发明名称 |
System and method for scaling video |
摘要 |
Scaling of video is performed using area weighted averaging of input pixels to calculate coefficients to multiply with luminescence and crominence of input pixels. Such coefficients are produced for both the vertical and horizontal scaling directions of the input video stream. When scaling down or scaling up, scaling is first performed in the vertical direction to produce partially scaled pixels, which are then utilized for scaling in the horizontal direction. When scaling up, a pre-interpolation or pre-replication process is utilized to double the inputted pixel grid which doubled pixel grid is then utilized to scale down to the desired pixel grid size, which is greater than the originally inputted pixel grid size.
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申请公布号 |
US5790714(A) |
申请公布日期 |
1998.08.04 |
申请号 |
US19940332961 |
申请日期 |
1994.11.01 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
MCNEIL, WILLIAM LLOYD;FRANK, DAVID CARL |
分类号 |
H04N1/393;G06T3/40;(IPC1-7):G06K9/32 |
主分类号 |
H04N1/393 |
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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