1. Pixels: a. We can see nearby objects easily, but to see distant objects clear
ID: 3751006 • Letter: 1
Question
1. Pixels: a. We can see nearby objects easily, but to see distant objects clearly we need a telescope. Also, we need microscopes to see small objects clearly. For some reason, we can't see things in infinite detail. There is something about the human visual system that limits the amount of detail we can see, What is it? b. Animations consist of many images (frames) shown in rapid succession, at 6o frames per second. Suppose a single frame of an animation contains 640x48o pixels, and each pixel takes up three 8-bit bytes (r, g, and b). Suppose we can compress video by a factor of ten-to-one. If so, how many seconds of video can be stored in 1 megabyte (1,000,000 bytes)?Explanation / Answer
a. There is the limit on human eye can see,
according to researches human eye can see only 576 megapixel. Thats why we are not able to see the mircoscopic and distant object clearly.
b.
60 frames per second
frame size = 640*480
1 pixel size = 3 bytes
1 frame has = 640 * 480 * 3 = 921600 bytes
video can be conpressed by a factor of 10 to 1
so no of bytes in resultant video are 921600 / 10 = 921600
total no of frames is 1,000,000/921600 = 10.85 frames
no of seconds = 10.85 / 60 = 0.18 seconds of video
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