Reduction of computational cost for high quality video scaling

Due to the increasing number of video and image resolutions, scaling gets more and more important for image quality. When it comes to mobile entertainment, e.g. in cars or for cell phones, a number of restrictions apply. For example, space, weight, and power consumption are limited which requires limitations on processing power and memory. In this paper, we introduce an adaptive hybrid decision algorithm for video or image scaling with method-percentage control (MPC). The algorithm combines a simple interpolation method with a more computational cost intensive one. With this approach, it is possible to maintain the quality of a high level interpolation while saving computational costs of up to 66% with respect to a high quality scaling algorithm. With these characteristics it is well qualified for mobile applications.