1. A method for recognizing information, comprising: locating, using one or more processors, a card zone for each frame within a card image frame sequence comprising a plurality of frames; locating, using the one or more processors, an information zone within each card zone; dividing, using the one or more processors, each information zone into at least one character zone; de-blurring, using the one or more processors, a character zone corresponding to a same region across all the frames in the card image frame sequence, wherein the de-blurring of the character zone comprises: for character zones corresponding to a same region across all the frames in the image frame sequence, calculating a clarity of a first character zone, comprising: obtaining an intensity value of each pixel in the first character zone based on horizontal and vertical gradient features of the each pixel within the first character zone, comprising: multiplying a first grayscale value of a first pixel in the first character zone with a corresponding first element of a matrix to obtain a first intensity value of the first pixel; multiplying a second grayscale value of a second pixel in the first character zone with a corresponding second element of the matrix to obtain a second intensity value of the second pixel, the first element being different from the second element; determining whether the each pixel is located at an edge of the first character zone; and in the event that the each pixel is located at the edge of the first character zone, adding a supplemental pixel to the edge of the first character zone, the supplemental pixel having a grayscale value of zero; and determining the clarity of the first character zone based on the first and second intensity values in the first character zone; selecting as a candidate character zone, the candidate character zone having a highest clarity among the corresponding character zones; and recognizing, using the one or more processors, character string information based on the de-blurred character zone.