发明名称 |
Enhanced presentation of sub-picture information |
摘要 |
<p>A system is provided for processing video images for display. In one example, the system comprises a stream parser for retrieving a compressed main video data and a sub-picture identifier. A video decoder generates a main video image having a main video intensity value for each pixel in the main video. A sub-picture decoder determines a sub-picture image based on the sub-picture identifier. The sub-picture image includes a pixel data for each pixel in the sub-picture image indicative of a sub-picture pixel type including a background pixel type and a pattern pixel type. Each pixel includes a command code indicative of a background contrast level, a pattern contrast level, a background color level and a pattern color level. An intensity formatter generates a sub-picture pixel intensity for each pixel in the sub-picture image. A preprocessing function calculates, for each sub-picture pixel, a sub-picture pixel intensity by alpha-blending the sub-picture pixel with no main video pixel when the background color intensity is greater than the pattern color intensity. A filtering function performs anti-aliasing filtering on the sub-picture image. A sub-picture alpha-blending function combines the sub-picture image with the main video image using alpha-blending.</p> |
申请公布号 |
EP2031872(A1) |
申请公布日期 |
2009.03.04 |
申请号 |
EP20080014021 |
申请日期 |
2008.08.05 |
申请人 |
HARMAN INTERNATIONAL INDUSTRIES, INCORPORATED |
发明人 |
PARK, YONG-GAB;CROSBIE, JOHN E.;ACHARYA, SHRIKANT |
分类号 |
H04N5/445;G09G5/06 |
主分类号 |
H04N5/445 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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