Ray Tracing

Presentor : Hsu, Hung-Wei

Methods

• Backward Ray Tracing
   
• Phong Shading

Problems

• Lightness will not decrease
• What if RGB values overflow
• Our eyes might be sensitive to different colors
• Why it is so slow to compute a single ball???

Possible solutions

• Let the brightness decrease by distance
• Normalize all color when overflow
• Assume overflow value to be 1
• Actually we don't need to deal with eyes sensitivities
• Parallel compute each pixels on different computers or use C++ as programming language
• GPU can perform well on this method

Summary

• Simple model should be revised
   
• Ray tracing is time-consuming
   
• Parallel computing might help