Automatic detection of letterbox and subtitles in video

摘要

A method and system for processing video signal. The method and system provide for automatically detecting letterboxing in an input video signal, and scaling a desired portion of the video signal to match a given display device, as well as detecting subtitles in the input video signal and selectively including the subtitles in the desired portion of the video signal. A signal processor (202) receives video image data, calculates image data statistics for each line of the video image, locates at least one desired portion of the video image, scales the desired portion of the video image for display on a display device (116) having a pre-determined aspect ratio.