%?圖像分塊，并且做變換，為找相似塊做準備
%?k:塊大小，p：塊移動步長，lambda2D，delta?收縮閾值
%?block?返回的塊，transform_block?變換后的塊
%?block2row_idxblock2col_idx?為保存的?塊索引?與?塊左上角在圖像中坐標的?對應關系
function?[blocktransform_blockblock2row_idxblock2col_idx]?=im2block（imgkplambda2Ddelta）
????[rowcol]=size（img）;
????%這個閾值該用什么公式呢？？
????thres=lambda2D*delta*sqrt（2*log（row*col））;
????%?r_num:行方向?上?應該有?多少個塊
????r_num=floor（（row-k）/p）+1;
????c_num=floor（（col-k）/p）+1;
????block=zeros（kkr_num*c_num）;
????block2row_idx=[];
????block2col_idx=[];
????cnt=1;
????for?i=0:1:r_num-1
????????rs=1+i*p;
????????for?j=0:1:c_num-1
????????????cs=1+j*p;
????????????block（::cnt）=img（rs:rs+k-1cs:cs+k-1）;
????????????block2row_idx（cnt）=rs;
????????????block2col_idx（cnt）=cs;
????????????%該用什么變換呢？？
????????????tr_b=fft2（block（:

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2015-02-03?15:01??BM3D\
?????文件????????1107??2015-02-03?15:01??BM3D\im2block.m
?????文件????????1084??2015-02-03?14:57??BM3D\inv_transform_3d.m
?????文件????????6506??2015-02-03?14:56??BM3D\main.m
?????文件????????1928??2015-02-03?14:58??BM3D\search_similar_block.m
?????文件????????1265??2015-02-03?14:58??BM3D\testmatch.m
?????文件?????????144??2015-02-03?14:59??BM3D\thres_shrink.m
?????文件????????2660??2015-02-03?15:01??BM3D\transform_3d.m