An Optimized Method for Terrain Reconstruction Based on Descent Images
Journal Title: Journal of Engineering and Technological Sciences - Year 2016, Vol 48, Issue 1
Abstract
An optimization method is proposed to perform high-accuracy terrain reconstruction of the landing area of Chang’e III. First, feature matching is conducted using geometric model constraints. Then, the initial terrain is obtained and the initial normal vector of each point is solved on the basis of the initial terrain. By changing the vector around the initial normal vector in small steps a set of new vectors is obtained. By combining these vectors with the direction of light and camera, the functions are set up on the basis of a surface reflection model. Then, a series of gray values is derived by solving the equations. The new optimized vector is recorded when the obtained gray value is closest to the corresponding pixel. Finally, the optimized terrain is obtained after iteration of the vector field. Experiments were conducted using the laboratory images and descent images of Chang’e III. The results showed that the performance of the proposed method was better than that of the classical feature matching method. It can provide a reference for terrain reconstruction of the landing area in subsequent moon exploration missions.
Authors and Affiliations
Xu Xinchao, Zheng Zhenzhen, Liu Shaochuang
Keywords
Related Articles
- EP ID EP203736
- DOI 10.5614/j.eng.technol.sci.2016.48.1.4
- Views 135
- Downloads 0
A Reconstruction Method for Compressed Sampling in Shift-Invariant Spaces
A traditional sampling method is that the signal should be sampled at a rate exceeding twice the highest frequency. This is based on the assumption that the signal occupies the entire bandwidth. In practice, however, man...
Anatomy of Injury Severity and Fatality in Indonesian Traffic Accidents
There has been a steady increase in traffic accidents with major injuries in Indonesia over the last 10 years, especially those with a score higher than 3 on the Abbreviated Injury Scale (AIS). Frontal, side, and rear co...
Cultivation Strategy for Freshwater Macro- and Micro-Algae as Biomass Stock for Lipid Production
In this research, an algae cultivation strategy was studied. Integrating algae cultivation with wastewater treatment is currently seen as one of the most economical ways of producing algae biomass. A combination of an an...
Finite Element Analysis of Bus Rollover Test in Accordance with UN ECE R66 Standard
Bus transportation plays a significant role in short and long distance mass transportation in Indonesia. The number of buses in Indonesia shows significant growth every year. However, there is a lack of regulations regar...
Production and Delivery Batch Scheduling with Multiple Due Dates to Minimize Total Cost
This paper addresses an integrated production and delivery batch scheduling problem for a make-to-order environment over daily time period, where the holding costs of in-process and completed parts at a supplier location...