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Camera field of view

April 20, 2013 - 9:49pm #1

Hi.

 

playing with the vuforia sdk on ipad2 and ipad4 I noticed that the field of view of the camera is narrower in comparison with   Normal camera operation ( such in any camera/video application) 

is there a way to control the  width of  the field of view through the sdk?

 

thanks

ozi

Camera field of view

September 29, 2015 - 8:36am #5

It sounds like this issue is already answered here:

https://developer.vuforia.com/forum/ios/sdk-version-3-0-5-retina-resolution-problem

 

Camera field of view

September 29, 2015 - 5:20am #4

Why is this post not going to front page? It's still on page 31...

Should I start a new post?...

Hope this bump works...

Camera field of view

September 23, 2015 - 3:11am #3

Hello there,

I dig up this thread, because I face similar problems. I did tests on several devices: iPad mini 2, iPad 4 and iPad 5. When comes to filming, it seems that the video is zoomed for iPad 4 and 5.

I did a simple test: I opened the camera app on every device and compared what's on screens. The result is the same for the three devices: When using video mode, the picture is zoomed. (see difference in the attached files, screenshots taken at the same distance of the target). And it's not an insignificant zoom!

When in the app using vuforia with Unity on iPad mini2, the camera 'zoom' used is the photo mode one.

On iPad 4 and 5 the camera 'zoom' used is the video mode one. This results in the distance you need to have between you and the marker. I have to be really far from it which is bad when you are in a restricted room and also it makes the trembling stronger.

 

How or Can I specify the app to use the camera mode I want? This is very annoying for my clients who don't have the same results on their devices.

Thank you.

Antoine DELHOMMEAU.

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Image icon CameraPhotoMode.jpg443.19 KB
Image icon CameraVideoMode.jpg371.18 KB

Camera field of view

April 22, 2013 - 2:50am #2

Hi ozieg,

this is probably due to the fact that the Vuforia samples do configure the videobackground in such a way to fit the entire screen;

and since the aspect ratio of the camera video frame is usually different from the screen aspect ratio, this results in having part of the camera view rendered beyond the screen borders (i.e. only a portion of the camera view is covering the screen, the rest is outside the screen).

In the sample code you should find a fucntion called configureVideobackground(); you can play with the code there if you want to render the video background  differently.

 

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