Abstract

Lighting simulation and image synthesis for outdoor scenes are difficult because of the geometric complexity and the presence of lighting interaction and atmospheric extinction in the outdoor environment. An efficient method of image synthesis by use of a linear combination of basic images is presented. With respect to linearity of the illumination function, the coefficients of basic images of various Sun positions and sky situations can be calculated. Furthermore, the relationship among visibility distance, image contrast, and resolution is addressed so that the desired images can be generated under all weather conditions. It is shown that a uniform formula is available and feasible for fixed scene and camera geometry.

© 2001 Optical Society of America

Outdoor scene reflectance measurements using a Bragg-grating-based hyperspectral imager

Jia Eckhard, Timo Eckhard, Eva M. Valero, Juan Luis Nieves, and Estibaliz Garrote Contreras
Appl. Opt. 54(13) D15-D24 (2015)

Color changes in objects in natural scenes as a function of observation distance and weather conditions

Javier Romero, Raúl Luzón-González, Juan L. Nieves, and Javier Hernández-Andrés
Appl. Opt. 50(28) F112-F120 (2011)

Simple and effective calculations about spectral power distributions of outdoor light sources for computer vision

Jiandong Tian, Zhigang Duan, Weihong Ren, Zhi Han, and Yandong Tang
Opt. Express 24(7) 7266-7286 (2016)

Catchment areas of panoramic snapshots in outdoor scenes

Jochen Zeil, Martin I. Hofmann, and Javaan S. Chahl
J. Opt. Soc. Am. A 20(3) 450-469 (2003)

Multi-polarization passive millimeter-wave imager and outdoor scene imaging analysis for remote sensing applications

Yayun Cheng, Fei Hu, Hongfei Wu, Peng Fu, and Yan Hu
Opt. Express 26(16) 20145-20159 (2018)