radius: The radius of the Gaussian, in pixels, not counting the center pixel (default 0).
sigma: The standard deviation of the Gaussian, in pixels (default 1.0).
amount: The fraction of the difference between the original and the blur image that is added back into the original (default 1.0).
threshold: The threshold, as a fraction of QuantumRange, needed to apply the difference amount (default 0.05).
exemple pour la saturation=
convert -modulate 100,150,100 image.jpg image+sat.jpg
# saturation et netteté par convert d'imagemagick
Posté par robertix . En réponse au message relief en anaglyphe. Évalué à -1.
on peut utiliser la commande convert
exemple pour la nettification=
convert -unsharp ×ばつ1.2+5+0 image.jpg image+net.jpg
explication:
-unsharp radiusxsigma{+amount}{+threshold}
radius: The radius of the Gaussian, in pixels, not counting the center pixel (default 0).
sigma: The standard deviation of the Gaussian, in pixels (default 1.0).
amount: The fraction of the difference between the original and the blur image that is added back into the original (default 1.0).
threshold: The threshold, as a fraction of QuantumRange, needed to apply the difference amount (default 0.05).
exemple pour la saturation=
convert -modulate 100,150,100 image.jpg image+sat.jpg
le 150 c'est +50% de saturation des couleurs