Patent ID: 7409102
Filing Date: 2008-08-05
Classification: G06T,H04N

Abstract:
1. A method comprising: prior to compositing a user interface element with video content, prefiltering pixels of the user interface element by: selecting a source pixel in a user interface element that has an adjacent left and right pixel; ascertaining whether the source and adjacent pixels are opaque and, if so, computing new source pixel color data by applying a filter to color data associated with the source and adjacent pixels; and in an event that the source and adjacent pixels are not opaque, computing a new source pixel alpha component by applying the filter to the source and adjacent pixel alpha components; and after said pre-filtering, adding extensions to each of a left and right edge of the user interface element, wherein said act of adding is performed by adding pixels having alpha components, such that the alpha components are a function of a horizontally adjacent pixel and have individual values that are reduced by a ratio of filter coefficients of said filter.