L_GetLinearVOILUT
#include "l_bitmap.h"
L_INT EXT_FUNCTION L_GetLinearVOILUT(pBitmap, pCenter, pWidth, uFlags);
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pBITMAPHANDLE pBitmap; |
/* pointer to the bitmap handle */ |
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/* pointer to a variable to be updated */ | |
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/* pointer to a variable to be updated */ | |
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L_UINT uFlags; |
/* flags */ |
Gets the window center and the window width, if the LUT stored inside pBitmap is linear. If the LUT stored inside pBitmap is not linear, the function will fail.
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Parameter |
Description |
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pBitmap |
Pointer to the bitmap handle referencing the bitmap. |
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pCenter |
Pointer to a variable to be updated with the center of the range of color intensities that define your window of interest, if the LUT is linear. Cannot be NULL. |
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pWidth |
Pointer to a variable to be updated with the range of color intensities that define your window of interest, if the LUT is linear. Cannot be NULL. |
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uFlags |
Reserved for future use. Pass 0 for now. |
Returns
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SUCCESS |
LUT is Linear (success). |
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0 |
LUT is not linear (fail). |
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<0 |
An error occurred. Refer to Return Codes. |
Comments
You have to pay attention to your signed images LUT. The upper half should contain negative values and lower half contains positive values.
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.
Required DLLs and Libraries
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LTIMG 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
Windows 95 / 98 / Me, Windows 2000 / XP.
See Also
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Functions: |
L_WindowLevel, L_WindowLevelFillLUT, L_GetUserLookupTable, L_RemapBitmapIntensity, L_ApplyLinearVOILUT |
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Topics: |
Example
/* check the linearity of the LUT and computes its window width and center by using L_GetLinearVOILUT function.*/
L_INT TestFunction(pBITMAPHANDLE pBitmap, L_DOUBLE * pCenter, L_DOUBLE *pWidth)
{
return L_GetLinearVOILUT (pBitmap, pCenter, pWidth, 0);
}