ImageMagick: MagickCore, C API for ImageMagick: Set Text Attributes
Author: ImageMagick Studio LLC
Description: ImageMagick® is a software suite to create, edit, compose, or convert bitmap images. It can read and write images in a variety of formats (over 200) including PNG, JPEG, JPEG-2000, GIF, WebP, Postscript, PDF, and SVG. Use ImageMagick to resize, flip, mirror, rotate, distort, shear and transform images, adjust image colors, apply various special effects, or draw text, lines, polygons, ellipses and Bézier curves.
Keywords: magickcore, c, api, for, imagemagick:, set, text, attributes, ImageMagick, PerlMagick, image processing, image, photo, software, Magick++, OpenMP, convert

GetImageChannelDepth • GetImageQuantumDepth • GetImageType • IsGrayImage • IsMonochromeImage • IsOpaqueImage • SetImageChannelDepth • SetImageGray • SetImageMonochrome • SetImageType

## GetImageChannelDepth

GetImageChannelDepth() returns the depth of a particular image channel.

The format of the GetImageChannelDepth method is:

    size_t GetImageDepth(const Image *image,ExceptionInfo *exception)
    size_t GetImageChannelDepth(const Image *image,
      const ChannelType channel,ExceptionInfo *exception)

A description of each parameter follows:

image
  the image.
channel
  the channel.
exception
  return any errors or warnings in this structure.

## GetImageQuantumDepth

GetImageQuantumDepth() returns the depth of the image rounded to a legal quantum depth: 8, 16, or 32.

The format of the GetImageQuantumDepth method is:

    size_t GetImageQuantumDepth(const Image *image,
      const MagickBooleanType constrain)

A description of each parameter follows:

image
  the image.
constrain
  A value other than MagickFalse, constrains the depth to a maximum of MAGICKCORE_QUANTUM_DEPTH.

## GetImageType

GetImageType() returns the potential type of image:

Bilevel Grayscale GrayscaleMatte Palette PaletteMatte TrueColor TrueColorMatte ColorSeparation ColorSeparationMatte

To ensure the image type matches its potential, use SetImageType():

        (void) SetImageType(image,GetImageType(image));

The format of the GetImageType method is:

    ImageType GetImageType(const Image *image,ExceptionInfo *exception)

A description of each parameter follows:

image
  the image.
exception
  return any errors or warnings in this structure.

## IsGrayImage

IsGrayImage() returns MagickTrue if the type of the image is grayscale or bi-level.

The format of the IsGrayImage method is:

    MagickBooleanType IsGrayImage(const Image *image,
      ExceptionInfo *exception)

A description of each parameter follows:

image
  the image.
exception
  return any errors or warnings in this structure.

## IsMonochromeImage

IsMonochromeImage() returns MagickTrue if type of the image is bi-level.

The format of the IsMonochromeImage method is:

    MagickBooleanType IsMonochromeImage(const Image *image,
      ExceptionInfo *exception)

A description of each parameter follows:

image
  the image.
exception
  return any errors or warnings in this structure.

## IsOpaqueImage

IsOpaqueImage() returns MagickTrue if none of the pixels in the image have an opacity value other than opaque (0).

The format of the IsOpaqueImage method is:

    MagickBooleanType IsOpaqueImage(const Image *image,
      ExceptionInfo *exception)

A description of each parameter follows:

image
  the image.
exception
  return any errors or warnings in this structure.

## SetImageChannelDepth

SetImageChannelDepth() sets the depth of the image.

The format of the SetImageChannelDepth method is:

    MagickBooleanType SetImageDepth(Image *image,const size_t depth)
    MagickBooleanType SetImageChannelDepth(Image *image,
      const ChannelType channel,const size_t depth)

A description of each parameter follows:

image
  the image.
channel
  the channel.
depth
  the image depth.

## SetImageGray

SetImageGray() returns MagickTrue if all the pixels in the image have the same red, green, and blue intensities and changes the type of the image to bi-level or grayscale.

The format of the SetImageGray method is:

    MagickBooleanType SetImageGray(const Image *image,
      ExceptionInfo *exception)

A description of each parameter follows:

image
  the image.
exception
  return any errors or warnings in this structure.

## SetImageMonochrome

SetImageMonochrome() returns MagickTrue if all the pixels in the image have the same red, green, and blue intensities and the intensity is either 0 or QuantumRange and changes the type of the image to bi-level.

The format of the SetImageMonochrome method is:

    MagickBooleanType SetImageMonochrome(const Image *image,
      ExceptionInfo *exception)

A description of each parameter follows:

image
  the image.
exception
  return any errors or warnings in this structure.

## SetImageType

SetImageType() sets the type of image. Choose from these types:

BilevelType, GrayscaleType, GrayscaleMatteType, PaletteType, PaletteMatteType, TrueColorType, TrueColorMatteType, ColorSeparationType, ColorSeparationMatteType, OptimizeType

The format of the SetImageType method is:

    MagickBooleanType SetImageType(Image *image,const ImageType type)

A description of each parameter follows:

image
  the image.
type
  Image type.