CAJ | 학술논문

面向飞行器表面流场数据可视化的应用需求，提出一种基于线性卷积（LIC）及纹理平流（IBFVS）相结合的动态纹理可视化方法。算法通过将IBFVS方法的背景随机噪声替换为LIC纹理方式，结合了LIC纹理结果对比度高及IBFVS方法生成速度快的优势；针对LIC绘制速度慢的不足，利用GPU对曲面矢量场投影并插值，生成规则矢量数据场；用GPU对LIC部分进行并行加速，有效提高了LIC纹理图像产生速度；将LIC结果图像加入到IBFVS进行平流，生成纹理图像，最后加入颜色映射，丰富流场信息。实验结果表明，该方法生成的飞行器表面动态纹理图像对比度高，清晰度强，实时绘制性能好。
면향비행기표면류장수거가시화적응용수구，제출일충기우선성권적（LIC）급문리평류（IBFVS）상결합적동태문리가시화방법。산법통과장IBFVS방법적배경수궤조성체환위LIC문리방식，결합료LIC문리결과대비도고급IBFVS방법생성속도쾌적우세；침대LIC회제속도만적불족，이용GPU대곡면시량장투영병삽치，생성규칙시량수거장；용GPU대LIC부분진행병행가속，유효제고료LIC문리도상산생속도；장LIC결과도상가입도IBFVS진행평류，생성문리도상，최후가입안색영사，봉부류장신식。실험결과표명，해방법생성적비행기표면동태문리도상대비도고，청석도강，실시회제성능호。
This paper presents a visualization method for the aircraft surface flow field data. The algorithm is a combination of the linear convolution(LIC)and texture advection(IBFVS)visualization methods. The algorithm by using random noise to replace the background of IBFVS LIC texture way, combines the advantages of high contrast and IBFVS methods to generate fast LIC texture results. Firstly, it projects and interpolates surface vector field to generate vector data field by using GPU. Secondly, it rapidly creates the LIC texture image, and then adds LIC resulting image to the IBFVS advection, to generate the texture image. Finally, it adds color mapping, to display rich information of flow. The experimental results show that the proposed algorithm can generate high contrast, strong clarity and real-time dynamic textures for the aircraft surface flow field data.