OLED Brightness Transition Regions for HDR Boundary Smoothing

The patent applies local quality by making different parts of the image have different brightness characteristics. Specifically, transition regions are created with gradual brightness changes, while other regions maintain their original high or low brightness levels. This allows the image to have both high brightness contrast in main areas and smooth transitions at boundaries, resolving the contradiction between brightness contrast and abrupt boundary effects.

The patent introduces transition regions as intermediary zones between high-brightness and low-brightness regions. These transition regions act as mediators that gradually blend the brightness levels, preventing abrupt changes at boundaries while preserving the overall brightness contrast of the HDR image. The transition regions serve as a buffer zone that smooths the transition without compromising the high contrast in the main content areas.

The patent applies segmentation by dividing the image into distinct regions: high-brightness regions, low-brightness regions, and transition regions. This segmentation allows for targeted processing where transition regions are specifically identified and handled with gradual brightness adjustments, while other regions maintain their original characteristics. The segmentation approach simplifies the processing complexity by focusing computational efforts only on the boundary areas that require smoothing.

The patent applies partial action by applying brightness transition processing only to specific boundary regions rather than the entire image. This selective approach reduces processing complexity compared to applying global brightness adjustments, as computational resources are concentrated only on the transition zones where abrupt changes occur, leaving the rest of the image processing unchanged.