how can split image to 4 parts using "reshape" or using another way?

1 次查看（过去 30 天）
Katran Nakhla
Katran Nakhla 2018-2-21
回答： Image Analyst 2018-2-21
how can split image to 4 parts using "reshape" or using another way?

请先登录，再回答此问题。

回答（2 个）

John D'Errico
John D'Errico 2018-2-21
Why not try something? That is how you will learn.
A = rand(10,10)
A =
0.93614 0.13657 0.90563 0.5726 0.84819 0.67039 0.88059 0.60703 0.70625 0.51732
0.65876 0.21378 0.65182 0.38672 0.071682 0.4315 0.46093 0.053151 0.11428 0.21982
0.74794 0.21783 0.55094 0.085353 0.73923 0.34301 0.24875 0.59034 0.62061 0.38731
0.29529 0.14848 0.085495 0.3939 0.30351 0.61554 0.37059 0.26615 0.9813 0.66854
0.68423 0.6687 0.85758 0.058756 0.14468 0.0059446 0.68537 0.58939 0.36382 0.22756
0.20548 0.12054 0.5337 0.44348 0.47234 0.50325 0.32803 0.63827 0.94148 0.4208
0.77899 0.84029 0.53184 0.32736 0.021976 0.74268 0.80725 0.4474 0.28855 0.55414
0.56198 0.66423 0.093623 0.53036 0.25132 0.61766 0.95857 0.47626 0.57313 0.76301
0.42388 0.80682 0.17905 0.21329 0.42847 0.85672 0.24577 0.91463 0.32361 0.16648
0.046974 0.085508 0.73136 0.96149 0.5751 0.9539 0.51691 0.69254 0.99483 0.8542
permute(reshape(A,[10/2,2,10/2,2]),[1 3 2 4])
ans(:,:,1,1) =
0.93614 0.13657 0.90563 0.5726 0.84819
0.65876 0.21378 0.65182 0.38672 0.071682
0.74794 0.21783 0.55094 0.085353 0.73923
0.29529 0.14848 0.085495 0.3939 0.30351
0.68423 0.6687 0.85758 0.058756 0.14468
ans(:,:,2,1) =
0.20548 0.12054 0.5337 0.44348 0.47234
0.77899 0.84029 0.53184 0.32736 0.021976
0.56198 0.66423 0.093623 0.53036 0.25132
0.42388 0.80682 0.17905 0.21329 0.42847
0.046974 0.085508 0.73136 0.96149 0.5751
ans(:,:,1,2) =
0.67039 0.88059 0.60703 0.70625 0.51732
0.4315 0.46093 0.053151 0.11428 0.21982
0.34301 0.24875 0.59034 0.62061 0.38731
0.61554 0.37059 0.26615 0.9813 0.66854
0.0059446 0.68537 0.58939 0.36382 0.22756
ans(:,:,2,2) =
0.50325 0.32803 0.63827 0.94148 0.4208
0.74268 0.80725 0.4474 0.28855 0.55414
0.61766 0.95857 0.47626 0.57313 0.76301
0.85672 0.24577 0.91463 0.32361 0.16648
0.9539 0.51691 0.69254 0.99483 0.8542
Image Analyst
Image Analyst 2018-2-21
How about indexing?
[rows, columns, numColorChannels] = size(yourImage);
middleRow = floor(rows/2);
middleCol = floop(columns/2);
upperLeftImage = yourImage(1:middleRow, 1:middleCol, :);
upperRightImage = yourImage(1:middleRow, middleCol+1:end, :);
lowerLeftImage = yourImage(middleRow+1:end, 1:middleCol, :);
lowerRightImage = yourImage(middleRow+1:end, middleCol+1:end, :);

类别

在 Help Center 和 File Exchange 中查找有关 Image Arithmetic 的更多信息

标签

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by