发明名称 |
IMAGE QUALITY IMPROVING DEVICE AND METHOD |
摘要 |
A Gaussian filter 2 having a first cutoff frequency extracts a low frequency component signal of a video signal. A subtracter 3 extracts a high frequency component signal by subtracting the low frequency component signal from the video signal. A low pass filter 5 having a second cutoff frequency higher than the first cutoff frequency extracts a lower high frequency component signal, which is a low-frequency-side signal of the high frequency component signal. A multiplier 6 generates a corrected component signal by multiplying the lower high frequency component signal by a predetermined gain G1. An adder 7 adds the corrected component signal to the video signal.
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申请公布号 |
US2011267540(A1) |
申请公布日期 |
2011.11.03 |
申请号 |
US200913054012 |
申请日期 |
2009.07.15 |
申请人 |
VICTOR COMPANY OF JAPAN, LIMITED |
发明人 |
NAKATSUKA SACHIKO;KUBOTA KENJI;AIBA HIDEKI;HASEGAWA JUNICHI;TOYOSHIMA SATOSHI |
分类号 |
H04N5/14 |
主分类号 |
H04N5/14 |
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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