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	You are here: Start » Filter Reference » OpenCV » Image Filtering » cvGaussianBlur
| Module: | OpenCV | 
|---|
Smoothes image using a Gaussian filter.
| Name | Type | Range | Description | |
|---|---|---|---|---|
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				inSrc | Image | Source image. | |
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				inKWidth | Integer | 1 - ![]()  | 
				Gaussian kernel width. It must be positive and odd. Or if both kernel dimensions are zero's, it is computed from sigma. | 
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				inKHeight | Integer | 1 - ![]()  | 
				Gaussian kernel height. It must be positive and odd. Or if both kernel dimensions are zero's, it is computed from sigma. | 
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				inSigmaX | Real | Gaussian kernel standard deviation in X direction. | |
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				inSigmaY | Real | Gaussian kernel standard deviation in Y direction. If sigmaY is zero, it is set to be equal to sigmaX. If both sigmas are zeros, they are computed from ksize.width and ksize.height, respectively. | |
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				inBorderType | CvBorderType | Pixel extrapolation method. | |
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				outDst | Image | Output image. | |
Errors
This filter can throw an exception to report error. Read how to deal with errors in Error Handling.
List of possible exceptions:
| Error type | Description | 
|---|---|
| DomainError | inKWidth and inKHeight both must be positive and odd in cvGaussianBlur | 
| DomainError | Input image must have pixel type different from Int8 and Int32 in cvGaussianBlur. | 
| DomainError | Input image must not be empty in cvGaussianBlur. | 
Complexity Level
This filter is available on Basic Complexity Level.

 Basic

