mirror of
https://github.com/c-sooyoung/fold_slice.git
synced 2026-09-17 23:39:08 +09:00
79 lines
3.9 KiB
Matlab
79 lines
3.9 KiB
Matlab
% GET_FROM_ARRAY simplified wrapper around CPU-based multithread mex function "get_from_3D_projection"
|
||
%
|
||
% object_block = get_from_array(full_object, object_block, indices, offset)
|
||
%
|
||
%
|
||
% Inputs:
|
||
% **full_object - (3D array) large volume block where data will be loded from
|
||
% **object_block - (3D array) smaller volume block into which the selected data from full_object will be added
|
||
% **indices - list of slices along 3rd axis that are written to object_block, starting from 0
|
||
% **offset - (numel(indices)x2 nonnegative integers) offset from (1,1) corner
|
||
% *returns*
|
||
% ++object_block - loaded small block of the full_object
|
||
% Example:
|
||
% function is equivalent (but much faster) to
|
||
% for ii = 1:size(object_block,3)
|
||
% object_block(:,:,ii) = full_object(offset(ii,1)+1:size(object_block,1) , offset(ii,2)+1:size(object_block,2),ii);
|
||
% end
|
||
|
||
|
||
%*-----------------------------------------------------------------------*
|
||
%| |
|
||
%| Except where otherwise noted, this work is licensed under a |
|
||
%| Creative Commons Attribution-NonCommercial-ShareAlike 4.0 |
|
||
%| International (CC BY-NC-SA 4.0) license. |
|
||
%| |
|
||
%| Copyright (c) 2017 by Paul Scherrer Institute (http://www.psi.ch) |
|
||
%| |
|
||
%| Author: CXS group, PSI |
|
||
%*-----------------------------------------------------------------------*
|
||
% You may use this code with the following provisions:
|
||
%
|
||
% If the code is fully or partially redistributed, or rewritten in another
|
||
% computing language this notice should be included in the redistribution.
|
||
%
|
||
% If this code, or subfunctions or parts of it, is used for research in a
|
||
% publication or if it is fully or partially rewritten for another
|
||
% computing language the authors and institution should be acknowledged
|
||
% in written form in the publication: “Data processing was carried out
|
||
% using the “cSAXS matlab package” developed by the CXS group,
|
||
% Paul Scherrer Institut, Switzerland.”
|
||
% Variations on the latter text can be incorporated upon discussion with
|
||
% the CXS group if needed to more specifically reflect the use of the package
|
||
% for the published work.
|
||
%
|
||
% A publication that focuses on describing features, or parameters, that
|
||
% are already existing in the code should be first discussed with the
|
||
% authors.
|
||
%
|
||
% This code and subroutines are part of a continuous development, they
|
||
% are provided “as they are” without guarantees or liability on part
|
||
% of PSI or the authors. It is the user responsibility to ensure its
|
||
% proper use and the correctness of the results.
|
||
|
||
function object_block = get_from_array(full_object, object_block, indices, offset)
|
||
if nargin < 4
|
||
offset = [0,0];
|
||
end
|
||
|
||
Nind = length(indices);
|
||
if isempty(object_block)
|
||
object_block = zeros(size(full_object,1), size(full_object,2), Nind, 'like',full_object);
|
||
end
|
||
if isa(object_block,'shm')
|
||
object_block.allocate(zeros(size(full_object,1), size(full_object,2), Nind, 'like',full_object));
|
||
[s,object_block] = object_block.attach();
|
||
end
|
||
|
||
positions = zeros(size(object_block,3),2,'int32') + int32(offset);
|
||
|
||
% mex custom made fast get function
|
||
utils.get_from_3D_projection(object_block,full_object,positions, int32(indices));
|
||
|
||
|
||
if exist('s','var')
|
||
s.detach;
|
||
object_block = s;
|
||
end
|
||
end
|