| 摘要 |
There is provided an image processing apparatus for approximating the contour of a character or the like by a set of function curves or straight lines, thereby compressing the image data by contour decision information. This apparatus comprises: a designating section to designate a curve portion of a contour line; a section to obtain slopes and coordinates of the curve portion at the initial and terminative points thereof or of each interval which is obtained by dividing the curve portion designated by the designating section; a section to determine a dividing point in the interval or on the curve portion; a section to obtain the coordinates of the dividing point; an approximating section to approximate the curve portion on the basis of the slopes of the curve portion and on the basis of the coordinates of the initial and terminative points and the dividing point; and a coder to encode the codes corresponding to the coordinates of a plurality of special points on the approximated curve into the coded data of the curve or interval. The approximating section performs the curve approximation by using a Bezier cubic curve andstores as the contour data of four special points on the Bezier cubic curve. Thus, the contour of image data can be approximated at a highspeed and the image d ata can be easily compressed .
|
