Removes the salt and pepper noise from the specified bitmap.
|SUCCESS||The function was successful.|
|< 1||An error occurred. Refer to Return Codes.|
This function works only on 8-bit images. It removes salt (pixels having a value of 255) and pepper (pixels having a value of 0) and replaces them with the median value of the non-noisy pixels around them.
This function does not support signed data images. It returns the error code ERROR_SIGNED_DATA_NOT_SUPPORTED if a signed data image is passed to this function.
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.
To update a status bar or detect a user interrupt during execution of this function, refer to LBase::EnableStatusCallback.
Salt and Pepper Removal Function - Before
Salt and Pepper Removal Function - After
View additional platform support for this Salt and Pepper Removal function.
This example loads a bitmap and removes the salt and pepper noise from it (check the before and after images, and focus on the area in the middle).
#if defined (LEADTOOLS_V19_OR_LATER)
nRet = LeadBitmap.Load(MAKE_IMAGE_PATH(TEXT("cannon_noisy.png")), 0, ORDER_BGR);
if (nRet != SUCCESS)
/* Apply filter */
nRet = LeadBitmap.RemoveSaltPepperNoise();
if (nRet == SUCCESS)
nRet = LeadBitmap.Save(MAKE_IMAGE_PATH(TEXT("Result.BMP")), FILE_BMP, 24, 0, NULL);
#endif // LEADTOOLS_V19_OR_LATER
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