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Image gradients with Gaussian smoothing 1.0

  Date Added: June 14, 2013  |  Visits: 206

Image gradients with Gaussian smoothing

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Carries out Gaussian smoothing followed by differencing as a way of estimating the gradients of a grey-level image in the X and Y directions. This is the initial stage of the well-known Canny edge detector, but the gradients can be used for many other applications.The function offers independent control of the smoothing parameters.Particular care is taken of how pixels close to the image boundaries are treated. By default, the output gradient arrays are smaller than the image so that only valid values need be computed, but an option allows them to be the same size as the image. Values close to the boundaries are then computed by extrapolation of the image using reflection or tiling.The zip file includes a separate function, gsmooth2, that carries out Gaussian smoothing, and the convenience function exindex that simplifies extrapolation.

Requirements: No special requirements
Platforms: Matlab
Keyword: Arrays Boundaries Computed Default Gradient Option Smaller Treated Valid Values
Users rating: 0/10

License: Shareware Size: 10 KB
IMAGE GRADIENTS WITH GAUSSIAN SMOOTHING RELATED
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