Tencent Technology (Shenzhen) Company Limited

Tencent Technology Company Limited

Longsha Zhou

Hongfa Wang

Hui Song

Sheng Han

A method and a device for verifying a recognition result in character recognition are provided. The device constructs a hidden Markov chain for a character string to be recognized, using recognition result output of a character recognition process. The recognition result includes candidate characters of each character in the character string. The device solves for an optimal path forming a candidate character string according to the hidden Markov chain and a pre-trained state transition matrix. The device recognizes non-Chinese characters in the character string according to state transition probabilities in the optimal path. The device verifies the recognition result according to the non-Chinese characters. The device feeds back a verification result to the character recognition process, wherein the character recognition process applied to the character string to be recognized is modified by the verification result.

Method and device for verifying recognition result in character recognition

A text image processing method and a text image processing apparatus are provided. In some embodiments, a text image processing method includes: preprocessing a text image to obtain a binary image, where the binary image includes multiple connected regions; acquiring a convex hull corresponding to each of the connected regions with a convex hull algorithm; acquiring a character region circumscribing the convex hull; performing character segmentation on the acquired character region to obtain multiple character blocks; and merging the character blocks based on heights of the character blocks to obtain word blocks of the text image.

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Shenzhen, China

Longsha Zhou