发明申请
US20070071352A1 Conversion of a sub-pixel format data to another sub-pixel data format
有权
将子像素格式数据转换为另一子像素数据格式
- 专利标题: Conversion of a sub-pixel format data to another sub-pixel data format
- 专利标题(中): 将子像素格式数据转换为另一子像素数据格式
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申请号: US11549600申请日: 2006-10-13
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公开(公告)号: US20070071352A1公开(公告)日: 2007-03-29
- 发明人: Candice Brown Elliott , Michael Higgins
- 申请人: Candice Brown Elliott , Michael Higgins
- 申请人地址: US CA Sebastopol
- 专利权人: Clairvoyante, Inc
- 当前专利权人: Clairvoyante, Inc
- 当前专利权人地址: US CA Sebastopol
- 主分类号: G06K9/40
- IPC分类号: G06K9/40
摘要:
A method of producing a plurality of filter kernels comprised of filter coefficients for use in a sub-pixel rendering operation comprises calculating a plurality of filter coefficients for each filter kernel by dividing a spatial area of an input image that is overlapped by a portion of a spatial rendering area by a total area of the spatial rendering area using floating point arithmetic. The method further comprises multiplying each filter coefficient by a divisor to produce a filter product such that a sum of all filter products produces a filter sum that equals the divisor. Then a binary search operation is performed to find a round off point for the filter sum such that when each filter coefficient is converted to an integer, a sum of the filter coefficients equals the divisor. The filter coefficients are then converted to integers using the round off point.