select_grayvalues_from

select_grayvalues_from_channels ( MultichannelImage, IndexImage : Selected : : )

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

The operator select_grayvalues_from_channels selects gray values from a MultichannelImage. The channel number for each pixel is determined by using IndexImage: The gray value in IndexImage is used as the channel number in MultichannelImage.

Parameters

`MultichannelImage` (input_object)	multichannel-image(-array) `->` object : byte
Multichannel gray image.

`IndexImage` (input_object)	singlechannelimage(-array) `->` object : byte
Image, where gray values are interpreted as indexes.

`Selected` (output_object)	singlechannelimage(-array) `->` object : byte
Depth image.

Example

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);

Parallelization Information

select_grayvalues_from_channels is reentrant and automatically parallelized (on tuple level, domain level).

Possible Predecessors

depth_from_focus, mean_image

Possible Successors

disp_image

See also

count_channels

Module

Tools