Syntax
| Visual Basic (Declaration) | |
|---|---|
Public Function IsBlankImage() As Boolean | |
| Visual Basic (Usage) |  Copy Code |
|---|---|
| |
| C# | |
|---|---|
public bool IsBlankImage() | |
| Managed Extensions for C++ | |
|---|---|
public: bool IsBlankImage(); | |
| C++/CLI | |
|---|---|
public: bool IsBlankImage(); | |
Remarks
Blank pages normally occur in duplex scanning when both sides of the page are scanned.
Image is not blank if it has black pixels after ignoring the following image elements:
Margins – Black pixels inside the following margin
- for sides larger than 7 inches the margin will be 1 inch
- for sides between 5 and 7 inches the margin will be 0.5 inch
- for smaller sides there will be no margin
Noise - Speckles of 5x5 pixels and smaller
Object – Single object smaller than 0.5 x 0.5 inch in size
Image should have correct values for vertical and horizontal resolution for proper calculations of margins and object size.
Licensing: Requires ClearImage Repair license
Image is not blank if it has black pixels after ignoring the following image elements:
Margins – Black pixels inside the following margin
- for sides larger than 7 inches the margin will be 1 inch
- for sides between 5 and 7 inches the margin will be 0.5 inch
- for smaller sides there will be no margin
Noise - Speckles of 5x5 pixels and smaller
Object – Single object smaller than 0.5 x 0.5 inch in size
Image should have correct values for vertical and horizontal resolution for proper calculations of margins and object size.
Licensing: Requires ClearImage Repair license