发明名称 Guided Filter-Based Detail Enhancement
摘要 Systems and methods for generating a detail-enhanced video signal are provided. In a method for generating the detail-enhanced video signal, an input video signal is received. A first signal that is a linear transformation of the input video signal is generated. A detail signal is generated by determining a difference between the input video signal and the first signal, where the detail signal includes information that is added to the input video signal to generate the detail-enhanced video signal. A filtered detail signal is generated by removing noise from the detail signal. The filtered detail signal is multiplied by a gain function to generate a second signal. The gain function is based on an amount of variance in the input video signal. The input video signal and the second signal are combined to generate the detail-enhanced video signal.
申请公布号 US2014285719(A1) 申请公布日期 2014.09.25
申请号 US201414220528 申请日期 2014.03.20
申请人 Marvell World Trade Ltd. 发明人 Gong Yun;Quang Dam Le
分类号 H04N5/14 主分类号 H04N5/14
代理机构 代理人
主权项 1. A system for generating a detail-enhanced video signal, the system comprising: a filter that receives an input video signal, the filter being configured to: generate a first signal that is a linear transformation of the input video signal, andgenerate a detail signal by determining a difference between the input video signal and the first signal, wherein the detail signal includes information that is added to the input video signal to generate the detail-enhanced video signal; a noise reducer configured to generate a filtered detail signal by removing noise from the detail signal; a multiplier configured to multiply the filtered detail signal by a gain function to generate a second signal, the gain function being based on an amount of variance in the input video signal; and an adder configured to combine the input video signal and the second signal to generate the detail-enhanced video signal.
地址 St. Michael BB