OpenPose识别人体骨架MATLAB源代码

function data = loadjson(fname,varargin) % % data=loadjson(fname,opt) % or % data=loadjson(fname,'param1',value1,'param2',value2,...) % % parse a JSON (JavaScript Object Notation) file or string % % authors:Qianqian Fang (q.fang <at> neu.edu) % created on 2011/09/09, including previous works from % % Nedialko Krouchev: http://www.mathworks.com/matlabcentral/fileexchange/25713 % created on 2009/11/02 % François Glineur: http://www.mathworks.com/matlabcentral/fileexchange/23393 % created on 2009/03/22 % Joel Feenstra: % http://www.mathworks.com/matlabcentral/fileexchange/20565 % created on 2008/07/03 % % input: % fname: input file name; if fname contains "{}" or "[]", fname % will be interpreted as a JSON string % opt: (optional) a struct to store parsing options, opt can be replaced by % a list of ('param',value) pairs - the param string is equivallent % to a field in opt. opt can have the following % fields (first in [.|.] is the default) % % SimplifyCell [1|0]: if set to 1, loadjson will call cell2mat % for each element of the JSON data, and group % arrays based on the cell2mat rules. % FastArrayParser [1|0 or integer]: if set to 1, use a % speed-optimized array parser when loading an % array object. The fast array parser may % collapse block arrays into a single large % array similar to rules defined in cell2mat; 0 to % use a legacy parser; if set to a larger-than-1 % value, this option will specify the minimum % dimension to enable the fast array parser. For % example, if the input is a 3D array, setting % FastArrayParser to 1 will return a 3D array; % setting to 2 will return a cell array of 2D % arrays; setting to 3 will return to a 2D cell % array of 1D vectors; setting to 4 will return a % 3D cell array. % UseMap [0|1]: if set to 1, loadjson uses a containers.Map to % store map objects; otherwise use a struct object % ShowProgress [0|1]: if set to 1, loadjson displays a progress bar. % ParseStringArray [0|1]: if set to 0, loadjson converts "string arrays" % (introduced in MATLAB R2016b) to char arrays; if set to 1, % loadjson skips this conversion. % FormatVersion [2|float]: set the JSONLab format version; since % v2.0, JSONLab uses JData specification Draft 1 % for output format, it is incompatible with all % previous releases; if old output is desired, % please set FormatVersion to 1.9 or earlier. % Encoding ['']: json file encoding. Support all encodings of % fopen() function % ObjectID [0|interger or list]: if set to a positive number, % it returns the specified JSON object by index % in a multi-JSON document; if set to a vector, % it returns a list of specified objects. % JDataDecode [1|0]: if set to 1, call jdatadecode to decode % JData structures defined in the JData % Specification. % % output: % dat: a cell array, where {...} blocks are converted into cell arrays, % and [...] are converted to arrays % % examples: % dat=loadjson('{"obj":{"string":"value","array":[1,2,3]}}') % dat=loadjson(['examples' filesep 'example1.json']) % dat=loadjson(['examples' filesep 'example1.json'],'SimplifyCell',0) % % license: % BSD or GPL version 3, see LICENSE_{BSD,GPLv3}.txt files for details % % -- this function is part of JSONLab toolbox (http://iso2mesh.sf.net/cgi-bin/index.cgi?jsonlab) % opt=varargin2struct(varargin{:}); if(regexp(fname,'^\s*(?:\[.*\])|(?:\{.*\})\s*$','once')) string=fname; elseif(exist(fname,'file')) try encoding = jsonopt('Encoding','',opt); if(isempty(encoding)) string = fileread(fname); else fid = fopen(fname,'r','n',encoding); string = fread(fid,'*char')'; fclose(fid); end catch try string = urlread(['file://',fname]); catch string = urlread(['file://',fullfile(pwd,fname)]); end end else error_pos('input file does not exist'); end pos = 1; inputlen = length(string); inputstr = string; arraytokenidx=find(inputstr=='[' | inputstr==']'); arraytoken=inputstr(arraytokenidx); % String delimiters and escape chars identified to improve speed: esc = find(inputstr=='"' | inputstr=='\' ); % comparable to: regexp(inputstr, '["\\]'); index_esc = 1; opt.arraytoken_=arraytoken; opt.arraytokenidx_=arraytokenidx; opt.simplifycell=jsonopt('SimplifyCell',1,opt); opt.simplifycellarray=jsonopt('SimplifyCellArray',0,opt); opt.formatversion=jsonopt('FormatVersion',2,opt); opt.fastarrayparser=jsonopt('FastArrayParser',1,opt); opt.parsestringarray=jsonopt('ParseStringArray',0,opt); opt.usemap=jsonopt('UseMap',0,opt); opt.arraydepth_=1; if(jsonopt('ShowProgress',0,opt)==1) opt.progressbar_=waitbar(0,'loading ...'); end objid=jsonopt('ObjectID',0,opt); maxobjid=max(objid); if(maxobjid==0) maxobjid=inf; end jsoncount=1; while pos <= inputlen [cc,pos]=next_char(inputstr, pos); switch(cc) case '{' [data{jsoncount},pos,index_esc] = parse_object(inputstr, pos, esc, index_esc,opt); case '[' [data{jsoncount},pos,index_esc] = parse_array(inputstr, pos, esc, index_esc,opt); otherwise pos=error_pos('Outer level structure must be an object or an array',inputstr,pos); end if(jsoncount>=maxobjid) break; end jsoncount=jsoncount+1; end % while if(length(objid)>1 || min(objid)>1) data=data(objid(objid<=length(data))); end jsoncount=length(data); if(jsoncount==1 && iscell(data)) data=data{1}; end if(jsonopt('JDataDecode',1,varargin{:})==1) data=jdatadecode(data,'Base64',1,'Recursive',1,varargin{:}); end if(isfield(opt,'progressbar_')) close(opt.progressbar_); end end %%------------------------------------------------------------------------- %% helper functions %%------------------------------------------------------------------------- function [object, pos,index_esc] = parse_array(inputstr, pos, esc, index_esc, varargin) % JSON array is written in row-major order pos=parse_char(inputstr, pos, '['); object = cell(0, 1); arraydepth=varargin{1}.arraydepth_; pbar=-1; if(isfield(varargin{1},'progressbar_')) pbar=varargin{1}.progressbar_; end format=varargin{1}.formatversion; [cc,pos]=next_char(inputstr,pos); endpos=[]; if cc ~= ']' try if((varargin{1}.fastarrayparser)>=1 && arraydepth>=varargin{1}.fastarrayparser) [endpos, maxlevel]=fast_match_bracket(varargin{1}.arraytoken_,varargin{1}.arraytokenidx_,pos); if(~isempty(endpos)) arraystr=['[' inputstr(pos:endpos)]; arraystr=sscanf_prep(arraystr); if(isempty(find(arraystr=='"', 1))) % handle 1D array first if(maxlevel==1) astr=arraystr(2:en