Phong Reflection Model Parameters

1. What are the three components of the Phong lighting model?
2. What are the illumination model parameters?
3. How is Phong shading calculated?
4. Why is Blinn Phong better?

What are the three components of the Phong lighting model?

The major building blocks of the Phong lighting model consist of 3 components: ambient, diffuse and specular lighting.

What are the illumination model parameters?

The illumination parameters are the intensity and direction of the light source. In the first part of this paper, estimators from the literature are reviewed. Most recent estimators evaluate as input data two video images as well as the 3D shape and the 3D motion of the visible moving objects.

How is Phong shading calculated?

Voltaires text on phong shading (OTMPHONG. TXT) used the equation color = specular + (cos x) * diffuse + (cos x)^n * specular for calculating phong lighting.

Why is Blinn Phong better?

You can see that the Blinn-Phong specular exponent is bit sharper compared to Phong. It usually requires a bit of tweaking to get similar results as to what you previously had with Phong shading. It's worth it though as Blinn-Phong shading is generally more realistic compared to default Phong shading.