virtual L_INT LBitmap::GetMinMaxBits(pnLowBit, pnHighBit, uFlags = 0)
Returns the low and high bits of the values present in a 12 or 16-bit grayscale and 48 and 64-bit image.
Address of a variable to be updated with the lowest bit set in the bitmap.
Address of a variable to be updated with the highest bit set in the bitmap.
Reserved for future use. Must be 0.
Value | Meaning |
---|---|
SUCCESS | The function was successful. |
< 1 | An error occurred. Refer to Return Codes. |
The minimum and maximum bit values can be used to specify the range of useful bits and to create a lookup table, for use in LBitmap::WindowLevel or LBitmap::WindowLevelBitmap.
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 supports signed data images.
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.
Win32, x64.
L_INT LBitmap__GetMinMaxBitsExample()
{
L_INT nRet;
LBitmap LeadBitmap;
L_INT nLowBit, nHighBit;
L_TCHAR szDummyBuffer[50];
nRet =LeadBitmap.Load(MAKE_IMAGE_PATH(TEXT("clean.tif")), 16,ORDER_GRAY);
if(nRet !=SUCCESS)
return nRet;
if(
((LeadBitmap.IsGrayScale()!=GRAY_NO)&&
((LeadBitmap.GetBitsPerPixel ()==12)||
(LeadBitmap.GetBitsPerPixel()==16)))
)
{
nRet =LeadBitmap.GetMinMaxBits(&nLowBit, &nHighBit);
if(nRet !=SUCCESS)
return nRet;
wsprintf(szDummyBuffer, TEXT("LowBit= %d\tHighBit= %d"), nLowBit, nHighBit);
MessageBox(NULL, szDummyBuffer, TEXT("GetMinMaxBits"), MB_OK);
}
else
{
MessageBox(NULL, TEXT("Not a (12 or 16) gray scale image."), TEXT("GetMinMaxBits"), MB_OK);
return FAILURE;
}
return SUCCESS;
}
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