Comparison was made among different microchannels with different channel aspect ratios (AR) to show the influence o.

Scanner errors include pixel interval error,horizontal-to-vertical proportion error and starting position error.

Since a knitted fabric consists of regular repeating units, after preprocessing its original image, applying the FFT to the image and getting frequency character of its density, the density is measured.

In this paper,we propose the architecture of Radio and TV Information security based on the reality and an analytical methodology for information security based on its vertical and horizontal structure.