摘要
由于图像质量取决于主观视觉标准,基于HVS模型分析图像质量的方法,逐步成为图像质量评价的一个新的活跃研究方向。文章基于JND思路,采用建立正交变换库的方法,将图像划分为不同的频带,获取对应频带下的亮度细节视觉阈值,建立亮度细节损伤因子,确定与图像亮度细节相关的质量评价方法;实验方法扩展了视觉多通道特性的分析方法,对应正交变换亮度细节视觉阈值的结果,可以提供图像质量评价参考使用。
As the image quality depends on the individual subjective visual standard, the video quality analyzing methods based on the human visual system（HVS） model have become an active research field. Based on the idea of JND and the method of building the orthogonal transformation bank, the image is divided into different frequency bands, and the corresponding visual thresholds of luminance details in these bands are acquired. Then the damage factors of luminance details are obtained and a visual quality assessment method related with luminance details is constructed. Experiments are car- ried out, and the luminance detail optical thresholds of familiar orthogonal transformations fit well with subjective visual feelings,which proves the feasibility of the presented method.
出处
《合肥工业大学学报（自然科学版）》
CAS
CSCD
北大核心
2007年第7期833-835,共3页
Journal of Hefei University of Technology：Natural Science
基金
安徽省教育厅重点基金资助项目(2006kj014A)
关键词
亮度细节
JND
图像质量
luminance detail
just noticeable difference（JND）
image quality
