ABSTRACT
The look-up table method can avoid complex triangle shipment and has a faster speed and high precision, but due to the lookup table and large amount of image data it takes up higher speed memory space and the SDRAM chip has low efficiency when reading and writing a single data. It is leading to a single pixel expansion speed slower, the whole picture expansion speed slower. Under the conditions of hardware is in control and need a large space, the look-up table method is not suitable.
