| 摘要 |
PROBLEM TO BE SOLVED: To restore the high frequency component of an original signal by cancelling the turned-back components of plural two-dimensional digital data having the deviation of two-dimensional sampling positions and the arbitrary number of turned-back components. SOLUTION: n-Sets of two-dimensional digital data obtained by shifting the sampling position to sample the same object are inputted 1. A first data is inputted to a reference data buffer 2, and a position difference estimation part 3 obtains the sampling position difference between first data and following data, and a weight calculation part 4 calculates a weight corresponding to this position difference. After LPF processing of input data, a wide-band LPF and a resolution increasing part 6 sample the data at intervals narrower than those of the input signal and stores it an intermediate buffer 7. A product sum part 8 weights and adds data in the intermediate buffer 7. |
