ASM: A Multi-Resolution Method by Cootes and Taylor
ASM (Active Shape Model) is an example of a multi-resolution method developed by Cootes and Taylor. The core concept involves training ASM models using manually annotated image contours. During training, Principal Component Analysis (PCA) is applied to identify the model's principal variations, enabling automatic recognition of plausible object contours. The ASM model incorporates a covariance matrix to describe vertical texture variations at landmark points when positioned correctly.