Low contrast object not found!
Adjust ambient lighting or recalibrate display
Select "Retry" to move the object and try again
Select "Cancel" to close this message
pacsDisplay Ambient Light Verification
Please ensure the following:
Ambient lighting set to reading levels
- Close/cover nearby windows
- Reduce overhead lighting
- Avoid lights reflecting on the display
HOW TO USE:
- A low contrast bar pattern object is randomly positioned on the display
- Try to locate and click on the object
- If you click correctly: Success message appears
- If you miss: Failure message appears
CONTROLS:
- Click "Move" to reposition the object
- Up Arrow: increase contrast
- Down Arrow: decrease contrast
- Left/Right Arrow: shift base level (background + object together)
- Left-click the contrast display to increase contrast
- Right-click the contrast display to decrease contrast
- Shift+left-click anywhere: increase contrast
- Alt+left-click anywhere: shift base level up
- Alt+right-click anywhere: shift base level down
PATTERN DETAILS:
- Bar pattern: 6-pixel vertical period
- Initial contrast: 3 gray levels (out of 255)
- Object size: 102x102 pixels
URL PARAMETERS:
Customize the test by adding parameters to the URL:
?contrast=N
- Set initial gray level (0-255) [default: 3]
- Example: ambtest.html?contrast=10
?lockcontrast (or ?lock)
- Prevent users from changing contrast
- Shows lock icon (🔒) next to contrast display
- Example: ambtest.html?lockcontrast
?email=address@example.com
- Enable email sharing of results
- Adds "Share Results" button to success/failure dialogs
- Opens email with detailed test report
- Example: ambtest.html?email=admin@company.com
COMBINED EXAMPLES:
- ambtest.html?contrast=5&lock&email=test@example.com
- ambtest.html?contrast=20&lockcontrast
- ambtest.html?email=results@company.com
Ambient Luminance Settings Test
Please ensure the following:
Ambient lighting set to reading levels
- Close/cover nearby windows
- Reduce overhead lighting
- Avoid lights reflecting on the display