SFF-RTI: an active multi-light approach to shape from focus

Abstract In this paper, we propose a methodology for the fusion of shape from focus and reflectance transformation imaging. This two seemingly disparate methods computational imaging is proposed with purpose leveraging their strengths in understanding overall surface structure (low-frequency detail) texture/micro-geometry (high-frequency detail), respectively. achieved by our new proposal integration varying light images at different distances. We compare three integration: mean gradient response, maximum full vector (FVG). The validation tested was conducted using measure window sizes multi-light to provide clear demonstration effectiveness method. FVG determined higher-quality recovery complex object trade-off increasing scope image acquisition.