<caption><image_65>The image shows a man standing in front of a green chalkboard. He is wearing a blue t-shirt and appears to be writing on the chalkboard with a marker. On the chalk, there is a diagram of a camera with a lens and a body of water. The diagram is labeled with the words "2) Visibility or time-of-sight methods" and "Camera arrangements on handout". The man is pointing to the diagram with his right hand.</caption><transcript><audio_66>and this is often referred to in the industry as you have the person again wearing the headset</transcript><transcript><audio_67>and you have the camera out here this is what you have in the lab on the and the camera is facing the user and this is</transcript><video><caption><image_68>The image shows a man standing in front of a green chalkboard. He is wearing a blue t-shirt and is holding a whiteboard marker in his right hand. On the chalkboard, there are several equations written in white chalk. The equations appear to be related to the concept of time-of-sight methods. There is also a diagram of a circle on the right side of the board. The image appears to be taken in a classroom or a classroom setting.</caption><caption><image_69>The image shows a man standing in front of a green chalkboard. He is wearing a blue t-shirt and is holding a white chalk in his right hand. On the chalkboard, there is a diagram of a lightbulb with the words "or line-of-sight methods" written above it. The diagram is drawn in white chalk and appears to be a mathematical equation. The background of the image is blurred, but it seems like the man is in a classroom or a classroom setting.</caption><caption><image_70>The image shows a man standing in front of a blackboard in a classroom. He is wearing a blue shirt and is holding a piece of paper in his hand. The blackboard is green and has white chalk drawings and text written on it. The text reads "or line-of-sight methods" and there is a diagram of a lightbulb on the right side of the blackboard. The man appears to be giving a presentation or lecture.</caption><caption><image_71>The image shows a man standing in front of a green chalkboard. He is wearing a blue t-shirt and appears to be a teacher or a student. On the chalkboard, there are various mathematical equations and diagrams written in white chalk. The equations are arranged in a grid-like pattern, with some of them overlapping each other. The diagrams appear to be related to the concept of time-of-sight methods. The man is holding a piece of paper in his hand and seems to be writing on it.</caption></video><caption><image_72>The image shows a man standing in front of a green chalkboard. He is wearing a blue t-shirt and khaki pants and is holding a white chalk in his right hand. On the chalkboard, there are various mathematical equations written in white chalk. The equations appear to be related to the theory or line-of-sight methods. The man is writing on the board with a focused expression on his face.</caption><transcript><audio_73>outside in or i would put over here in world camera so either the cameras on the headset or</transcript><video><caption><image_74>The image shows a man standing in front of a green chalkboard. He is wearing a blue t-shirt and has a badge on his left chest. He appears to be giving a presentation or lecture. The chalkboard has various mathematical equations and diagrams written on it. The man is gesturing with his right hand as he speaks.</caption><caption><image_75>The image shows a man standing in front of a blackboard in a classroom. He is wearing a blue t-shirt and appears to be writing on the blackboard. The blackboard is green and has various mathematical equations and diagrams written on it. The equations are written in white chalk and are arranged in a grid-like pattern. The diagrams appear to be related to physics or mathematics. The man is looking down at the board with a serious expression on his face.</caption><caption><image_76>The image shows a man standing in front of a blackboard in a classroom. He is wearing a blue t-shirt and appears to be in the middle of a lesson or presentation. The blackboard is green and has various mathematical equations written on it in white chalk. The equations are written in different sizes and are arranged in a grid-like pattern. On the left side of the blackboard, there is a diagram of a circle with a line through it, and on the right side, there are two arrows pointing towards the center of the circle. The arrows are labeled "1) Visibility of the camera around the lens" and "2) On headlight inside out". The man is looking at the diagram with a focused expression on his face.</caption><caption><image_77>The image shows a man standing in front of a green chalkboard in a classroom. He is wearing a blue t-shirt and appears to be in the middle of a lesson. On the chalkboard, there are three equations written in white chalk. The first equation reads "Magnetic of EM Field" and the second equation is "2) Visibility of Camera around on handout". The third equation is a diagram of a camera with a magnifying glass hovering over it. The diagram is labeled "Inside-out" and is likely used to explain the concept of magnetic field. The man is standing with his back to the camera, looking at the equations.</caption><caption><image_78>The image shows a man standing in front of a green chalkboard. He is wearing a blue t-shirt and appears to be a teacher or a student. On the chalkboard, there are various mathematical equations and diagrams written in white chalk. The equations are written in different sizes and are arranged in a grid-like pattern. The diagrams appear to be related to the concept of magnetic field, as indicated by the title "Magnetic Field" at the top of the image. The man is standing with his back to the camera, and he seems to be deep in thought.</caption></video><transcript><audio_79>that's a very good question that's exactly what i'm covering next um that's that's the thing to be asking what is the camera going to be looking at right yeah so let me go over that what does the camera need to see for this to work we need to have line of sight or</transcript><caption><image_80>The image shows a person standing in front of a green chalkboard. The person is wearing a blue t-shirt with a logo on it and a watch on their wrist. The chalkboard is blank, with no writing or illustrations on it. The background is blurred, but it appears to be a classroom or a classroom setting. The image is taken from a low angle, looking up at the person's body.</caption><transcript><audio_81>to make these methods work it also helps to have an accurate model of how the camera projection works as well right how does the camera transform points that are in the world into image points so that's the first thing i'll mention</transcript> and this is often referred to in the industry as you have the person again wearing the headset and you have the camera out here this is what you have in the lab on the and the camera is facing the user and this is outside in or i would put over here in world camera so either the cameras on the headset or that's a very good question that's exactly what i'm covering next um that's that's the thing to be asking what is the camera going to be looking at right yeah so let me go over that what does the camera need to see for this to work we need to have line of sight or to make these methods work it also helps to have an accurate model of how the camera projection works as well right how does the camera transform points that are in the world into image points so that's the first thing i'll mention
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