8.22. Amplia l’HSV

The Stretch HSV command does the same thing as the Stretch Contrast command, except that it works in HSV color space, rather than RGB color space, and it preserves the Hue. Thus, it independently stretches the ranges of the Hue, Saturation and Value components of the colors. Occasionally the results are good, often they are a bit odd. «Stretch HSV» operates on layers from RGB and Indexed images. If the image is Grayscale, the menu entry is insensitive and grayed out.

8.22.1. Activa l'ordre

  • You can access this command from the image menubar through ColorsAutoStretch HSV.

8.22.2. Exemple d’«Amplia l’HSV»

Figura 16.182. Imatge original

Imatge original

La capa activa i els histogrames vermell, verd i blau abans del tractament.


Figura 16.183. Imatge després de l'ordre

Imatge després de l'ordre

La capa activa després del tractament. El contrast, la lluminositat i els tons s'accentuen.