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[求助]
matlab中的reducevolume函數(shù)
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| matlab中的reducevolume函數(shù)的用法是什么,怎么我在三維重建的時(shí)候,不對(duì)三維數(shù)據(jù)用reducevolume預(yù)處理,重建就不能進(jìn)行。 |

主管區(qū)長(zhǎng) (職業(yè)作家)
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專家經(jīng)驗(yàn): +1059 |
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REDUCEVOLUME Reduce volume dataset. [NX, NY, NZ, NV] = REDUCEVOLUME(X,Y,Z,V,[Rx Ry Rz]) reduces the number of elements in the volume by only keeping every Rx element in the x direction, every Ry element in the y direction, and every Rz element in the z direction. If a scalar R is used to indicate the amount or reduction instead of a 3 element vector, the reduction is assumed to be [R R R]. Arrays X, Y and Z specify the points at which the data V is given. The reduced volume is returned in NV and the coordinates of the reduced volume are given in NX, NY, and NZ. [NX, NY, NZ, NV] = REDUCEVOLUME(V,[Rx Ry Rz]) assumes [X Y Z] = meshgrid(1:N, 1:M, 1 ) where [M,N,P]=SIZE(V).NV = REDUCEVOLUME(...) returns the reduced volume only. Example: load mri D = squeeze(D); [x y z D] = reducevolume(D, [4 4 1]); D = smooth3(D); p = patch(isosurface(x,y,z,D, 5,'verbose'), ... 'FaceColor', 'red', 'EdgeColor', 'none'); p2 = patch(isocaps(x,y,z,D, 5), 'FaceColor', 'interp', 'EdgeColor', 'none'); view(3); axis tight; daspect([1 1 .4]) colormap(gray(100)) camlight; lighting gouraud isonormals(x,y,z,D,p); |


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