UDC 621.382

Increase of noise immunity of photomask images binarization
in the space of the wavelet transform

Shcherbakova G. Yu., Dilevsky A. A., Krylov V. N., Logvinov O. V., Plachinda O. E.

Keywords: binarization, wavelet-transform, subgradient, noise immunity.

An information technology for histogram analysis and a method for noise immunity binary processing of integrated and printed circuits board photo-masks image based on this technology was carryed out. This method based on the sub-gradient iterative noise stability optimization method satisfies the demands of the automated optical control of photo-masks and printed circuits in the error and noise immunity. The maximum binary processing error does not exceed 1 pixel if the signal-to-noise ratio is more than 7.

Ukraine, Odessa National Polytechnic University.