Version 2

How to Use

Version 1.0

Basic Use

  1. 1. Adjust Exposure and Focus
    Tap the screen to adjust exposure and focus. (Some devices do not support it.)
  2. 2. Brighter Dial Brighter Adjust Brightness (-5 to +5)
    The "Brighter Dial" on the bottom left changes brightness. A smaller value is darker and a larger value is brighter. Brightness is changed by 5% per value of 1.
  3. 3. Clearer Dial Clearer Adjust Contrast (0 to +10)
    The "Contrast (Clearer) Dial" on the bottom right changes contrast. Increase the value for more clarity.
  4. 4. Bigger Dial Bigger Adjust Magnification (1.0 to 10.0)
    The "Magnification Dial" on the bottom changes the degree of magnification. You can also change this value by pinching. You can change the maximum magnification to 20.0 times by setting the "Max Magnification x20" to ON in the Settings screen.
  5. 5. Repeat steps 2 through 4 until brightness, contrast and magnification are comfortable.
  6. 6. All dials, buttons and text disappear if you do not touch the screen for 10 seconds. You can tap the screen to display them again.

Advanced Use

  • Freeze Button Freeze Button
    Push to freeze moving images and display a still image. Push again to release. You can also make a still image bigger, brighter and clearer through use of the dials. A still image can be panned by using a panning gesture (tap and move the screen with 1 finger). You can also "Freeze" by pressing the screen long enough (long press).
  • Brightness Reverse Button Brightness Reverse Button
    Push to reverse brightness. A black letter on white background is changed to a white letter on black background. This mode is especially suitable for people with cataracts and low vision.
  • Save Button Image Save Button
    Push to store a displayed image to the "Photo Album".
  • Switch Camera/File Button Switch Camera/File Button (Android only)
    Shows the buttons which choose the image source device.
  • Switch to Rear Camera Button Switch to Rear Camera Button (Android only)
    Switch the image source to the rear camera.
  •  Switch to Front Camera Button Switch to Front Camera Button (Android only)
    Switch the image source to the front camera. A mirrored image is displayed on the screen when the front camera is used.
  •  Switch to Image File Button Switch to Image File Button (Android only)
    This button is used when show the image in the "Photo Album", "Gallery".
  • Setting Button Settings Button
    Push to access various settings (described below.)
  • Reverce Projection Transformation Button Tilted Angle Correction Button
    When you put a book on a desk and look at it from above, it is distorted like a trapezoid. This function, "Tilted Angle Correction" (Reverse Projection Transformation), revises such distortion as if you saw it from directly overhead. You can change the "Degree of Tilted Angle Correction" parameter by pinching the bottom of the screen or by using the "Degree of Tilted Angle Correction' slider in the Settings screen.

    Original

    Card - Originalopen image

    After Tilted Angle Correction

    Card - Modifiedopen image

  • Torch Button Torch Button
    Push to turn the torch light ON/OFF. (If supported.)
  • Cont. Auto Focus OFF Button Cont. Auto Focus OFF Button
    Disable continuous auto focusing and focus on the tapped area on the screen. It is convenient when using the device fixed to a stand.
  • Reset
    Double tapping the screen resets the "Bigger", "Brighter", "Clearer", "Brightness Reverse" and Pan parameters to their initial conditions. Shaking your device also release freeze condition in addition to the above.

