The Field of View (FOV) is the extend of the (for the observer) visible world
Questions tagged [fieldofview]
59 questions
1
vote
2 answers
OpenCV's Pinhole calibration model reduces FOV, should i use Fisheye?
I have a wide angle camera, the specifications say it is around 150°, but to me seems more ~100° horizontal and ~80° vertical. Anyway, once calibrated these fields of view are reduced by ~20 degrees each.
This is true for both the values returned by…
Shepard
- 801
- 3
- 9
- 17
1
vote
1 answer
ThreeJS : Calculate FOV for mesh in Orthographical Camera
So I've tried to solve this issue for a couple of hours now and can't get it to work.
I have created a mesh and viewing from above in Orthographical view.
the dimensions of the mesh is:
400 * 500
the height( is it needed?) is 300
it is placed at…
Yenza
- 440
- 5
- 19
1
vote
1 answer
scaling object to match field of view
I am overlaying some clickable hotspots on top of a proprietary panorama viewer application in flash (as3), and I need to make sure that the hotspots scale according to the changing field of view as the user zooms in / zooms out, but I'm not sure…
mheavers
- 29,530
- 58
- 194
- 315
0
votes
1 answer
How to calculate if a point in 3D space is in field of view of a camera if vertical FOV is different from horizontal FOV? (rectangualr view)
I was trying to do a calculation to test if a point in 3D space is in the view of a camera placed on specific Vector3 coordinates with specified horizontal and vertical FOV.
This is the bad example:
bool Camera::InView(const Vector3 &objpos)
{
…
skrovno_CZ
- 35
- 5
0
votes
0 answers
Reducing the FOV of VLP-16 affects it Packet Rate per second
I have recently started working on velodyne VLP-16.
I came to an understanding that VLP-16 has a standard packet rate of 754 packets/second. For 600RPM i will have 75.4 packets per revolution.
Question
Does reducing the FOV will affect my packet…
Zaid khan
- 11
- 1
0
votes
1 answer
calculation of Detection, Recognition and Identification (DRI) ranges of a camera for different objects
I want to calculate the DRI ranges of a camera using it's resolution, focal length , sensor pixel pitch and target real size. I have these values but I didn't find any equations to calculate DRI range values.
for example:
I have a camera with the…
Praneeth
- 29
- 3
0
votes
1 answer
convert angular FOV to FOV in km
I need to calculate the FOV [km].
the angular FOV is = 98 x 98° and
the distance of object is = 86km
FOV [km] = (tan(98/2) * 180 / pi) * 86
gives negative results. Where could be my error?
user13686580
0
votes
1 answer
Unity TileMap Grid problem with creating a simple fog of war
I have a procedurally generated dungeon BSP on a Tilemap Grid. a TileMap collider has been added to it.
I planned to do it simply, since my TileMap contain a SpriteRenderer, I add the color 0,0,0 to it like a black fog of war, and if I can't see it…
Shy
- 45
- 1
- 8
0
votes
1 answer
How to simulate field of view in orthographic mode?
As the title goes, how do I simulate the field of view if I'm using orthographic projection in Unity3D?
My guess is to make the speed of different layers different. So for example, the background layer will move much slower than the front layer so…
VicL
- 69
- 4
0
votes
0 answers
How can I find the accurate field of view (FOV ) of latest iPhone devices cameras?
I want to get the accurate field of view (FOV) number of the iPhone back cameras, and I found a really useful iOS Device Capture Format Specifications in this question and system API method activeFormat.videoFieldOfView.
After my practical…
LinChiSin
- 11
- 4
0
votes
1 answer
FOV of One Plus 6T?
I was wondering what the Field of View is for the rear Camera is for the One Plus 6T.
The information I've been able to gather so far but I'm not sure if the information is 100% right.
4.25mm focal length (25mm equivalent) fixed lens to 35/50mm in…
Keith347
- 3
- 2
0
votes
1 answer
How to calculate the Horizontal and Vertical FOV for the KITTI cameras from the camera intrinsic matrix?
I would like to calculate the Horizontal and Vertical field of view from the camera intrinsic matrix for the cameras used in the KITTI dataset. The reason I need the Field of view is to convert a depth map into 3D point clouds.
vrk-prgmr
- 1
- 2
0
votes
0 answers
How to solve pnp problem from single image without knowledge of camera fov?
I have a model of a object and a image of the object, and tried to align the object to the image. The camera pose and fov are not known, as the image are collect from different users and taken with different camera.
What I do now is assuming the fov…
heLomaN
- 1,634
- 2
- 22
- 33
0
votes
1 answer
Javascript scripting error
After reading up on Field of View algorithms, I decided to create one myself for a game I'm working on. After a couple of hours, I came up with the following script:
function CalculateFOV() {
ClearFOV();
map[player.x][player.y].light =…
Elliot Bonneville
- 51,872
- 23
- 96
- 123
0
votes
1 answer
Making Field of view using Raycasts With for loops (Using Unity C#)
Code:
void IdleState ()
{
RaycastHit hit;
for (float i = -ViewWidth; i < ViewWidth; i++)
{
float Iterater = i/20;
if (Physics.Raycast(transform.position, transform.forward + new…
William L
- 3
- 2