virtual L_INT LBitmap::GetMinMaxVal(puMinVal, puMaxVal, uFlags = 0)
Returns the minimum and maximum intensity values present in a 12 or 16-bit grayscale or a 48 or 64-bit color image.
Address of a variable to be updated with the minimum intensity value present in the bitmap.
Address of a variable to be updated with the maximum intensity value present 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 values can be used 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__GetMinMaxValExample()
{
L_INT nRet;
LBitmap LeadBitmap;
L_INT nLowBit, nHighBit;
L_TCHAR szDummyBuffer[50];
nRet =LeadBitmap.Load(MAKE_IMAGE_PATH(TEXT("image1.cmp ")), 16,ORDER_GRAY);
if(nRet !=SUCCESS)
return nRet;
if(
((LeadBitmap.IsGrayScale()!=GRAY_NO)&&
((LeadBitmap.LBitmapBase::GetBitsPerPixel()==12)||
(LeadBitmap.LBitmapBase::GetBitsPerPixel()==16)))
)
{
nRet =LeadBitmap.GetMinMaxVal(&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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