Method

VipsImageshrinkh

Declaration [src]

int
vips_shrinkh (
  VipsImage* in,
  VipsImage** out,
  int hshrink,
  ...
)

Description [src]

Optional arguments:

  • ceil: round-up output dimensions

Shrink in horizontally by an integer factor. Each pixel in the output is the average of the corresponding line of hshrink pixels in the input.

This is a very low-level operation: see vips_resize() for a more convenient way to resize images.

This operation does not change xres or yres. The image resolution needs to be updated by the application.

See also: vips_shrinkv(), vips_shrink(), vips_resize(), vips_affine().

This method is not directly available to language bindings.

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.
hshrink int
 

Horizontal shrink.

...
 

NULL-terminated list of optional named arguments.

Return value

Returns: int
 

0 on success, -1 on error.