Correcting Bidirectional Effect for Multiple-Flightline Aerial Images Using a Semiempirical Kernel-Based Model
文献类型：SCI/SSCI论文
| 作者 | Wang Z. H.; Liu, L. Y. |
| 发表日期 | 2016 |
| 关键词 | Aerial image bidirectional reflectance distribution function (BRDF) correction multiple-flightline semiempirical kernel-based model heihe river-basin hyperspectral data reflectance vegetation products mosaics brdf surface aviris china |
| 英文摘要 | Due to the intrinsic observing characteristics of airborne sensors, the bidirectional effect is inevitable and happens regardless of the number of flightlines being considered. This affects the quantitative use of aerial data over large regions. In this paper, a simple "two-step" bidirectional effect correction scheme based on Ross-Li model (RLM) is developed for multiple-flightline aerial images. First, the localRLMcoefficients and local correction factors (K1) for each flightline were derived independently based on original observed reflectance; next, the global RLM coefficients and global correction factors (K2) for all flightlines were derived based on simulated directional-to-nadir reflectance. Nadir view bidirectional reflectance distribution function (BRDF)-adjusted reflectance (NBAR) from multiple-flightline for fixed illumination condition of "base flightline" was produced using the combination of the two correction factors (K1, K2). Correction experiments conducted using multiple-flightline push-broom compact airborne spectrographic imager aerial images and the NBAR produced by the "two-step" BRDF correction method were compared to other "one-step" methods. The results show that the "two-step" method gave a better BRDF correction performance-a slower trend change for average of NBARs at a constant viewing angle as varying sun-target-sensor geometry, indicating that the trends of bidirectional effects within a given flightline and between flightlines were effectively normalized. It is concluded that our normalization scheme can be applied to remove bidirectional effects of multiple-flightline aerial images without multiangular observations if reasonable land-cover types in the aerial images were determined. |
| 出处 | Ieee Journal of Selected Topics in Applied Earth Observations and Remote Sensing |
| 卷 | 9 |
| 期 | 9 |
| 页 | 4450-4463 |
| 语种 | 英语 |
| ISSN号 | 1939-1404 |
| DOI标识 | 10.1109/jstars.2016.2597855 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/42809]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Wang Z. H.,Liu, L. Y.. Correcting Bidirectional Effect for Multiple-Flightline Aerial Images Using a Semiempirical Kernel-Based Model. 2016. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。