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ISRO | ISRO CS 2013 | Question 31
  • Last Updated : 15 May, 2018

In which of the following shading models of polygons, the interpolation of intensity values is done along the scan line?
(A) Gourard shading
(B) Phong shading
(C) Constant shading
(D) Flat shading

Answer: (A)

Explanation: Gourard shading is the interpolation technique. In this method intensity levels are calculated at each vertex and interpolated across the surface and intensity values for each polygon are matched with the values of adjacent polygons along the common edges.This eliminates the intensity discontinuities that can occur in flat shading.

Option (A) is correct.

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