发明名称 APPARATUS AND METHOD FOR INCREASING CODING EFFICIENCY WITH AN ADAPTIVE PRE-FILTER
摘要 A method and apparatus for processing a digital image in a Mobile Equipment operating in a telecommunications network. The digital image includes a frame of data having a plurality of pixels with data. The data of each pixel has a luminance value and a chrominance value. The method begins by obtaining chrominance value for a specified pixel of the digital image. Responsive to the obtained chrominance value, a strength to filter the specified pixel of digital image is determined. The specified pixel is then selectively and adaptively filtered at the determined strength of the filter. Preferably, chrominance values and luminance values for the specified pixel and an adjacent pixel is determined. A threshold for a variation in the range between a highest chrominance level and a lowest chrominance level of the specified pixel and the adjacent pixel is then set. The variation for the specified pixel is determined, and responsive to the value of the variation, low-pass filtering of the specified pixel is applied.
申请公布号 US2007216763(A1) 申请公布日期 2007.09.20
申请号 US20070734166 申请日期 2007.04.11
申请人 ROSSHOLM ANDREAS;THORELL PER 发明人 ROSSHOLM ANDREAS;THORELL PER
分类号 G06T5/00;H04N7/26 主分类号 G06T5/00
代理机构 代理人
主权项
地址