1. A method for segmentation-based recognizing handwritten touching numeral strings, the method comprising the steps of: a) receiving a handwritten numeral string extracted from a pattern document; b) smoothing a curved numeral image of the handwritten numeral string, and searching connecting components in the numeral image; c) determining whether or not the numeral string is a touching numeral string; d) if it is determined that the numeral string is the touching numeral string, searching a contour of the touching numeral string image; e) searching candidate segmentation points in the contour, and segmenting sub-images; f) computing a segmentation confidence value on each segmented sub-image by use of a segmentation error function to select the sub-image with the highest segmentation confidence value as a segmented numeral image in the touching numeral string image; g) if it is determined in the step c that the numeral string is not the touching numeral string, extracting a feature to recognize the segmented numeral image; h) segmenting the numeral image selected from the touching numeral string in the highest segmenting confidence value; and i) obtaining remaining numeral string image.