| 摘要 |
In a motion estimating system, the sum of square values of picture element values of a current block is calculated in a current block square sum calculator and stored in a storage unit. The inner product between the current block and each of some or all of reference blocks in a reference area is multiplied by -2 every reference block, and stored in a memory. Further, the sum of square values of picture elements of some or all of the reference blocks in the reference area is calculated every reference block, and stored a memory. The square sum value of the current block, the product value of -2 and the inner product between the current block and the reference block which corresponds to a motion vector to be searched, and the square sum value of the reference block are added in an adder to set the addition result as an error power value. Finally, the minimum value of the error power is detected to estimate the optimum motion vector.
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