DicomObjects supports smoothing of displayed images, controlled by the MagnificationMode and MinificationMode properties of the image. Whilst using these produces a more visually pleasing image, it does not actually add to the "value" of an image, and does have a performance penalty, so developers are advised to disable these features whilst windowing_and_scrolling etc. by setting both to doFilterReplicate

There are two independent properties which control such smoothing in DicomObjects:

MinificationMode

Controls the smoothing where ActualZoom is <1

MagnificationMode

Controls the smoothing where ActualZoom is >1

Allowable values for MinificationMode

doFilterDefault 

equal to doFilterMovingAverage

doFilterReplicate

Simply subsample (fast, but totally omits many pixels)

doFilterMovingAverage

Applies a linear kernel, depending on value of Filterlength

Allowable values for MagnificationMode

doFilterDefault 

equalt to doFilteReplicate ( note : different to the behaviour for MinificationMode)

doFilterReplicate

Simply replicate as needed (fast and safe, but some users dislike the "pixelation")

doFilterBSline

Applies a B-Spline kernel

doFilterCubicSline

Applies a Cubic-Spline kernel, using the CubisSplineAlpha property to define the sharpness