Research on Algorithm of Digital Filtering based on Video Information Security
In this paper, on the basis of the spot pulse width corresponded with character video information vertical stroke, the safe bandwidth of video information is confirmed, filtering image quality appraisal model which takes difference threshold limit value as distinction parameter is built by Weber-Fechner law, the corresponding relation of filtering stop-band cut-off frequency and character is determined, the FIR digital filter is designed. In addition aim at the periodic variation characteristic of the insertion loss which the digital filter inherent, a combinatorial filtering method combine digital filter and analog filter is presented. At last, the correctness and effectiveness of theoretical analysis are validated through simulations and experiments.
information security video information digital filtering image processing
Jin Tian Yang Qiu Liuyu Qian
School of Mechano-Electronic Engineering Xidian University;School of Electronic Engineering Xidian U School of Mechano-Electronic Engineering Xidian University
国际会议
The Fifth International Conference on Information Assurance and Security(第五届信息保障与安全国际会议)
西安
英文
593-596
2009-08-18（万方平台首次上网日期，不代表论文的发表时间）