How could I mark other than Blue Pixels in this image?

2 次查看（过去 30 天）

Murat Kocaman 2018-9-4

评论： Walter Roberson 2018-9-4

Hello,

I would like to mark other than blue pixels.

Later I will compare these pixels with the other image pixel values. Is there anyone helping on this issue?

Walter Roberson 2018-9-4

Define "blue" for your purposes. Is (93, 138, 168) blue? It is for legal purposes -- it is "Air Force Blue".

Murat Kocaman 2018-9-4

Yes I did. My problem is on marking. I couldn't mark them.

Walter Roberson 2018-9-4

编辑：Walter Roberson 2018-9-4

[R, C] = find(~MaskIndicatingWhichPixelsAreBlue);
image(YourRGBImage);
hold on
markersize = 8;
scatter(C(:), R(:), markersize, 'r*');
hold off

Walter Roberson 2018-9-4

I just added a small correction to mark the pixels that are not blue.

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