Research on modeling and rendering of realistic infrared texture of grassland
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摘要: 纹理是使图像具有视觉真实感的重要因素，红外纹理生成是场景红外成像仿真的重要组成部分，也是真实感场景仿真的迫切需求。以在图像平面直接生成具有真实感的景物红外纹理图像为目标，提出了一种草地的红外纹理建模与真实感绘制方法，从模拟组分温度分布和空间结构形态两方面开展研究。首先，考虑土壤-植被-大气间的热交换过程，建立红外辐射的耦合求解模型；其次，构建各组分的空间分布模式；最后，将已经求解的红外辐射数据映射到图像空间，生成具有真实感的红外纹理图像。对近距离或放大状态下草地红外纹理的视觉效果进行了模拟，理论分析和仿真结果表明：所提出的红外纹理模拟方法具有一定的合理性和有效性。Abstract: Texture is one of the most important factors to create visual realism in images. Infrared texture generation plays an important role in the field of infrared imagery simulation, and provides an effective way to satisfy the urgent need of realistic scene simulation. In order to generate realistic infrared texrtures directly in image space, a novel method for modeling and rendering realistic infrared texture of grassland was proposed. It mainly researched modeling the temperature field and the structure mophology of grassland. Firstly, the radiation transfer process in soil-vegetaion-atmosphere system was analyzed, which was expressed in the coupled infrared radiation model. Secondly, the spatial distribution pattern of grassland were simulated. Finally, infrared radiation properties were mapped to image space to generate realistic texture images. The infrared textures of grassland under close or magnification observation state were simulated. Theoretical analysis and simulation results justify the effectiveness and resonableness of the proposed method.
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Key words:
- texture modeling /
- realistic /
- grassland /
- infrared radiation /
- coupled model
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[1] [2] Zhao Weiyu. Simulation test technology of electro-optical countermeasures[J]. Infrared and Laser Engineering, 2001, 30(3): 171-175. (in Chinese)赵炜渝. 光电对抗仿真试验技术[J]. 红外与激光工程, 2001, 30(3): 171-175. [3] Xu Chuangang, Song Liquan. Design and realization of infrared complicated scene simulation system[J]. Infrared and Laser Engineering, 2005, 34(2): 241-252. (in Chinese)徐传刚, 宋利权. 红外复杂场景仿真系统的设计与实现, 红外与激光工程, 2005, 34(2): 241-252. [4] [5] [6] Weiss R A, Sabol B M, Smith J A, et al. Physics-based infrared terrain radiance texture model[R]. Vicksburg: Army Engineer Waterways Experiment Station, 1995: 20-26. [7] [8] Schott J R, Salvaggio C N, Brown S D. Incorporation of texture in multispectral synthetic image generation tools[C]//SPIE, 1995, 2469: 189-196. [9] Shao Xiaopeng. Research on infrared texture synthesis[D]. Xi'an: Xidian University, 2005.邵晓鹏. 红外纹理生成方法研究[D]. 西安: 西安电子科技大学, 2005. [10] [11] [12] Zhao Can. Research on the design and generation method of OGRE-oriented infrared texture[D]. Xi'an: Xidian University, 2010. (in Chinese)赵灿. 面向OGRE的红外纹理设计与生成方法研究[D]. 西安: 西安电子科技大学, 2010. [13] [14] Zhen Hongbin. Research on infrared radiation characteristics of the soil-vegetation mixed terrain surface[D]. Xi'an: Xidian University, 2007. (in Chinese)郑宏斌. 土壤-植被混合型地表红外辐射特性研究[D]. 西安: 西安电子科技大学, 2007. [15] [16] Liu Qian, Zhu Feng, Hao Yingming, et al. Coupled model for simulating infrared radiation temperature of soil-vegetation mixed terrain surface[J]. Application Research of Computers, 2011, 28(12): 4589-4592. (in Chinese)柳倩, 朱枫, 郝颖明, 等. 土壤-植被混合地表红外辐射温度场的耦合建模方法[J]. 计算机应用研究, 2011, 28(12): 4589-4592. [17] Hopkins B. A new method for determining the type of distribution of plant individuals[J]. Annals of Botany, 1954, XVⅢ: 213-226. [18] [19] Qin Jianfei, Ma Yuzhong, Yuan Shidong. Discuss on IR radiation characteristics of woodland background[J]. Engineer Equipment Research, 2004, 23(4): 29-33. (in Chinese)秦建飞, 马玉中, 袁世东. 林地背景红外辐射特性初探[J]. 工兵装备研究, 2004, 23(4): 29-33. [20] [21] [22] Fu Kaihua. The study on thermal infrared emission directionality of typical soil-vegetation canopy based on 3-D structure simulation model[D]. Beijing: Institute of Remote Sensing Application Chinese Academy of Sciences, 2005. (in Chinese)符锴华. 基于3-D模拟的典型植被热辐射方向性研究[D]. 北京: 中国科学院遥感应用研究所, 2005. [23] Shao Xiaopeng, Yang Wei, Zhang Jianqi. Approach to generate IR images of natural background[J]. Infrared and Laser Engineering, 2000, 29(3): 11-14. (in Chinese)邵晓鹏, 杨威, 张建奇. 自然地面背景红外图像生成方法研究, 红外与激光工程, 2000, 29(3): 11-14. -
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