A method for identifying sliding input trajectories

Abstract

The present invention relates to the technical field of sliding input, and in particular relates to a sliding input trajectory identification system and an identification method therefor. The method comprises: collecting a sliding input trajectory by a user, and generating a trajectory sequence; converting the trajectory sequence into a key bit sequence, and simultaneously recording coordinates of intersection between the trajectory and each key bit, and connecting line included angles of intersection points and adjacent key bit intersection points; according to the key bit sequence, searching a possible target word input by the user from a word bank, generating a word set, and scoring each word in the word set according to a scoring standard; ranking each word in the word set from high to low of the score level of each word, and deleting extra words; and displaying and outputting the ranked word set. According to the system and method disclosed by the present invention, the input trajectory of the user is not obviously limited, so that the user can select the target word in a relatively casual way. During a sliding process, the system can automatically carry out close keys matching without accurately sliding through each letter by the user.

Description

technical field [0001] The invention relates to the technical field of sliding input, in particular to a method for identifying a sliding input track. Background technique [0002] With the popularity of electronic devices, more and more technical solutions have been proposed to solve the soft keyboard-based input problem on the touch screen. Traditional input methods usually simulate a complete keyboard on the touch screen, allowing users to complete input by pressing virtual keys on the screen. However, due to the limitation of the screen size, the area occupied by the virtual keys is very limited, and accidental touches are prone to occur when the user inputs. At the same time, this input method requires the user to click each letter of the word accurately in turn, and the speed of user input is limited. Another input method developed later is to allow the user to use the finger on the touch screen to swipe the position of each letter of the word in turn. In this process...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that it limits the way the user can swipe. For example, for the word "right", the user can follow the shortest path, such as figure 1 As shown, underlined words may also, for some reason, follow figure 2 The way to draw words, if judged based on the similarity of the trajectory, the similarity of the second way is very low, so it cannot give the correct prediction

Secondly, if the user enters a long word, individual letters may be missed, which will cause the trajectory to be deformed and the prediction to fail

Finally, the comparison of trajectory similarity will consume a large amount of calculation, and its implementation method is also very complicated, requiring preprocessing operations such as sampling and coordinate changes

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