复杂特征全景图像视觉传达效果优化仿真
Optimization and Simulation of Visual Communication Effect of Panoramic Image with Complex Features
秦瑾 1崔茹1
作者信息
- 1. 陕西理工大学,陕西 汉中 723001
- 折叠
摘要
由于全景拍摄中不同相机镜头的焦点距离不固定,因此在拼接之前相邻两个局部图像间就会产生视差,且距离越近的物体产生视差会越大.全景图像效果的优化是提升视觉质量的关键.提出一种复杂特征全景图像视觉传达效果优化方法.利用两种色彩空间模型与二维经验小波变换法,提取出图像的光谱特征与纹理特征.采用马拉特算法完成小波变换与小波分解,得到复杂特征融合后的全景图像重构结果.基于能量函数及负相关性,界定视觉传达效果的降噪优化目标,设计四阶偏微分方程的降噪模型,完成图像降噪处理.基于此,融合冲击滤波器与直方图均衡化,根据各连通分量对应的子图像,拉伸图像灰度级分布形式,增强细节信息,实现视觉传达效果优化.选取一幅具有复杂特征的全景图像,从感官与数据量化两方面评价不同方法下全景图像的优化效果.实验结果验证了上述方法提高了图像的对比度、清晰度、丰富度,且处理时间更短,具备良好的实践性与实时性.
Abstract
Due to the varying focal distances of different camera lenses in panoramic photography,there will be parallax between adjacent local images before stitching,and the closer the object,the greater the parallax.The optimi-zation of panoramic image effects is the key to improving visual quality.In this paper,a method for optimizing visual communication effect of panoramic image with complex features was put forward.Firstly,we used two color space models and two-dimensional empirical wavelet transform to extract the spectral and texture features of image.Second-ly,we used Mallat algorithm to complete wavelet transform and wavelet decomposition,thus obtaining the panoramic image reconstruction results after complex feature fusion.According to the energy function and negative correlation,we defined the optimization target of noise reduction of visual communication effect,and designed a model based on fourth-order partial differential equation to complete the noise reduction of image.On this basis,the impact filter was com-bined with histogram equalization.According to the sub image corresponding to the connected component,we stretched the gray level distribution of image,and enhanced the detail information,thus optimizing the visual commu-nication effect.Finally,we chose a panoramic image with complex features,and then evaluated the optimization effect from two aspects of senses and data quantification.The experimental results have verified that the above method im-proves the contrast,clarity,and richness of images,with shorter processing time and good practicality and real-time performance.
关键词
复杂特征/全景图像/视觉传达效果/小波变换/直方图均衡化Key words
Complex feature/Panoramic image/Visual communication effect/Wavelet transform/Histogram e-qualization引用本文复制引用
基金项目
陕西省教育厅专项科研项目(21JK0082)
陕西省教育厅专项科研项目(17JK0120)
出版年
2024
NETL
NSTL
万方数据