how to extract x and y coordinates within yellow boundary in an image

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Ahmad Ridzuan Kudus
回答： Akira Agata 2018-7-13
Hi. Here I have an image with yellow boundary as salient region (attached image). How can I extract the ordered list of x and y coordinates within the yellow region from the image?
Thank you in advance.

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Akira Agata
Akira Agata 2018-7-13
How about the following?
I = imread('untitled.jpg');
Ilab = rgb2lab(I);
BW = Ilab(:,:,3) > 25;
se = strel('disk',20);
BW = imclose(BW,se);
BW = bwareafilt(BW,1);
xyCoordinates = regionprops(BW,'PixelList');

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