| 摘要 |
PURPOSE:To detect a dynamic vector with high accuracy for the movement of a pattern or object in a picture by discriminating that a correlation obtained between split patterns with low correlativity is ineffective and excluding the result from the calculation of dynamic vectors as the parallel movement of the entire picture. CONSTITUTION:A correlation device 13 executes the correlation operation between two-frame picture information which are consecutive timewise with respect to split patterns where one pattern is split into plural parts. On the other hand, a correlativity effectiveness/ineffectiveness discrimination circuit 7 discriminates the effectiveness/ ineffectiveness of the correlativity having the highest correlation at each split pattern based on the correlation value 13 outputted from an accumulator 5 and gives a discrimination signal 16 to a discrimination circuit 8. The discrimination circuit 8 calculates a dynamic vector based on three input signals and gives an output to an output terminal 9. That is, the circuit 8 does not use the correlation value obtained between split patterns in which the correlativity having the highest correlation value is discriminated to be ineffective based on the discrimination signal 16 and calculates the dynamic vector by using the correlation value obtained with respect to the remaining split patterns and corresponding shift. |
