Depth and size part 3 Flashcards
How do we create stereoscopic movies (have a sense of depth)?
Use binocular disparity by recording slightly different points of view for the two eyes in live action or computer graphics
What types of cues do regular movies have?
monocular cues
What is a popular way to view stereoscopic movies?
Anaglyph
How does anaglyph work?
Use coloured lenses to deliver one image to each eye. Blue and red lenses. Create two images that are slightly different and make them red and blue so only one eye sees them at a time.
What is an issue with anaglyph?
colour looks weird
What colours do you see through each of the anaglyph lenses?
The blue lens uou see blue
The red lens you see red
How does the letter further away trick work? (red lens on left eye)
Uncrossed correspondence means it is further away. So we want red on the left in the left eye and blue on the right in the right eye
What do polarized lenses do for viewing stereoscopic movies? How does it work?
Deliver one image to each eye. Two projectors project different images on the screen (one vertical and one horizontal image) and the glasses only let each eye see the vertical or horizontally polarized image
How do active shutter glasses work for viewing stereoscopic movies? What are the downsides?
Uses LCD lenses to open and close each lenses in turn. Unwatchable without glasses and expensive
How does inference filter technology work for viewing stereoscopic movies?
Uses wavelength multiplex visualization
Record two images that use different subset of wavelengths. Use glasses that only let you see certain wavelengths in each eye.
How does parallax barrier autostereoscopy work for viewing stereoscopic movies? What is bad about it?
Use tiny barriers to allow one image to reach each eyes. 2 versions of image interweived together. Only works at small distances and you need to be close to it
How do head mounted displays work?
Separate screen for each eye that moves as you move
What is a stereoscope>
gives 3D view of surface
