Texture-based visualization method is a common method in the visualization of vector field data.Aiming at adding color mapping to the texture of ocean vector field and solving the ambiguity of vector direction in text...Texture-based visualization method is a common method in the visualization of vector field data.Aiming at adding color mapping to the texture of ocean vector field and solving the ambiguity of vector direction in texture image,a new color texture enhancement algorithm based on the Line Integral Convolution(LIC)for the vector field data is proposed,which combines the HSV color mapping and cumulative distribution function calculation of vector field data.This algorithm can be summarized as follows:firstly,the vector field data is convoluted twice by line integration to get the gray texture image.Secondly,the method of mapping vector data to each component of the HSV color space is established.And then,the vector field data is mapped into HSV color space and converted from HSV to RGB values to get the color image.Thirdly,the cumulative distribution function of the RGB color components of the gray texture image and the color image is constructed to enhance the gray texture and RGB color values.Finally,both the gray texture image and the color image are fused to get the color texture.The experimental results show that the proposed LIC color texture enhancement algorithm is capable of generating a better display of vector field data.Furthermore,the ambiguity of vector direction in the texture images is solved and the direction information of the vector field is expressed more accurately.展开更多
矢量场可视化是科学计算可视化中最具挑战性的研究课题之一 .为了能在二维屏上直观显示三维矢量场 ,将基于纹理的 L IC方法拓展到三维矢量场可视化 ,通过设计稀疏线噪声纹理并配合斜坡卷积核提高Volum e L IC图象质量 ,显著增强空间深度...矢量场可视化是科学计算可视化中最具挑战性的研究课题之一 .为了能在二维屏上直观显示三维矢量场 ,将基于纹理的 L IC方法拓展到三维矢量场可视化 ,通过设计稀疏线噪声纹理并配合斜坡卷积核提高Volum e L IC图象质量 ,显著增强空间深度感 ,并采用光线投射直接体绘制方法生成 Volum e L IC图象 ;另外 ,针对循环动画的突兀现象 ,提出 HRCK(Hanninged Ram p Convolution Kernel)法生成流畅的 Volum e L IC循环动画 ;提出Volum e L IC Probe交互洞察三维矢量场内部信息 .通过实例表明 ,本文所提方法具有良好的可视化效果 ,交互方便 .展开更多
基金The National Natural Science Foundation of China under contract Nos 61702455,61672462 and 61902350the Natural Science Foundation of Zhejiang Province,China under contract No.LY20F020025。
文摘Texture-based visualization method is a common method in the visualization of vector field data.Aiming at adding color mapping to the texture of ocean vector field and solving the ambiguity of vector direction in texture image,a new color texture enhancement algorithm based on the Line Integral Convolution(LIC)for the vector field data is proposed,which combines the HSV color mapping and cumulative distribution function calculation of vector field data.This algorithm can be summarized as follows:firstly,the vector field data is convoluted twice by line integration to get the gray texture image.Secondly,the method of mapping vector data to each component of the HSV color space is established.And then,the vector field data is mapped into HSV color space and converted from HSV to RGB values to get the color image.Thirdly,the cumulative distribution function of the RGB color components of the gray texture image and the color image is constructed to enhance the gray texture and RGB color values.Finally,both the gray texture image and the color image are fused to get the color texture.The experimental results show that the proposed LIC color texture enhancement algorithm is capable of generating a better display of vector field data.Furthermore,the ambiguity of vector direction in the texture images is solved and the direction information of the vector field is expressed more accurately.
文摘矢量场可视化是科学计算可视化中最具挑战性的研究课题之一 .为了能在二维屏上直观显示三维矢量场 ,将基于纹理的 L IC方法拓展到三维矢量场可视化 ,通过设计稀疏线噪声纹理并配合斜坡卷积核提高Volum e L IC图象质量 ,显著增强空间深度感 ,并采用光线投射直接体绘制方法生成 Volum e L IC图象 ;另外 ,针对循环动画的突兀现象 ,提出 HRCK(Hanninged Ram p Convolution Kernel)法生成流畅的 Volum e L IC循环动画 ;提出Volum e L IC Probe交互洞察三维矢量场内部信息 .通过实例表明 ,本文所提方法具有良好的可视化效果 ,交互方便 .
