现代电子技术2012，Vol.35Issue(4)：91-94,4.
基于DaVinci技术数字对焦重构算法研究与实现
Implementation of digital refocusing reconstruction algorithm based on DaVinci technology
摘要
Abstract
The digital refocusing light-field photography is a new kind of computational photography, which capturs fourdimensional light-field information by optical methods and reconstructs two-dimensional spatial information and one-dimensional depth information in object space to photograph focused at different depths. Based on the research of digital refocusing reconstruction algorithms < the hardware implementation of digital refocusing algorithms for reconstruction of light-field images is presented. The DM6467 processor, one of TI's DaVinci series, is utilized as the processing platform. Images at different depths are reconstructed by changing refocusing coefficient. Moreover, code optimization methods such as cyclic decomposition, project-level optimization and so on are proposed according to the C64x+dsp core, which improves the code excutive efficiency by a factor of 18. It has a instructive significance for realizing a portable and real-time light-field imaging system in the future.关键词
数字对焦/图像重构/DM6467/算法优化Key words
digital refocusing/image reconstruction/ DM6467/algorithm optimization分类
信息技术与安全科学引用本文复制引用
彭丁国,袁艳,周志良,杨旺林..基于DaVinci技术数字对焦重构算法研究与实现[J].现代电子技术,2012,35(4):91-94,4.基金项目
国家自然科学基金资助项目(60972088) （60972088）
长江学者和创新团队发展计划资助(IRT0705) （IRT0705）
