Vips.Image.radload (original) (raw)

Constructor

Vips Imageradload

Declaration [src]


int
vips_radload (
  const char* filename,
  VipsImage** out,
  ...
)

Description [src]

Read a Radiance (HDR) file into a VIPS image.

Radiance files are read as VIPS_CODING_RAD. They have one byte for each of red, green and blue, and one byte of shared exponent. Some operations (likevips_extract_area()) can work directly with images in this format, but mmany (all the arithmetic operations, for example) will not. UnpackVIPS_CODING_RAD images to 3 band float with vips_rad2float() if you want to do arithmetic on them.

This operation ignores some header fields, like VIEW and DATE. It will not rotate/flip as the FORMAT string asks.

Sections of this reader from Greg Ward and Radiance with kind permission.

This constructor is not directly available to language bindings.

Parameters

filename

Type: const char*

File to load.

The data is owned by the caller of the function.
The value is a NUL terminated UTF-8 string.

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.

Vips.Image.radload (original) (raw)

Constructor