Character recognition method and systemfor multi-frame picture sequence and vehicle identification code recognition method and system for multi-frame picture sequence

The embodiment of the invention discloses a character recognition method and system for a multi-frame picture sequence and a vehicle identification code recognition method and system for a multi-frame picture sequence. The character recognition method comprises the steps: S1, extracting picture features of each picture in multiple frames of pictures; s2, based on the picture features of each picture extracted in the step S1, determining the definition of each region of each picture to obtain the definition of each picture; s3, taking the definition distribution, determined in the step S2, of each picture as the weight of the corresponding region of the corresponding picture feature, and performing weighted summation on the picture feature of each picture in the multiple frames of pictures extracted in the step S1 to obtain a fused picture feature; and S4, on the basis of the fused picture features obtained in the step S3, determining character contents in the picture by using a character recognition algorithm