A method for downsampling fluoroscopic images and enhancing guidewire visibility during coronary angioplasty includes providing a first digitized image, filtering the image with one or more steerable filters of different angular orientations, assigning a weight W and orientation O for each pixel based...http://www.google.de/patents/US7970191?utm_source=gb-gplus-sharePatent US7970191 - System and method for simultaneously subsampling fluoroscopic images and enhancing guidewire visibility
