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Character recognition method and device and electronic device

A text recognition and text technology, applied in the field of image processing, can solve the problems of unsatisfactory text recognition results, loss of text and picture feature information, etc.

Active Publication Date: 2020-01-07
HANGZHOU HIKVISION DIGITAL TECH
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Problems solved by technology

[0004] Then, in the process of extracting the temporal feature sequence from the text image, the related technology loses some feature information of the text image, so that the recognition result of the subsequent text recognition is still not ideal.

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  • Character recognition method and device and electronic device
  • Character recognition method and device and electronic device
  • Character recognition method and device and electronic device

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Embodiment Construction

[0076] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, and to make the above-mentioned purposes, features and advantages of the embodiments of the present invention more obvious and understandable, the following describes the relevant technical solutions and the present invention in conjunction with the accompanying drawings The technical scheme in the embodiment is described in further detail.

[0077] In related technologies, in order to realize text recognition, usually after extracting the feature sequence of several vectors with the same specification in the text picture, the above feature sequence is focused to obtain the feature vector, and then the long short-term memory network (Long Short-Term Memory Network) is used to NetWorks, LSTMs) recognize the feature vector and output the string.

[0078] However, what the related technology extracts from the text image is actually a one-dim...

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Abstract

The invention provides a character recognition method and device, and an electronic device. The method comprises the steps of extracting a feature map from a target character picture; performing sliding window processing on the feature map to obtain a spatial-temporal feature sequence; and inputting the spatial-temporal feature sequence into a pre-trained spatial-temporal attention model, so thatthe spatial-temporal attention model performs encoding processing on the spatial-temporal feature sequence to obtain a spatial-temporal semantic code, and decodes the spatial-temporal semantic code tooutput recognized text information in the target text picture. According to the technical scheme, the character information contained in the target character picture can be recognized based on the information of the two dimensions of the target character picture, and the recognition rate is effectively increased.

Description

technical field [0001] The present application relates to the field of image processing, in particular to a method, device and electronic equipment for character recognition. Background technique [0002] In natural scenes, the recognition rate of text recognition will drop due to the complexity of natural scenes. For example, textures similar to text in the scene will interfere with text recognition, resulting in recognition errors. With the rapid development of deep learning technology, the attention model (Attention Model) has been applied to text recognition, improving the effect of text recognition in natural scenes. [0003] In related technologies, a temporal feature sequence is extracted from a text image (the text image may be a video frame obtained by monitoring a specified scene) through a convolutional neural network, and then the temporal feature sequence is decoded using a temporal attention model , so as to recognize the text in the text picture. [0004] T...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/34G06K9/62
CPCG06V30/153G06F18/24G06F18/214
Inventor 程战战钮毅罗兵华
Owner HANGZHOU HIKVISION DIGITAL TECH
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