Settings Screen

Android

Setting Screenopen image

You can change various settings in the Settings Screen.
  • Monochrome Mode
    • Discard Color Information
      Discards Chromaticity Information and only uses Lightness information. Readability for an individual who cannot read easily due to eye illness, etc. may improve with this setup. (default value: OFF)
    • Color(s) Used
      Specifies the color(s) used for the "Monochrome" (or "Duochrome") mode. The specified color or combination of colors (chromaticity information only) is used.
      For example, in the case that one color is specified (Monochrome), such as "Light Blue", colors which have the same chromaticity as "Light Blue" are displayed. In the case that two colors are specified (Duochrome), such as "Yellow and Blue", a color which has the same chromaticity as Yellow is displayed when the Lightness value is at its highest, and a color which has same chromaticity as Blue is displayed when the Lightness value is at its lowest (dark). A color's chromaticity is determined by the linear interpolation between light and dark according to its own Lightness.
      In addition, "Color(s) Used" can be shifted to the next color(s) by tapping the screen with 2 fingers when the "Shift by double-tapping w/ 2 fingers" is ON. (default: Achromatic)
    • Custom Color
      Specifies the color used for the "Custom (Monochrome)" mode (only chromaticity is used). (default value: Yellowish Green (R 66%, G 100%, B 0%))
    • Custom Color (Light)
      Specifies the Light Color used for the "Custom (Duochrome)" mode (only chromaticity is used). (default value: Yellow (R 100%, G 100%, B 0%))
    • Custom Color (Dark)
      Specifies the Dark Color used for the "Custom (Duochrome)" mode (only chromaticity is used). (Choose "White Color" when you would like to use Achromatic.) (default value: Purple (R 50%, G 0%, B 100%))
    • Shift by double-tapping w/ 2 fingers
      Shift the "Color(s) Used" to the next color(s) in the order listed in the menu by tapping the screen with 2 fingers.
  • User Interface Settings
    • Big Text and Buttons
      Use Big Text and Buttons. (default value: OFF, but ON on iPad)
    • Freeze on Long Press
      Freeze by pressing the screen with your finger for a long enough time (long press), in addition to the "Freeze Button." (default value: ON)
    • Save on Volume
      Save the screen by pushing the "Volume" button in addition to the "Save Button." (default value: OFF)
    • Max Magnification x20
      Sets the maximum magnification ratio to 20x. (Normally 10x) (default value: OFF)
    • Cont. Auto Focus OFF (Some devices do not support it.)
      Disable continuous auto focusing. This is helpful when using a device with a stand. (default value: OFF)
  • Degree of Tilted Angle Correction
    Adjust the degree of correction for the "Tilted Angle Correction". This parameter is used when the "Tilted Angle Correction" is ON. The effect is weaker when the slider is moved left, and stronger when the slider is moved right. The "Degree of Tilted Angle Correction" can also be adjusted by pinching an area at the bottom of the screen with 2 fingers, when "Tilted Angle Correction" is ON. (Possible range: Trapezoid (lower base)/(raised bottom) = 0.2-1.0) (default value: 0.5)
  • Reset
    Resets all parameters in the Settings screen to their initial conditions.
  • How to Use
    Shows manual.
  • Application Information
    Shows Application Information.

Gestures

  • 1 Finger Tap
    When not "Freezing", the focus and exposure are adjusted at the tapped location. (Some devices do not support it.)
    Re-displays U/I parts (dials, buttons and statuses) when they are hidden. (more than 10 seconds have passed since the last operation.)
  • 1 Finger Double Tap
    Resets the "Bigger", "Brighter", "Clearer", "Brightness Reverse" and Pan parameters to their initial conditions.
  • 1 Finger Pan
    When "Freezing", Pan in the direction you moved your finger.
  • 1 Finger Long Press
    When not "Freezing", freeze. When "freezing", release.
  • 2 Fingers Double Tap
    Shift the "Color(s) Used" to the next color(s) in the order listed in the menu when "Shift by double-tapping w/ 2 fingers" is ON.
  • 2 Fingers Pinch
    Zoom in or out. It is the same as operating the "Magnification Dial".
  • 2 Fingers Pinch on the bottom of screen
    Increase or decrease "Degree of Tilted Angle Correction" when "Tilted Angle Correction" is ON.
  • Shake
    Resets the "Bigger", "Brighter", "Clearer", "Brightness Reverse" and Pan parameters to their initial conditions, and release "Freezing".

Troubleshooting

  • Can not save the screen image even push the "Image Save Button" ?
    You should be able to give a permission. For iOS, turn it on via Settings > Privacy > Photos > "Brighter abd Bigger". For Android, please allow access to "Storage" permission as well.

Notes

  • iOS version - Powered by InAppSettingsKit, Copyright © Luc Vandal and Ortwin Gentz (BSD license).
  • iOS version - Powered by Color Picker for iOS, Copyright © Ryota Hayashi (New BSD license).
  • Android version - Powered by NumberPicker, Copyright © 2018 ShawnLin013 (MIT license).