Method
VipsImagescale
Declaration [src]
int
vips_scale (
VipsImage* in,
VipsImage** out,
...
)
Description [src]
Optional arguments:
log: log scale pixelsexp: exponent for log scale
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.
See also: vips_cast().
This method is not directly available to language bindings.
Parameters
out-
Type:
VipsImageOutput image.
The argument will be set by the function. The caller of the method takes ownership of the returned data, and is responsible for freeing it. ...-
Type:
NULL-terminated list of optional named arguments.