Display Border Gain Mapping for Rounded-Edge Artifact Reduction

The patent applies different gain values to different pixel positions based on their proximity to the display region border. Pixels closer to the border receive different gain adjustments than pixels farther away, creating a gradient effect that locally modifies image data quality at border regions while preserving overall image integrity. This resolves the contradiction by making the adaptation localized rather than uniform.

The patent modifies the luminance parameter of pixels near the border by applying gain values derived from a compressed gain map. This parameter change adjusts the brightness of border-adjacent pixels to prevent color fringing and aliasing artifacts, thereby improving image quality at the problematic border regions while maintaining adaptability to non-rectangular display shapes.

The patent segments the gain map data into multiple compressed representations that can be efficiently stored and selectively accessed. Instead of storing complete gain values for every pixel, the system divides the gain information into manageable segments that reduce memory requirements while preserving the necessary precision for accurate gain application at each pixel position.

The patent uses a compressed gain map that stores gain information in a reduced format, effectively creating a compact copy of the full gain data. This compressed representation maintains the essential gain characteristics needed for artifact reduction while occupying significantly less memory space, thus resolving the contradiction between precision and storage quantity.