Identification method and identification device of handwritten mathematical formula
A technology of mathematical formulas and recognition methods, applied in the field of handwriting input methods, can solve the problems of lack of convenience and speed, user troubles, etc., and achieve the effect of reducing the number of inputs and increasing the input speed
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example 1
[0094] Figure 4 It is a schematic diagram of the input handwriting of the mathematical formula displayed in the writing area in the second embodiment of the method for recognizing handwritten mathematical formula provided by the present invention. The mathematical formula the user wants to enter is a 1 1 , in step 201, the device acquires the input handwriting of a handwritten mathematical formula, and divides the input handwriting into several character blocks. Such as Figure 4 As shown, the input handwriting is divided into five character blocks, and the character blocks are represented by boxes in the figure.
[0095] In step 202, the recognition device recognizes the characters of each character block, and then splices the recognition candidate results of each character block to find out several combinations with higher scores as the recognition candidate results of the entire mathematical formula, and Display it in the candidate display area, assuming that the recogn...
example 2
[0123] This example also targets Figure 4 The input handwriting shown. The mathematical formula the user wants to enter is a 1 1 , in step 301, the input handwriting is divided into five character blocks.
[0124] In step 302, it is assumed that one of the recognition candidate results of the mathematical formula displayed in the candidate display area is: a11 .
[0125] In step 303, the user finds that the relative position recognition error of the characters "a" and "1" in the recognition candidate results, the user can select the character block 11 (i.e. the second character block of the present embodiment) and the character block 12 ( That is, the third character block in this embodiment) slides down to the right, and this gesture indicates that the character "1" should be the subscript of "a". The starting point of this operation is in character block 11 and the end point is in character block 12 . The recognition device acquires the starting point coordinates of the...
example 3
[0131] Figure 7 It is a schematic diagram of the input handwriting of the mathematical formula displayed in the writing area in the third embodiment of the handwritten mathematical formula recognition method provided by the present invention. The mathematical formula that the user wants to enter is In step 301, after the entire mathematical formula is written, the recognition device performs character block segmentation. Such as Figure 7 As shown, the input handwriting is divided into six character blocks, and the character blocks are represented by boxes in the figure. Since the root sign is presented as an outline number, this step divides the root sign and its contained content into a whole, and then separates the characters inside it one by one.
[0132] In step 302, the recognition device recognizes the characters of each character block, and then splices the recognition candidate results of each character block to find out several combinations with higher scores as...
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