function C = CoarseCurveCoeff(X); % CoarseCurveCoeff: Returns the tight frame coefficients % at the coarsest scale; % Usage: % C = CoarseCurveCoeff(X); % Inputs: % X m by m matrix, m = 2*2^L. Typically, the input is % obtained after multiplying the Fourier transform of an object % with a low frequency Meyer window % Outputs: % C m by m matrix % Description: % Returns the tight frame coefficient table at the % coarsest scale; these are "Father wavelet coeffficients," % with frequency domain components near the dyadic % low-frequency square Q = [-2^(L-1), 2^(L-1)]^2. % See Also % Curvelet02Xform, Inv_CoarseCurveCoeff, SeparateScales % % By Emmanuel Candes, 2003-2004 C = ifft2_mid0(X)*sqrt(prod(size(X)));