Blinn–Phong reflection model is a very famous model for 3D computer graphics. It innovates on the basis of the Feng model, which significantly improves the rendering efficiency and provides the basis for a variety of reflection models afterwards. The model is calculated by interpolation to produce a relatively smooth surface reflection effect.
Blinn–Phong abstract the reflection by following values:
View Direction(Camera Direction)
Normal Direction of the surface
Reflect Direction Symmetric with L about N
Half vector between V and L. That is mean:
Ultimately, the model uses the magnitude of the angle between N and H to determine the reflection intensity. Combined with the Lambertian diffusion model, we can get a very good result as below.
You can upload your own OBJ model and texture to see the results.