Abstract: Data processing in a mechanical inverseproblem is beneficial to enhancing inversion accuracy.The current paper is dealt with non-digital inversion data processing.A method of quantizedmonotonic denoising and the multiscale analysis are proposed with twocriterions to evaluate the inversion accuracy enhanced by data processing.In the end, a numerical test to optimizeindividually measured data with noise and direct data withadded noise is provided, and then more accurate inversion parameters are obtained.