These videos did a great job at described motion parallax. The book defines motion parallax as "an important cue to depth that is based on head movement. The geometric information obtained from an eye in two different positions at two different times is similar to the information from two eyes in different positions in the head at the same time." As the videos show, an easier way of thinking of this is that objects that are closer to you will appear to move faster than objects in the distance, which will appear to be moving at a slower pace. An example that was mentioned in class today is when you are driving at night, the moon always seems to be following you. This can be explained by the motion parallax. Due to the distance of the moon it just appears to be moving at an extremely slow rate. I also found the information about how movies use this effect in movies.
I also like these videos. They help demonstrate the idea of motion parallax. Motion parallax is based on head movements where geometric info is obtained from both eyes in different potions in the head at the same time. Things further in the back appear to move slower than those closer to us as we move in the world. The 2nd video shows how as we look straight ahead to a distance the objects appear more stable and move slower but when we look to items closer to us (tiles on wall) they appear to go much faster.
Motion is a huge part of how our brain perceives it's environment. As an object moves relative to us we are receiving many angles of view and therefore are getting more information. Our brains are able to use movement as a method for collecting more information. Motion parallax allows the brain to judge relative distance by comparing the change in position of objects in the visual field. This sounds a lot like how astronomers measure movement of stars and galaxies and such. They compare the change in position over time with another object's change in position. Everything is about the difference, as we say our brain is interested in contrast.
I think the second video does a better job at describing motion parallax. When the camera is facing the wall, it looks as if it's moving very fast but you can see as soon as the camera goes away from the wall that the person is moving pretty slow. Motion parallax is a depth cue used to figure out how far away objects are by using information from out head movements. The tiles on the wall look much closer and faster because the "eyes" (camera) are right next to it.
These videos did a great job at described motion parallax. The book defines motion parallax as "an important cue to depth that is based on head movement. The geometric information obtained from an eye in two different positions at two different times is similar to the information from two eyes in different positions in the head at the same time." As the videos show, an easier way of thinking of this is that objects that are closer to you will appear to move faster than objects in the distance, which will appear to be moving at a slower pace. An example that was mentioned in class today is when you are driving at night, the moon always seems to be following you. This can be explained by the motion parallax. Due to the distance of the moon it just appears to be moving at an extremely slow rate. I also found the information about how movies use this effect in movies.
I also like these videos. They help demonstrate the idea of motion parallax. Motion parallax is based on head movements where geometric info is obtained from both eyes in different potions in the head at the same time. Things further in the back appear to move slower than those closer to us as we move in the world. The 2nd video shows how as we look straight ahead to a distance the objects appear more stable and move slower but when we look to items closer to us (tiles on wall) they appear to go much faster.
Motion is a huge part of how our brain perceives it's environment. As an object moves relative to us we are receiving many angles of view and therefore are getting more information. Our brains are able to use movement as a method for collecting more information. Motion parallax allows the brain to judge relative distance by comparing the change in position of objects in the visual field. This sounds a lot like how astronomers measure movement of stars and galaxies and such. They compare the change in position over time with another object's change in position. Everything is about the difference, as we say our brain is interested in contrast.
I think the second video does a better job at describing motion parallax. When the camera is facing the wall, it looks as if it's moving very fast but you can see as soon as the camera goes away from the wall that the person is moving pretty slow. Motion parallax is a depth cue used to figure out how far away objects are by using information from out head movements. The tiles on the wall look much closer and faster because the "eyes" (camera) are right next to it.