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# Module attribute Methods

## 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 all the pixels in the image have the same red, green, and blue intensities.

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 all the pixels in the image have the same red, green, and blue intensities and the intensity is either 0 or QuantumRange.

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.

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