About the Encoder property
The Encoder property contains the indications about the quality compromise to accept when encoding image to final format.
This object allows specifying two properties: a quality measure and a lower threshold for the quality measure.
Admisible values for quality measure are:
- `default`: Let's our platform select a default measure
- `ssim`: Structural Similarity Index.
- `fsim-c`: Phase congruency image similarity measure.
- `asymmetric-fsym-c`: A modification of fsim-c that gives less
weight to compression artifacts in uniform-color backgrounds.
- `perceptual-sc`: A simple neural-network approach
that tries to mimic the human capability to notice image
compression artifacts.
Admisible values for the quality measure is a number between 0.25
and 1.00
. The The encoder will try to produce the smallest image whose quality (as defined by the quality measure) is above this quality threshold.