Abstract
This paper describes user-friendly man-machine interface for drawing pictures, as well as the principles and picture data construction for direct input by hand. Color shaded pictures can be drawn using the CARP rendering system and the drawing time for completing pictures is reduced. Drawing by hand using man-machine interface is considered. Moreover drawing procedures and input methods are classified and personal drawing methods are summarized. It is most important to clarify line drawing input and modification method by handwriting. We used a characteristic point method for recognizing line drawing and realized to make drawing data. This input method was added to the CARP system and drawing experiments were done. As a result, designers can take advantage of greater flexibility in input methods and they can draw pictures more precisely by computer than by conventional method.
