Ksenia K. Methods of development of images compression technology on the basе of invariant-spatial data presentation

The analysis of technologies of data processing and transmission in information telecommunication systems (ITCS) is provided. The main indicators of functioning efficiency of ITCS are defined. The role and of images compression algorithms in problems of reduction of data delivery time in ITCS is defined. The analysis of images images compression methods is provided, their basic advantages and disadvantages are defined. Expediency of increase of compression cofficients and, as a result, further development of the new images compression technology is proved. The method of binary sequences coding invariant to statistical methods - a method of the invariant and spatial coding (ISC) - is developed. The rule of calculation of ISC codes in a cross-correlation group by value total bit correlation of binary sequence is defined and proved. The estimation of minimum coefficient of compression of binary sequence with the method of ISC is provided. The developed method allows providing the minimum values of the compression coefficients in the range from 1.2 to 1.667. The method of restoration of initial binary sequences on the basis of values of the ISC codes and correlation signs - a method of invariant and spatial decoding (ISdC) is developed. The rule about unambiguity of representation of binary sequence with the ISC code is provided and proved. The analytical model of coding of binary sequences in structure of images transformant is developed. The analytical model of coding binary sequences in structure of images transformant on the basis of ISdC is developed. The estimation of coefficient of compression for binary sequences in binary presentation of structure of discrete cosine transforms with the method of ISC is provided. The developed method of coding provides the increase of the compression coefficient in the comparison to existing methods on the value in the range from 11% to 134%. The technology of images compression and restoration on the basis of the JPEG method is improved. The method of efficiency estimation of improved technology of images compression on the basis of the ISC is developed. The esti-mation of quality of the restored images on the basis of value of a peak ratio signal/noise for test images is carried out. The values of the calculated peak signal/noise ratio for images of different classes allows to make the conclusion that mproved technology of images compression on the base of ISC method causes the restoratios in the structure of the rebuild image which can not be fixed with the human's sences. The estimation of compression coefficients which are provided when processing images according to the improved technology of compression is carried out. The estimation of time spended on compression and restoration of images when using improved technology of compression is carried out. The improved technology of images compression on the base of ISC method provides the increase of the compression coefficient in the comparison to JPEG on the value up to 67%. The method of efficiency estimation of the improved technology of compression on the base of method of ISC on the basis of value of integral estimation - absolute increase of delivery time in case of integration of images compression technology on the base of ISC into ITCS - is developed for the first time. The improved technology of images compression on the base of ISC method provides the decrease of the images delivery time in the comparison to JPEG on the value up to 28 %.