RT Journal Article ID 19ae0e38285261e7 A1 Kuc, Roman A1 Lepekha, Nikolay P. A1 Kirichenko, Nikolay Fedorovich T1 Three-dimensional Objects Recognition by Ultrasonic Echo-Signal JF Journal of Automation and Information Sciences JO JAI(S) YR 1999 FD 1999-11-01 VO 31 IS 11 SP 86 OP 94 K1 three-dimensional recognition K1 ultrasonic echo-signal processing K1 learning and recognition algorithms K1 echo-signal transformation K1 vector of attributes K1 example AB Three-dimensional recognition of an object and its spatial orientation by ultrasonic echo-signal processing is under consideration. The learning and recognition algorithms are based on a special construction of the eigen space and eigenvectors for every object. Then the recognition algorithm is reduced to the following stages: transformation of the echo-signal to the vector of attributes; construction the projection of the vector of attributes onto the eigen space; minimization of the distance between the vector of attributes and its projection. PB Begell House LK https://www.dl.begellhouse.com/journals/2b6239406278e43e,654b8d464f972a81,19ae0e38285261e7.html