SIGMA: a framework for image understanding integration of bottom-up and top-down analyses
Takashi Matsuyama, Vincent Shang-Shouq Hwang · International Joint Conference on Artificial Intelligence · 1985
The framework and control structure of an image understanding system SIGMA arc presented. SIGMA consists of three experts: Gelmetric Reasoning Expert (GRE) for spatial reasoning. Model Selection Expert (MSE) for appearance model selection, and Low level Vision Expert (LIVE) for knowledge-based picture processing. Tills paper mainly describes the control mechanism for the spatial reasoning by GRE, where bottom-up and top-down analyses are integrated into a unified reasoning process.