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ray tracing - polygon rendering and ray tracing methodsbasically ray tracing is an exercise that is performed to attain the realism in a scene in
unrepresentative vertex normals - modeling and renderingcalculated vertex normals may not adequately present the surfaces geometry for illustration
orientation dependence - modeling and renderingthe outcomes of interpolated-shading models are dependent of the projected polygons orientation
problem with interpolated shadingthere are several more shading models that intermediate in complication among gouraud and phong shading linking the
demerit - phong shading or normal vector interpolation shadingneeds lot of computations to determine intensity at a point hence increases the cost of
merits -phong shading or normal vector interpolation shadinghence by finding intensities at various points across the edge we determine the intensity
interpolation of surface - polygon renderinginterpolation of surface normals beside the polygonedge between two vertices is demonstrated above in the
computations with phong shadingcomputations involved along with phong shading i find out average unit normal vector at each polygon
phong shading or normal vector interpolation shadingin gouraud shading we were doing direct interpolation of intensities although a more exact method
advantages and deficiencies of gourand shadingadvantages of gourand shading this eliminates the intensity discontinuities related with the constant
linearly interpolate - modeling and renderingi4 i1 t i2 - i1 here t y1 - y2y1 - y2id ia t ib - ia here t adabas same in ie ic t ib - ic here
gourand shading and phong shadinga gourand shading or intensity interpolation schemewe will discuss such scheme in further section of gourand shading
constant intensity shading or flat shading in this technique particular intensity is calculated for each polygon surface that is all points that
polygon -rendering methodsnow we will see the application of an illumination model to execute the rendering of standard graphics objects that are
shading - polygon rendering and ray tracing methodswhen one thing is under the exposure of light so the rays of light are distributed over the
intensity of specular reflection - modeling and renderingintensity of specular reflection based upon material properties of surface and the angle of
phong model or phong specular reflection modelit is an empirical model that is not based on physics although physical observation phong observed here
notes for specular reflection1 in addition to diffuse reflection light sources produce highlights or bright spots termed as specular reflection such
consider a shiny surface along with diffused reflection coefficient consider a shiny surface along with diffused reflection coefficient of 08 and
combined consequence of ambient and diffused reflectionat this time the resulting intensity i will be the total sum of the intensities in case 832
assumption for diffuse reflection - polygon rendering i the diffuse reflections by the surface are scattered along with equal intensity in each
important points about the diffuse reflectionan extremely rough surface appears uniformly bright from each viewing direction q the intensity of
identify a sphere along with a light source above it hence its lower half will not be illuminated in practice in a actual scene this lower half would
ambient reflection-polygon rendering amp ray tracing methodswhen we go for the examiner of light effects so surroundings play a significant role and
categories of reflection - ray tracing methodsin order to achieve realism such phenomenon of reflection which occurs because of interaction of light