ImageEn, unit imageenview
TImageEnView.ChangeResolution
TImageEnView
.ChangeResolution
Declaration
procedure ChangeResolution(NewDPI: Integer; ResampleFilter:
TResampleFilter
);
Description
Modifies the DPI of the image (
IO.Params.DpiX
and
IO.Params.DpiY
), resampling it and setting the new DPI values.
Note: You should ensure the source DPI contains valid values before calling ChangeResolution. This method has no effect if DPI is 0.
Example
// load input.jpg which has 100 dpi
ImageEnView1.IO.LoadFromFile('C:\input.jpg');
// we want 75 dpi
ImageEnView1.ChangeResolution(75, rfTriangle);
// save back as 75 dpi
ImageEnView1.IO.SaveToFile('C:\output.jpg');
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