Method and apparatus for contrast enhanced photography of wind turbine blades

摘要: A method and apparatus for inspecting utility scale wind turbine generator blades from the ground includes a digital camera an adjustable polarizing filter on stable platform. The is used to record multiple images with varying polarization angles using artificial polarized or solar illumination produce same similar registration but different angles, followed by image processing subtraction absolute difference routines yield high resolution, contrast reduced glare excellent surface definition over field of view.