10. An apparatus for detecting a plurality of anatomical landmarks in an image comprising: means for detecting a first landmark of the plurality of anatomical landmarks in the image using marginal space learning (MSL); means for estimating locations of remaining landmarks of the plurality of anatomical landmarks in the image based on the detected first landmark using a learned geometric model relating the plurality of anatomical landmarks; and means for detecting each of said remaining landmarks using MSL in a portion of the image constrained based on the estimated location of each of said remaining landmarks.
10. An apparatus for detecting a plurality of anatomical landmarks in an image comprising: means for detecting a first landmark of the plurality of anatomical landmarks in the image using marginal space learning (MSL); means for estimating locations of remaining landmarks of the plurality of anatomical landmarks in the image based on the detected first landmark using a learned geometric model relating the plurality of anatomical landmarks; and means for detecting each of said remaining landmarks using MSL in a portion of the image constrained based on the estimated location of each of said remaining landmarks. 12. The apparatus of claim 10 , wherein the learned geometric model is a mean shape relating the plurality of anatomical landmarks trained based on training data.