Mothed and System of Visibility Analysis Based on Human Eye Imaging Process

The human eye is the most important organ to perceive the external environment, and visibility analysis is the basis of ergonomic design and evaluation. The current mainstream visual simulation tools mainly focus on the qualitative analysis within the visual range, lacking the optical modeling process in the complex human-machine-environment system, and cannot reflect the visual features of the human eyes under different working conditions. According to the principle of the rendering pipeline of the current manifold graphics simulation engine, a human vision simulation method based on physical rendering theory is proposed. A real-time rendering engine is designed and implemented. Experiments are carried out on the components of the visual system (camera, lighting and materials), and the results are evaluated using a unified glare evaluation model. The experiments show that the proposed method is helpful to determine the appropriate position and posture of virtual human. Aiming at CATIA platform, CAA/C++technology is adopted to realize the visual analysis component, which further broadens the visibility analysis of CATIA.