Which of the following is a binocular cue for depth perception? Explain it briefly and select one from following
A. relative height.
B. retinal disparity.
C. linear perspective.
D. relative clarity.
The Correct Answer and Explanation is :
The correct answer is B. retinal disparity.
Explanation:
Binocular cues for depth perception are those that require the use of both eyes to perceive depth and distance. These cues rely on the different perspectives that each eye has due to their slight separation, allowing the brain to judge how far or near objects are.
Retinal disparity refers to the slight difference in the images that each eye receives due to the horizontal separation between the two eyes (usually around 6.5 cm in adults). When looking at an object, each eye sees it from a slightly different angle, and the brain compares these two images. The greater the disparity between the two images, the closer the object is perceived to be. If the images are nearly identical, the object is further away. This binocular cue is especially effective at short distances and helps us perceive depth in our three-dimensional world.
Other options and why they are not binocular cues:
- Relative height (Option A) is a monocular cue, meaning it can be perceived with one eye. It involves objects that are higher in the visual field being perceived as farther away.
- Linear perspective (Option C) is also a monocular cue. It refers to the way parallel lines appear to converge as they recede into the distance, such as railroad tracks in the distance.
- Relative clarity (Option D) is another monocular cue. It involves perceiving distant objects as less sharp or more hazy compared to objects that are closer.
Thus, retinal disparity is the correct binocular cue that helps us judge depth and distance.
Now, I will generate an image to visually explain retinal disparity.
Here is an image that visually demonstrates retinal disparity. You can see how the object (in this case, a tree) appears from two different perspectives when viewed by the left and right eyes. The slight difference between the two images illustrates how retinal disparity works, helping the brain perceive depth.
Let me know if you need further clarification!
