Vips.Image.identity (original) (raw)
Constructor
VipsImageidentity
Declaration [src]
int
vips_identity (
VipsImage** out,
...
)
Description [src]
Creates an identity lookup table, ie. one which will leave an image unchanged when applied with vips_maplut(). Each entry in the table has a value equal to its position.
Use the arithmetic operations on these tables to make LUTs representing arbitrary functions.
Normally LUTs are 8-bit. Set ushort to create a 16-bit table.
Normally 16-bit tables have 65536 entries. You can set this smaller withsize.
Optional arguments
bands:gint, number of bands to createushort:gboolean,TRUEfor an unsigned short identitysize:gint, number of LUT elements for a ushort image
This constructor is not directly available to language bindings.
Parameters
out
Type: VipsImage
Output image.
| The argument will be set by the function. |
|---|
| The caller of the function takes ownership of the returned data, and is responsible for freeing it. |
...
Type: ``
NULL-terminated list of optional named arguments.
Return value
Type: int
0 on success, -1 on error.