Find the columns where a certain number is repeated consecutively

1 次查看（过去 30 天）

显示更早的评论

Yaisel Córdova Chávez 2021-4-14

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/802046-find-the-columns-where-a-certain-number-is-repeated-consecutively

编辑： Yaisel Córdova Chávez 2021-4-21

采纳的回答： Jonas

I have a matrix of ones and zeros of an Image (690 x 1100)

I need to find the columns where at least 50 zeros are repeated.

Can someone help me?

2 个评论
显示无隐藏无

Jan 2021-4-18

Does "50 zeros are repeated" mean a consecutive zeros?

Yaisel Córdova Chávez 2021-4-21

Yes, 50 consecutive zeros

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Jonas 2021-4-18

2
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/802046-find-the-columns-where-a-certain-number-is-repeated-consecutively#answer_678166

在 MATLAB Online 中打开

quick and dirty small example

a=[ 1 1 1 0 1;...
    0 1 1 0 1;...
    0 0 1 1 1;...
    0 1 1 1 1];
nrOfMinZerosPerCol=2;
colsWithRepetitions=~all(conv2(a,ones(nrOfMinZerosPerCol,1),'valid'),1);

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Yaisel Córdova Chávez 2021-4-21

编辑：Yaisel Córdova Chávez 2021-4-21

Thank you very much for your answer Jonas. I had found a way with two for, but this is faster and more efficient.

请先登录，再进行评论。

类别

Image Processing and Computer Vision Image Processing Toolbox

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

产品

Image Processing Toolbox

Community Treasure Hunt

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

Start Hunting!

Translated by