| 摘要 |
Signal data 800 may comprise signal values for a high number of pixels. A method for processing the signal data 800 to perform integral sums more efficiently involves defining a reference or calculation point 820 at a corner of a summation region from which a representative element 840 of a first and second border array 810 can be defined and an integral sum 850 of the signal values of pixels located within the summation region evaluated using the first and second representative elements. The first representative element may have a minimum distance to the calculation point. The boundary of the summation region may meet the first border array. The representative elements position may coincide with the position of the calculation point. The first representative element may be a corner element of the first border array. Pixel or element values may be stored in a hierarchical data structure. The calculated sum may be used 860 in pattern recognition and the signal data obtained form an imaging unit. A second invention relates to a hierarchical data structure for processing signal data with parent and child data blocks. |
