OPTI 201R L6 - 42 Handedness / parity ! Handedness or...

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OPTI 201R Fall 2009 42 Handedness / parity ! “Handedness or parity is the orientation of the image relative to (the standard right-handed person, or) the original orientation of the object .” (pg. 39 in our textbook) ! The handedness or parity of an image (or object) quite literally refers to mirror-image versions of each other, just as one’s right hand and one’s left hand are mirror-images of each other. ! Mirror-image " If you hold the palm of your right hand facing a flat mirror, its image looks like the palm of your left hand (and vice versa). ! Handedness and parity are used interchangeably. ! “When interpreting the image handedness, one is looking back toward the source (-z direction).” ! Images projected onto an opaque surface (film, CCD chip, the wall, etc.) need to interpreted looking at the image (along the +z direction). ! “…so the hard copy of the image is rotated 180 ° (confusing statement— IGNORE ) KNOW THE CONTEXT OF HOW THE IMAGE IS TO BE VIEWED.
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OPTI 201R Fall 2009 43 ! Image parity is described by 4 terms .
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OPTI 201R L6 - 42 Handedness / parity ! Handedness or...

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