select_grayvalues_from_channelsselect_grayvalues_from_channelsSelectGrayvaluesFromChannelsSelectGrayvaluesFromChannels (Operator)

Name

select_grayvalues_from_channelsselect_grayvalues_from_channelsSelectGrayvaluesFromChannelsSelectGrayvaluesFromChannels — Selection of gray values of a multi-channel image using an index image.

Signature

select_grayvalues_from_channels(MultichannelImage, IndexImage : Selected : : )

Description

The operator select_grayvalues_from_channelsselect_grayvalues_from_channelsSelectGrayvaluesFromChannelsSelectGrayvaluesFromChannelsSelectGrayvaluesFromChannels selects gray values from the different channels of MultichannelImageMultichannelImageMultichannelImageMultichannelImagemultichannelImage. The channel number for each pixel is determined from the corresponding pixel value in IndexImageIndexImageIndexImageIndexImageindexImage. If MultichannelImageMultichannelImageMultichannelImageMultichannelImagemultichannelImage and IndexImageIndexImageIndexImageIndexImageindexImage contain the same number of images, the corresponding images are processed pairwise. Otherwise, IndexImageIndexImageIndexImageIndexImageindexImage must contain only one single image. In this case, the gray value selection is performed for each image of MultichannelImageMultichannelImageMultichannelImageMultichannelImagemultichannelImage according to IndexImageIndexImageIndexImageIndexImageindexImage .

Execution Information

Multithreading type: reentrant (runs in parallel with non-exclusive operators).
Multithreading scope: global (may be called from any thread).
Automatically parallelized on tuple level.
Automatically parallelized on domain level.

Parameters

MultichannelImageMultichannelImageMultichannelImageMultichannelImagemultichannelImage (input_object) (multichannel-)image(-array) → object (byte)

Multi-channel gray value image.

IndexImageIndexImageIndexImageIndexImageindexImage (input_object) singlechannelimage(-array) → object (byte)

Image, where pixel values are interpreted as channel index.

Number of elements: IndexImage == MultichannelImage || IndexImage == 1

SelectedSelectedSelectedSelectedselected (output_object) singlechannelimage(-array) → object (byte)

Resulting image.

Example (C++ (HALCON 5.0-10.0))

compose3(Focus0,Focus1,Focus2,&MultiFocus);
depth_from_focus(MultiFocus,&Depth,&Confidence,'highpass','next_maximum');
mean_image(Depth,&Smooth,15,15);
select_grayvalues_from_channels(MultiChannel,Smooth,SharpImage);