Showing papers by "Masaki Nakagawa published in 1993"

Lazy recognition as a principle of pen interfaces

Abstract: The pen is suitable for creative work since one can express almost everything and is not bothered by the method to use. Experimental pen-based systems and products have not exploited the ‘aummted’ nature of handwriting. They try to recognize handwriting immediately after each pattern is written with the result of frequent misrecognition and thus inte.nupt user’s thinking. This paper presents lazy nxognition scheme which delays the display of raognition until needed. One’s thought is better developed by working with one’s handwriting. Lazy recognition also provide easier structure to process handwritten patterns. Automatic segmentation of Chamctersand diagmms is described.

On-line text/drawings segmentation of handwritten patterns

Abstract: A simple and fast segmentation of text and line drawings which exploits the characteristics of online handwritten patterns is presented. Many attempts have been made on text/figure segmentation in offline research, but none in online. In online environment, mode selection is easily employed to input characters and drawings commongly. But it disturbs the user's thought. The authors propose online but delayed processing of handwritten patterns after they are written. Because the input patterns consists of characters and line drawings, there is a need to discriminate input patterns into characters and line drawings. An analysis of 17 handwritten patterns shows that the logarithmic distribution of character stroke length and that of the length of the longer side of rectangles circumscribing character strokes have similarity to the normal distribution. This finding, the contact frequency of character strokes and drawing strokes, and stroke input order have been used to perform the segmentation. In the testing of 18 patterns, 88% of all strokes were correctly judged. >

Principles of pen interface design for creative work

Abstract: Basic design concepts are presented for a creative writing environment with pen and display integrated tablet to promote human thinking rather than to bother a user with the chores of input. The pen is suitable for creative work since one can express almost everything and is not bothered by the method of use. Experimental pen-based systems and products have not exploited the automated nature of handwriting. They try to recognized handwriting immediately after each pattern is written with the result of frequent misrecognition, and thus they interrupt the user's thinking. A structure of representation to handle the ambiguity of handwritten patterns is presented, as well as a lazy recognition scheme which delays the display of recognition until needed. Also presented is a prototype for text preparation, automatic segmentation of text and diagrams and mathematical formula recognition. They are all consolidated with lazy recognition. >