Handwritten digit recognition method and system

A technology of digital recognition and handwriting, applied in the field of pattern recognition, can solve the problems of low recognition rate, long time and high computational complexity of handwritten digital recognition

Active Publication Date: 2013-09-18
SUZHOU UNIV
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Problems solved by technology

[0003] However, handwritten digits are high-dimensional data. If it is directly recognized, it will not only take a long time, but also have a large computational complexity. Therefore, handwritten digits are often recognized after dimensionality reduction. Based on this, Saul et al. proposed a method based on linear Digital Recognition Method Based on Localized Linear Embedding
However, this method will use the least squar

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  • Handwritten digit recognition method and system

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Embodiment Construction

[0050] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0051] See figure 1 , figure 1 The flow chart of a method for recognizing handwritten numbers provided by an embodiment of this application includes:

[0052] Step S101: Obtain an image data set, the image data set including a training image data subset and a to-be-recognized image data subset;

[0053] In the embodiment of this application, the image data set includes two types of image data, which are training image data and image data t...

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Abstract

An embodiment of the invention discloses a handwritten digit recognition method and system. During dimensionality reduction of handwritten digits, all image data are represented linearly through K neighbors, weighting coefficients of all image data when the image data are represented linearly through the K neighbors are obtained through an orthogonal matching algorithm, besides, weighting coefficient matrixes are established to perform dimensionality reduction on training image data, and dimensionality reduction is performed on images to be recognized through weighting coefficient vectors and vector data of the K neighbors of the images after dimensionality reduction. According to experiments, by the aid of the handwritten digit recognition method, the recognition rate of handwritten digit recognition is improved.

Description

Technical field [0001] The invention relates to the field of pattern recognition, and more specifically, to a handwritten number recognition method and system. Background technique [0002] With the rapid development of computer technology and digital image processing technology, handwritten number recognition has been practically applied in e-commerce, automatic machine input and other occasions. [0003] However, handwritten digits are high-dimensional data. If they are directly recognized, it will not only take a long time, but also have a large computational complexity. Therefore, handwritten digits are often recognized after dimensionality reduction. Based on this, saul et al. Digital recognition method based on local linear embedding. However, this method will use the least squares method to solve the local linear representation coefficients of the data, which involves finding the inverse of the matrix. If the matrix is ​​a singular matrix and there is no inverse matrix for ...

Claims

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Application Information

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IPC IPC(8): G06K9/66
Inventor 张莉冷亦琴包兴杨季文李凡长
Owner SUZHOU UNIV
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