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-- Alfred North Whitehead

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S. C. Hsu

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Publications by S. C. Hsu (bibliography)

1993

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Hsu, S. C., Lee, I. H. H. and Wiseman, N. E. (1993): Skeletal Strokes. In: Hudson, Scott E., Pausch, Randy, Zanden, Brad Vander and Foley, James D. (eds.) Proceedings of the 6th annual ACM symposium on User interface software and technology 1993, Atlanta, Georgia, United States. pp. 197-206.

“A skeletal stroke is a kind of general brush stroke for changing the shape of pictures as if by bending, shearing, twisting, while conservating the aspect ratio of selected features on the picture. It is neither a simple warping nor texture mapping technique, but a new method for controlling the deformation of a picture. A deformation model of a coordinate system has been proposed taking into account cases of discontinuous or extreme bending. Complicated pictures can be built up hierarchically by defining higher order strokes and recursive strokes. It is therefore a powerful general drawing tool and extended image transformation instrument. The use of skeletal strokes as a replacement for affine transformations in IFS coding has been explored. A novel general anchoring mechanism is proposed, which allows arbitrary control of any point in the picture. This control flexibility is particularly desirable in computer animation and digital typography. As a result, virtual '2-D models' of cartoon characters as well as pseudo 3-D objects can be created and manipulated with ease.”

1991

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Hsu, S. C. (1991): A Flexible Chinese Character Input Scheme. In: Rhyne, James R. (ed.) Proceedings of the 4th annual ACM symposium on User interface software and technology Hilton Head, South Carolina, United States, 1991, Hilton Head, South Carolina, United States. pp. 195-200.

“A very flexible and easy-to-use scheme which possesses unique advantages over existing systems is presented in this article. The scheme is based on the partitioning of a character into parts. A character is inputted by specifying the sequence of character parts descriptions, which is then matched against the standard sequences of the characters the character set. A character part is either described with a unique key or its stroke count. The matching algorithm allows the characters to be partitioned flexibly and inputted in many different ways. An automatic binding mechanism offers very high adaptability to the input style of the user. The user need not remember all the key bindings before he can input Chinese and the scheme is also capable of tolerating many variations in character style and/or errors.”

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