Available in LEADTOOLS Imaging Pro, Vector, Document, and Medical Imaging toolkits. |
#include "ltwrappr.h"
virtual L_INT LBitmap::ConvertUnsignedToSigned(uFlags)
L_UINT uFlags; |
/* flag */ |
Converts an unsigned bitmap to signed.
Parameter |
Description |
|
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
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. |
Win32, x64.
See Also
Functions: |
LBitmapBase::ClearNegativePixels, LBitmap::ConvertSignedToUnsigned |
Topics: |
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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; }