%0 Journal Article
%T ROI progressive image transmission algorithm based on human visual specialties<br>一种基于人眼视觉特性的ROI渐进图像传输算法
%A ZHOU Da-wei
%A GENG Jin-ling
%A ZHENG Ji-ming
%A <br>周大伟
%A 耿金玲
%A 郑继明
%J 计算机应用
%D 2007
%I 
%X In conventional region of interest(ROI) progressive image transmission algorithms,human visual specialties are not taken into account.An improved algorithm based on the properties of wavelet transform and human visual specialties was proposed.Firstly,an image with low resolution was transmitted so that user could decide if the image was needed.On the condition that there is no impact on the subjective quality of ROI,the transmission of ROI coefficients which are not important for visual quality could be delayed.And the bandwidth could be utilized to transmit the important back ground(BG) coefficients.Furthermore,depending on the bit rates,an expansion factor was evaluated.To guarantee the image with better visual effects,the transmission of BG image was controlled by the expansion factor.The experimental results show that the improved algorithm is effective and the expansion factor can accommodate image transmission.
%K Human Visual Specialties(HVS)
%K wavelet transform
%K Region Of Interest(ROI)
%K progressive image transmission<br>人眼视觉特性
%K 小波变换
%K 感兴趣区
%K 渐进图像传输
%K 视觉特性
%K 渐进图像
%K 传输算法
%K visual
%K human
%K based
%K algorithm
%K image
%K transmission
%K 控制作用
%K 有效性
%K 验证
%K 仿真
%K 接收
%K 扩展因子
%K 分级
%K 背景图像
%K 设置
%K 情况
%K 网络带宽
%K 小波系数
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=831E194C147C78FAAFCC50BC7ADD1732&aid=14E16CBD27430512D18AE709CC3286DF&yid=A732AF04DDA03BB3&vid=DB817633AA4F79B9&iid=DF92D298D3FF1E6E&sid=ED2274D65CDCCA90&eid=4F4D699E68EBCB79&journal_id=1001-9081&journal_name=计算机应用&referenced_num=0&reference_num=6