LBitmap::ConvertUnsignedToSigned (original) (raw)
Summary
Converts an unsigned bitmap to signed.
Syntax
#include "ltwrappr.h"
virtual L_INT LBitmap::ConvertUnsignedToSigned(uFlags)
Parameters
L_UINT uFlags
Flag that indicates how to process bits outside the low bit to high bit range. Possible values are:
| Value | Meaning |
|---|---|
| PROCESS_RANGE_ONLY | [0x0001] Shift data by adding half the range to each pixel without changing bits outside the (LowBit-HighBit) range. |
| PROCESS_OUTSIDE_RANGE | [0x0002] Shift data by adding half the range to each pixel and set to zero all bits outside the (LowBit-HighBit) range. |
Returns
| Value | Meaning |
|---|---|
| SUCCESS | The function was successful. |
| < 1 | An error occurred. Refer to Return Codes. |
Comments
This function updates MaxVal and MinVal different values with new values that consider bitmap new sign. Also LBitmapBase::IsPixelsSigned() value will be set to one.
This function supports 12 and 16-bit grayscale images. Support for 12 and 16-bit grayscale images is available only in the Document/Medical toolkits.
This function does not support 32-bit grayscale images. It returns the error code ERROR_GRAY32_UNSUPPORTED if a 32-bit grayscale image is passed to this function.
Required DLLs and Libraries
- LTIMGCOR
- For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.
Platforms
Win32, x64.
See Also
Functions
Topics
Example
L_INT LBitmap__ConvertUnsignedToSignedExample(LBitmap * plBitmap)
{
L_INT nRet;
/* convert bitmap to signed */
if(!plBitmap->IsPixelsSigned() )
{
nRet =plBitmap->ConvertUnsignedToSigned(PROCESS_RANGE_ONLY);
if(nRet !=SUCCESS)
return nRet;
}
else
return FAILURE;
return SUCCESS;
}
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