FAQ

 

Q:     What is the best video mode to use for reading? 

A:  

SmartText – this video mode is best suited for reading text and adaptively adjusts the contrast on a pixel by pixel basis.   It performs best on a faster newer Apple iPhones and iPads.

Highlights – this is a high contrast video mode and enables the user to choose a colour scheme that provides the best color contrast for reading.   This is often referred to as “false color” video magnification.

 

Q:     What is the best device to use VisionAssist on?

A:     The best device is the one that is most convenient as you always have it with you!   Some people prefer to use iPhone or iPod Touch as it is easy to carry with you all the time.  Others prefer the large screen of the iPad. Technically, you will get the best image quality from the devices that have the best quality cameras and the fastest CPU.  An iPhone 5 or better, or an iPad Air or better is recommended.

 

Q:     Help, VisionAssist only shows a blank screen!

A:     From iOS8 onwards Apple includes new Privacy features.  If for some reason the VisionAssist screen is blank, please check that VisionAssist can access your camera by reviewing Settings -> Privacy -> Camera -> VisionAssist.   Sometimes after an iOS upgrade the privacy settings get reset.

 

Q:     Does VisionAssist support VoiceOver accessibility?

A:     VoiceOver is fully supported from v1.2.

 

Q:     Why does the image blur when I move my smartphone?

A:     Sometimes the image can blur when you move the smartphone.   This can happen on older smartphones with lower speed CPUs.   One technique can be to capture the entire image, press pause, then pan the image, adjust colour scheme, etc.

 

Q:     Why are my zoomed images not very sharp?

A:     The sharpness is limited by the video camera capability of your Apple device.     Typically, newer devices provide the highest resolution and sharpest images. 

 

Q:     I can't see anything on screen!

A:     Be careful that your fingers are not covering the camera lens.  This is easy to do with Apple devices as the cameras are near the corner.

 

Q:     What does the threshold slider do?

A:     The threshold slider changes the contrast and brightness of the current display mode for color and B&W video modes. For Highlights mode it changes the threshold for what is displayed.

 

Q:     Why can't I adjust the threshold on Smart text?

A:     Smart text uses our advanced algorithms to highlight and enhance text particularly on uneven backgrounds.  Thresholding happens automatically.

 

Q:     How do I change to Black on White video mode?

A:     White text on Black is one of the "Highlights" modes.  Follow these steps:

Select "Settings" (the gears in the top right hand corner).

Ensure that "Highlights" is enabled.

In the section "Highlights mode colors" select the second button from the left.  White text on Black.

Select Done.

Cycle (bottom left hand button) through the display modes until it says Highlights.   It should now be White text on Black.

 

Q:     Why can't I use the torch capability?

A:     Only models with LEDs used as flashes have torch mode.

 

Q:     What is the best way to use VisionAssist with a big screen?

A:     The simplest way is to connect a Lightning Digital AV Adapter (available from Apple stores) from your iPhone or iPad to your monitor using a HDMI cable.

If you have an AppleTV, you can also use AirPlay Mirroring to duplicate the iPhone or iPad display over your WiFi network.

 

Q:     How do I use AirPlay streaming to AppleTV?

A:     You need to enable AirPlay mirroring on your device.  Please refer to the instructions on Apple's website here:    http://support.apple.com/kb/TS4085