PngFilterMode PngFilterMode PngFilterMode PngFilterMode Enum

Definition

Specifies the filter used to optimize the image prior to image compression in PNG images.

public : enum class PngFilterMode
public enum PngFilterMode
Public Enum PngFilterMode
var value = Windows.Graphics.Imaging.PngFilterMode.adaptive;
Attributes
Windows 10 requirements
Device family
Windows 10 (introduced v10.0.10240.0)
API contract
Windows.Foundation.UniversalApiContract (introduced v1)

Fields

Adaptive Adaptive Adaptive Adaptive

The Adaptive type filter is applied.

Automatic Automatic Automatic Automatic

The filter type will be chosen automatically.

Average Average Average Average

The Average type filter is applied.

None None None None

The image is unmodified.

Paeth Paeth Paeth Paeth

The Paeth type filter is applied.

Sub Sub Sub Sub

The Sub type filter is applied.

Up Up Up Up

The Up filter type is applied.

Remarks

The PNG filter modes only affect compression efficiency and not image quality. None does not perform any filtering and is typically the fastest but consumes the most space. Sub, Up, Average and Paeth filtering perform differently across various images. Adaptive filtering attempts to select the most efficient of the previous filter modes for each scanline in the image. This typically performs the slowest but consumes the least space.