Smooths or blurs an image by applying a Gaussian filter to the specified bitmap.
L_LTIMGEFX_API L_INT L_GaussianFilterBitmap(pBitmap, nRadius, uFlags)
Pointer to a bitmap handle that references the bitmap to process with the Gaussian filter.
Value that indicates the radius of the neighborhood on which the filter is applied.
Reserved for future use. Must be 0.
|SUCCESS||The function was successful.|
|< 1||An error occurred. Refer to Return Codes.|
Each pixel in the bitmap is blurred based on neighborhood pixels. The parameter nRadius determines the size of the neighborhood to consider when blurring a pixel. The result is a blurred version of the original image.
The amount of blur is controlled by specifying the size of the neighborhood used for blurring or smoothing. The value of the
nRadius parameter determines the size and values of the mask.
To update a status bar or detect a user interrupt during execution of this function, refer to L_SetStatusCallback.
This function supports 12 and 16-bit grayscale and 48 and 64-bit color images. Support for 12 and 16-bit grayscale and 48 and 64-bit color images is available in the Document and Medical Imaging 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.
Gaussian Filter Function - Before
Gaussian Filter Function - After
View additional platform support for this Gaussian Filter function.
Win32, x64, Linux.
This example loads a bitmap and applies the Gaussian filter
nRet = L_LoadBitmap (MAKE_IMAGE_PATH(TEXT("IMAGE1.CMP")), &LeadBitmap, sizeof(BITMAPHANDLE), 0, ORDER_BGR, NULL, NULL);
nRet = L_GaussianFilterBitmap (&LeadBitmap, 20, 0);
nRet = L_SaveBitmap(MAKE_IMAGE_PATH(TEXT("Result.BMP")), &LeadBitmap, FILE_BMP, 24, 0, NULL);
Medical Web Viewer .NET
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C API/C++ Class Libraries