Onion peeling method

Dasch G J (1992) One-dimensional tomography a comparison of Abel, onion-peeling, and filtered backprojection methods. Applied Optics 31 1146-1153. 

The first of these equations can be solved to obtain qi from measurements of f(v,hi). This value is substituted into the second equation, which is then used along with measurements of f (v, h2) to determine q2. The procedure is continued until qm is determined from the last of the equations. If f (v, hi) is obtained for a number of values of v within an appropriate spectral range, the q s can be determined using nonlinear least squares solutions of Eq. (8.3.8). The retrieval method outlined here is usually called onion peeling in the remote sensing literature. 

Bocco, A. CuveUer, M.E. Richard, H. Berset, C. Antioxidant activity and phenolic composition of citrus peel and seed extracts. J. Agric. Food Chem. 1998,46,2123-2129. Nuutila, A.A. Kammiovirta, K. Oksman-Caldentey, K.M. Comparison of methods for the hydrolysis of flavonoids and phenolic acids from onion and spinach for HPLC analysis. Food Chem. 2002, 76, 519 525. 

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