Provided is an image-based volume data carving method for rapidly carving
a specific area of dimensional volume data based on images. The method
includes the steps of: generating a mask image to be carved from an input
image; dividing a viewing transform matrix of the mask image into a shear
transform matrix and a warp transform matrix, and calculating a scale
factor from the shear transform matrix; modifying the mask image to be
parallel to an axis of the volume data; shearing a volume slice in such a
manner that the volume data can be parallel to viewing rays passing
through a volume, and scaling the size of the volume slice; and carving
part of the volume slice through an operation between the mask image and
each volume slice.