Abstract
A user controlled texture synthesis technique reproduces the characteristic color pattern of a sample image on an output image in accordance with a paint image given by a user. This technique does not specially treat the contour of an object, that is, the boundary between an object and its background on the sample image. Thus, when a user wants to use only the pixels of the object for no background or other backgrounds in the synthesis, it is difficult to reproduce the characteristic contour of the object on an output image in accordance with the contour of a paint region roughly painted by the user. Therefore, a boundary expansion texture synthesis technique was proposed to reproduce the characteristic object contour of a sample image by appropriately expanding the contour of a paint region based on the user controlled texture synthesis. In this paper, we propose a transparent boundary expansion texture synthesis technique based on the previous technique. Our new technique reproduces the finer object contour as well as the characteristic color pattern of a sample image by using opacity values, alphas, given to pixels of sample and paint images.
