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Page $4$ of $6$

COMP$61342$

Figure $2$ shows a pair of stereo images that have been captured using a pair of calibrated cameras.

a$)$ Explain the difference between sparse and dense matching algorithms for stereo$-$based scene reconstruction.

$[4$ marks$]$

b$)$ Describe a method for detecting interest points in an image.

$[6$ marks$]$

c$)$ Explain how you could use the pair of images in figure $2$ to calculate the distances from the camera of the surface features that appear in the scene.

Figure $2$

In your answer you need to consider all steps in the process, from images to depth values. You also need to give a diagram to illustrate your answer.

$[10$ marks$]$

End of Question $4$