose to "commendation letters" but the term is used more often in the public and not-for-profit sectors. Often a recognition letter will lead to a formal commendation letter.
An English letter recognition method, device and medium based on machine vision
ActiveCN121838183BReduce interferenceImprove recognition accuracyImage enhancementCharacter and pattern recognitionPattern recognitionMachine vision
The application discloses an English letter recognition method and device based on machine vision and a medium, relates to the technical field of image recognition, and comprises the following steps: collecting an original image, performing grayscale and denoising processing to obtain a denoised grayscale image, correcting the denoised grayscale image and performing binaryzation processing, delimiting a connected domain, and obtaining a binary letter image; performing iterative pruning on the binary letter image, setting nodes and edges, summarizing a skeleton graph structure, calculating the path length of the edges and the curvature and bifurcation degree of the nodes, and labeling the skeleton graph structure to obtain a skeleton graph structure with topological filtering labels; setting a topological complex according to the skeleton graph structure with topological filtering labels, constructing the input of a graph neural network model, and completing the training of the graph neural network model; and inputting a node feature matrix into the graph neural network model to obtain a letter recognition result. Through the training of the graph neural network model, the recognition accuracy of complex, careless or deformed letters is improved.
Owner:SHENZHEN SUNCHIP TECH CO LTD
A handwritten letter recognition method based on piezoresistive signal detection
PendingCN122087624AImprove anti-interference abilityovercome limitationsBiological modelsKnowledge based modelsFeature vectorText recognition
This invention belongs to the field of character recognition technology and provides a handwritten letter recognition method based on piezoresistive signal detection, including the following steps: collecting the temporal piezoresistive signal during the letter writing process as raw data; preprocessing the raw data to obtain training data; constructing a recognition model, inputting the training data into the recognition model to extract temporal feature vectors, and performing classification training; using the trained recognition model for forward inference to confirm the letter category; this invention accurately captures changes in writing force and temporal logic based on piezoresistive electrical signals, significantly improving the accuracy of handwritten letter recognition.
Owner:JILIN UNIVERSITY