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Any way to change iOS camera settings?

January 31, 2018 - 3:16pm #1

The camera image when captured through Vuforia is cropped compared to an image taken from the same vantage point through the system camera app; that crop factor appears to be nearly identical to what would happen when the 4:3 image is cropped to 16:9, then cropped again back to 4:3 when running on iPad (our target platform). This is fairly unfortunate; presumably Vuforia is requesting a 16:9 format image from the camera, and then cropping it again to fill the screen.

Is it possible to set Vuforia to request a different resolution from the camera, ideally with an aspect that matches the display? Or, barring that, in the app we're developing we are fine with getting a "letterbox" effect (as that area is covered over by our own UI anyway) and we just need as much horizontal resolution as possible; can we configure Vuforia to shrink-to-fit the image (with letterboxing) rather than crop-to-fit?

Thanks.

Any way to change iOS camera settings?

January 31, 2018 - 3:40pm #2

Okay, so, I did figure out how to configure letterboxing, by changing the camera's viewport (instead of being 1x1 it is now 1x0.75 with a Y offset of 0.125, which simulates letterboxing a 16:9 image to 4:3). This is at least workable for us, although it would be better if we could get the full 4:3 frame.

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