Computational imaging with lasers, ultrahigh-speed cameras, commodity graphics cards, and state-of-the-art statistical filtering algorithms, emerges as a competitive alternative to dye angiographies. This class of non-invasive microangiography techniques can be advantageously applied to the eye fundus to reveal endoluminal blood flow profiles in the retina and choroid.[6] Laser Doppler imaging by holography provides high-contrast visualization of local blood flow in choroidal vessels in humans, with a spatial resolution comparable to state-of-the-art indocyanine green angiography.[citation needed]