Raster Image Tile Rendering with Integer Pixel Width Adjustment

The patent applies preliminary action by calculating and storing the cumulative sum of tile intervals before the actual tile drawing process. This pre-computed cumulative sum array allows the system to directly determine the starting coordinate of each tile without iterative addition during rendering, thereby eliminating coordinate drift while maintaining efficient tile-based rendering. The cumulative sum is calculated in advance based on the tile interval array, ensuring that each tile's position is precisely determined from the beginning.

The patent applies segmentation by dividing the tile drawing process into independent tile units that are rendered separately rather than requiring the entire bitmap to be held in memory simultaneously. Each tile is drawn based on its path data and the pre-computed cumulative sum coordinates, allowing memory to be released after each tile is rendered. This segmented approach maintains precise tile positioning while dramatically reducing peak memory requirements compared to holding the complete scaled bitmap in memory.