发明名称 |
Method of converting resolution of video signals and apparatus using the same |
摘要 |
A method converts a resolution of video signals, the method including: calculating up-sampling and down-sampling ratios based on a resolution of an input video signal and a desired resolution of an output video signal; calculating a number of filter tabs by multiplying the up-sampling and down-sampling ratios by a number of side lobes; calculating first filter coefficients of a same number of the filter tabs by multiplying a window function by a sinc function; calculating final filter coefficients by subtracting a result of a multiplication of a Gaussian function by a window function from the first filter coefficients, and then normalizing the final filter coefficients; and performing filtering in vertical and horizontal directions based on the final filter coefficients by modifying a sampling rate of an input video signal depending on the up-sampling and down-sampling ratios, to obtain clear video images.
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申请公布号 |
US2005134731(A1) |
申请公布日期 |
2005.06.23 |
申请号 |
US20040994279 |
申请日期 |
2004.11.23 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
LEE HOYOUNG;KIM CHANGYEONG;PARK DUSIK;LEE SEONGDEOK;LUKIN ALEXEY |
分类号 |
H04N5/205;G06T3/40;H03H17/06;H04N7/01;(IPC1-7):H04N11/20 |
主分类号 |
H04N5/205 |
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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