deadpixelremoval

Syntax: deadpixelremoval(image, radius, magnitude)

Removes dead pixels from projection dataset.Determines whether dead pixel removal algorithm should be applied to the projection images. In the algorithm, each flat-field corrected projection \(I\) is processed separately. Pixel at position \(x\) is classified as dead if its value \(I(x)\) is \(NaN\) or it satisfies \(|I(x) - m(x)| > M * std(|I - m|)\), where \(m\) is a median filtering of \(I\) with user-specified radius, \(M\) is a magnitude parameter, and \(std\) is standard deviation of whole image. If a pixel is dead, its value is replaced by \(m(x)\), otherwise the value is left unchanged.

This command cannot be used in the distributed processing mode. If you need it, please contact the authors.

Arguments

image [input & output]

Data type: uint8 image, uint16 image, uint32 image, uint64 image, int8 image, int16 image, int32 image, int64 image, float32 image

Image to process.

radius [input]

Data type: positive integer

Default value: 1

Median filtering radius.

magnitude [input]

Data type: real

Default value: 10

Magnitude parameter \(M\).

See also

fbppreprocess, fbp