Linear and Incremental Acquisition of InvariantShape

| We show how to automatically acquire a Euclidean shape representations of objects from noisy image sequences under weak perspective. The proposed method is linear and incre-mental, requiring no more than pseudo-inverse. A nonlinear but numerically sound preprocessing stage is added to improve the accuracy of the results even further. Experiments show that attention to noise and computational techniques improve the shape results substantially with respect to previous methods proposed for ideal images.