Abstract
We try to get the handwritten sequential coordinates of the pen movement by using the CCD camera that observes the writing pen. We call this the video tablet. At first, the sequential images are obtained through the CCD camera. Next, the system estimates the coordinate of the handwritten position by using the color marker in each image. In case of extraction of color marker, we use the uniform color space. We can get the sequential coordinates of the written locus in case of the suitable color marker.