Moving air or wind is difficult to see.
The motion of atoms can not bee seen with the unaided eye.
One can not see the motion of tectonic plates.
In these examples, the phenomena are not visible but one can measure them.
Air molecules are constantly in motion, but their movement is usually not visible to the human eye. This movement can be felt as wind or seen through the effects it has on other objects.
Is there something specific you need help with?
No, moving objects cannot be a reference point because a reference point is typically a fixed point used to determine the position or motion of other objects. Using a moving object as a reference point would make it difficult to accurately measure or describe the position or motion of other objects relative to it.
People asked me many times whether it is reliable to use human perception to annotate motion. So what is motion? There are two possible answers. First, motion is the physical movement of pixels, and therefore motion has to be measured in a physical way. Second, motion is human percept--motion is what we perceive in our brain, something we can sense and communicate. Look at the following two examples. Do you perceive any motion in Figure 1? Of course, you see a circle is moving along a circular orbit. But is there any pixel moving in Figure 1? As we slow down the motion in Figure 2, we don't see any pixel moving. In fact, this stimulus was composed by a rotating spotlight shining on a dark surface. So physically, no pixel moves, but we cannot deny the fact that something is moving. Also, we want to build a computer vision system that can "perceive" the motion of the circle. If the ultimate goal of computer vision is to let the computer see what humans perceive, then it is certainly the right way to let humans teach computer how to see the world. Our human-assisted motion annotation serves exactly for this purpose. Indeed, we shall show you that (a) humans' annotations are very consistent, and (b) human's annotations are consistent with other ground-truth data.
You can use a high-speed camera or motion-tracking technology to detect the movement of the object even if it's too slow to see with the naked eye. These tools can capture and analyze the motion to determine if the object is in fact moving.
Air
Air molecules are constantly in motion, but their movement is usually not visible to the human eye. This movement can be felt as wind or seen through the effects it has on other objects.
One thing to cover first is how we perceive motion. We can see when we are moving relative to something else, but we cannot actually feel motion; we feel change in motion. Consider that when you are in a car you can feel when you speed up, slow down, or make a turn, but don't feel different when moving at a steady speed, save for bumps in the road and vibration from the engine. The same goes for Earth's rotation; we are moving quite fast, but at a constant speed. We do experience some acceleration from the rotation, but that acceleration is tiny, much less than what we experience from gravity.
Is there something specific you need help with?
No, moving objects cannot be a reference point because a reference point is typically a fixed point used to determine the position or motion of other objects. Using a moving object as a reference point would make it difficult to accurately measure or describe the position or motion of other objects relative to it.
People asked me many times whether it is reliable to use human perception to annotate motion. So what is motion? There are two possible answers. First, motion is the physical movement of pixels, and therefore motion has to be measured in a physical way. Second, motion is human percept--motion is what we perceive in our brain, something we can sense and communicate. Look at the following two examples. Do you perceive any motion in Figure 1? Of course, you see a circle is moving along a circular orbit. But is there any pixel moving in Figure 1? As we slow down the motion in Figure 2, we don't see any pixel moving. In fact, this stimulus was composed by a rotating spotlight shining on a dark surface. So physically, no pixel moves, but we cannot deny the fact that something is moving. Also, we want to build a computer vision system that can "perceive" the motion of the circle. If the ultimate goal of computer vision is to let the computer see what humans perceive, then it is certainly the right way to let humans teach computer how to see the world. Our human-assisted motion annotation serves exactly for this purpose. Indeed, we shall show you that (a) humans' annotations are very consistent, and (b) human's annotations are consistent with other ground-truth data.
You can use a high-speed camera or motion-tracking technology to detect the movement of the object even if it's too slow to see with the naked eye. These tools can capture and analyze the motion to determine if the object is in fact moving.
microrganisms
images which we see in moving condition,or images which are in motion are called animated or animations!
Human eyes are too slow to see fast moving anything
Yes, the grasshopper's compound eyes see motion. Yes, the grasshopper's compound eyes see motion. Yes, the grasshopper's compound eyes see motion. Yes, the grasshopper's compound eyes see motion.
The 1 way you can tell an object is in motion is by having a focus point that does not move and watch and see if the object you are looking for is moving. Another way to notice where the object is now, then later, check and see if the object has been moving. lastly, if you are a scientist, you can use telescopes, computers, and the latest gadgets to tell you if an object is in motion.