| 摘要 |
FIELD: information technologies. ^ SUBSTANCE: for compression and recovery of K>1 images, previously, prior to beginning of communication session on transmitting and receiving sides, random square matrix is identically generated with size of mùm elements, values of which belong to the range from -500 to 500, and by GùK, where G>1, random key matrices with size of Nùm and mùN of single and zero elements, they form matrix of permitted code groups with size of Gùm1 of single and zero elements, where m1ëñm. Then on transmitting side from K immovable halftone images, K matrices are generated with norm values of NùN size elements and transformed into digital form. Matrices of norm values are represented by rectangular matrix with Nùm size of single and zero elements, at the same time the first nil elements of its N line are generated only from elements of permitted code group matrix lines, which are transferred along digital communication channel. On receiving side at first errors are corrected in the first m1 elements of N line in accepted rectangular matrix, then on the basis of available random square and key matrices and rectangular matrix received after correction of errors, K recovered matrices of norm values are generated with Nù size elements, which are used to recover K fixed halftone images. ^ EFFECT: improved quality of messages recovery on receiving side with preservation of specified speed of information transfer through communication channel. ^ 2 cl, 9 dwg |
