Enumeration
GdkPixbufInterpType
Description [src]
Interpolation modes for scaling functions.
The GDK_INTERP_NEAREST mode is the fastest scaling method, but has
horrible quality when scaling down; GDK_INTERP_BILINEAR is the best
choice if you aren’t sure what to choose, it has a good speed/quality balance.
Note: Cubic filtering is missing from the list; hyperbolic interpolation is just as fast and results in higher quality.
Members
| Name | Description |
|---|---|
GDK_INTERP_NEAREST |
Nearest neighbor sampling; this is the fastest and lowest quality mode. Quality is normally unacceptable when scaling down, but may be OK when scaling up. |
GDK_INTERP_TILES |
This is an accurate simulation of the PostScript image operator without any interpolation enabled. Each pixel is rendered as a tiny parallelogram of solid color, the edges of which are implemented with antialiasing. It resembles nearest neighbor for enlargement, and bilinear for reduction. |
GDK_INTERP_BILINEAR |
Best quality/speed balance; use this mode by default. Bilinear interpolation. For enlargement, it is equivalent to point-sampling the ideal bilinear-interpolated image. For reduction, it is equivalent to laying down small tiles and integrating over the coverage area. |
GDK_INTERP_HYPER |
This is the slowest and highest quality
reconstruction function. It is derived from the hyperbolic filters in
Wolberg’s “Digital Image Warping”, and is formally defined as the
hyperbolic-filter sampling the ideal hyperbolic-filter interpolated
image (the filter is designed to be idempotent for 1:1 pixel mapping).
Deprecated: this interpolation filter is deprecated, as in reality
it has a lower quality than the |