Image alignment algorithms for ultrasound images with contrast
Amy Christina Gieffers · 1998
This thesis examines methods for aligning ultrasound images with contrast varia-tions between the images. Although image alignment, or registration, is somewhat established in lower-noise modalities, registration research in the "noisier " ultrasound domain is less established. The most notable characteristics which make the regis-tration process difficult for contrast ultrasound images are: low image quality, signal attenuation and shadowing, sporadic motion, and image intensity variations. A 2D block matching method for alignment is implemented and four objective