Method
VipsImagescale
Declaration [src]
int
vips_scale (
VipsImage* in,
VipsImage** out,
...
)
Description [src]
Search the image for the maximum and minimum value, then return the image as unsigned 8-bit, scaled so that the maximum value is 255 and the minimum is zero.
If log is set, transform with log10(1.0 + pow(x, exp)) + .5,
then scale so max == 255. By default, exp is 0.25.
::: tip “Optional arguments”
* log: gboolean, log scale pixels
* exp: gdouble, exponent for log scale
::: seealso
vips_cast().
Parameters
out |
VipsImage |
Output image. |
|
| The argument will be set by the function. | |
| The instance takes ownership of the data, and is responsible for freeing it. | |
... |
none |
|