A method to produce thin-layer lignocellulosic composites, such as wood-based doorskins, that exhibit substantial resistance to moisture is disclosed. After the circuit substrate is sectioned along the outer first section lines, a circuit test is conducted on resulting integrated circuits. The Kalman filter is used to calculate estimated values of floating ambiguities and the lambda notation is used to calculate estimated values of the integer ambiguities based on the floating ambiguities. Both sets of processed pixels are combined to generate a processed output image.