Maximising Pixels within Certain area of Matrix

1 次查看（过去 30 天）

显示更早的评论

Harry Andrews 2018-7-13

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/410264-maximising-pixels-within-certain-area-of-matrix

评论： Harry Andrews 2018-7-13

采纳的回答： Guillaume

Hi Everyone,

I'd like to loop through a matrix (128x128) and find the area (Lets say 5x5 Pixels) with the highest pixel values.

What is the best way to do this?

Thanks!

2 个评论
显示无隐藏无

Guillaume 2018-7-13

编辑：Guillaume 2018-7-13

What is the definition of an area with the highest pixel values? One whose sum of pixel values is the greatest? One whose maximum is the greatest? Something else?

Harry Andrews 2018-7-13

编辑：Harry Andrews 2018-7-13

One whose sum of pixel values is the greatest please :)

Thank you for helping!

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Guillaume 2018-7-13

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/410264-maximising-pixels-within-certain-area-of-matrix#answer_328751

编辑：Guillaume 2018-7-13

在 MATLAB Online 中打开

One whose sum of pixel values is the greatest

Convolve your matrix with an array of 1 the same size as the area. The location of the maximum of the convolution is the centre of the area with the highest sum:

areasum = conv2(yourmatrix, ones(5)), 'same');
[~, idx] = max(areasum);
[centrerow, centrecol] = ind2sub(size(yourmatrix), idx)

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Harry Andrews 2018-7-13

This is perfect, thank you <3

请先登录，再进行评论。

类别

Image Processing and Computer Vision Image Processing Toolbox Image Filtering and Enhancement Morphological Operations

在 Help Center 和 File Exchange 中查找有关 Morphological Operations 的更多信息

Community Treasure Hunt

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

Start Hunting!

Translated by