Thursday, July 24, 2014

Final #2 Monocular Depth Cues


The above image shows the monocular depth cue called occlusion. Occlusion is when an object that is closer to the avatar covers up an object further away to show perspective that one object is blocking the visuals of the other due to distance. As seen above, the rocks that engulf the underwater dome occlude it from vision showing the occlusion effect.

The above image depicts the monocular depth cue of shading. As you can see, shading is used on the avatars shoulders and head, as well as around the platform the avatar is standing on, to show different light shadings. This shading enables the user to see perspective of height through the way the light is reflecting and shading the shadows in the area ie. the height different between the top of the head and the shoulder & forearms on the avatar. 



The above two screenshots depict the monocular depth cue of distance. The image part 1 shows the house and trees from a further distance and they appear smaller in comparison to the avatar. In the second screenshot, part 2, the distance between the avatar and the house have decreased and thus the house seems much larger in comparison to before. This again emulates real life image perception as objects that are further away appear smaller.


The above screenshot illustrates monocular depth cue of texture density. The keyboard keys that appear closer to the camera are clearer and more defined than the ones further away. This emulates the real life image perspective to emulate distance.


The above screenshot shows the linear perspective monocular depth cue. It is illustrated by the parallel lines of the street becoming closer and closer together seemingly in the distance. This emulates real distance perspective in our lives as well. 



The above screenshot illustrates the atmospheric perspective monocular depth cue. In this, the detail of the closer house far surpasses the detail of the one in the distance. This is due to the way light fragments in the distance and does not retain detail.

This is a Final exercise to show examples of Monocular Depth Cues from the Immersive Education course that I am taking at Boston College. The course is called Discovering Computer Graphics. For details, visit the immersive BC portal at http://immersiveeducation.org/@/bc/


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