Skip to content

count_channelsCountChannelsCountChannelscount_channelscount_channels🔗

Short description🔗

count_channelsCountChannelsCountChannelscount_channelscount_channels — Count channels of image.

Signature🔗

count_channels( image MultiChannelImage, out integer Channels )void CountChannels( const HObject& MultiChannelImage, HTuple* Channels )static void HOperatorSet.CountChannels( HObject multiChannelImage, out HTuple channels )def count_channels( multi_channel_image: HObject ) -> Sequence[int]

def count_channels_s( multi_channel_image: HObject ) -> intHerror count_channels( const Hobject MultiChannelImage, Hlong* Channels )

Herror T_count_channels( const Hobject MultiChannelImage, Htuple* Channels )

HTuple HImage::CountChannels( ) const

HTuple HImage.CountChannels( )

Description🔗

The operator count_channelsCountChannels counts the number of channels of all input images.

Execution information🔗

Execution information

  • Supports objects on compute devices.

  • Multithreading type: reentrant (runs in parallel with non-exclusive operators).

  • Multithreading scope: global (may be called from any thread).

  • Processed without parallelization.

Parameters🔗

MultiChannelImagemultiChannelImagemulti_channel_image (input_object) (multichannel-)image(-array) → object (byte / direction / cyclic / int1 / int2 / uint2 / int4 / int8 / real / complex / vector_field)HObject (byte / direction / cyclic / int1 / int2 / uint2 / int4 / int8 / real / complex / vector_field)HImage (byte / direction / cyclic / int1 / int2 / uint2 / int4 / int8 / real / complex / vector_field)HObject (byte / direction / cyclic / int1 / int2 / uint2 / int4 / int8 / real / complex / vector_field)Hobject (byte / direction / cyclic / int1 / int2 / uint2 / int4 / int8 / real / complex / vector_field)

One- or multi-channel image.

Channelschannelschannels (output_control) integer(-array) → (integer)HTuple (Hlong)HTuple (int / long)Sequence[int]Htuple (Hlong)

Number of channels.

Example🔗

(C)

read_image(&Color,"patras")\;
count_channels(Color,&num_channels)\;
for (i=1\; i<=num_channels\; i++)
{
  access_channel(Color,&Channel,i)\;
  disp_image(Channel,WindowHandle)\;
  clear_obj(Channel)\;
}

Combinations with other operators🔗

Combinations

Possible successors

access_channelAccessChannel, append_channelAppendChannel, disp_imageDispImage

See also

append_channelAppendChannel, access_channelAccessChannel

Module🔗

Foundation