How to convert an image to its correspending bw by making certain rgb to appear white and rest black.

5 次查看（过去 30 天）

Soumya Behera 2015-12-13

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/260121-how-to-convert-an-image-to-its-correspending-bw-by-making-certain-rgb-to-appear-white-and-rest-black

评论： Image Analyst 2015-12-14

I want a code which would convert an image into its corresponding bw image .the code should ask me to select certain rgb values which would appear white in the binary image and would blacken out the rest. for example if I want to convert the above image into bw form the program would ask for rgb values I would like to see as white in binary image (in this case triangles ,circles and squares)and blacken outs the rest. please help me with a method other than setting level as in the exam the colors of the objects would be different and we are no allowed to set levels on the spot.

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Image Analyst 2015-12-13

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/260121-how-to-convert-an-image-to-its-correspending-bw-by-making-certain-rgb-to-appear-white-and-rest-black#answer_203103

There is no image attached. But anyway, see my Image Segmentation by Delta E color difference in my File Exchange: http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862. It will do what you ask for. It lets the user trace out a color in the image, then it finds all pixels within a certain color difference of that color and gets a binary image. Then it masks the image so that you see matching color regions and non-matching color regions.

4 个评论
显示 2更早的评论隐藏 2更早的评论

Soumya Behera 2015-12-14

sir can you direct me to the links you are talking about in your comments

Image Analyst 2015-12-14

I already gave you the link. Here it is again: http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862 Just pick whichever color segmentation method you want to try. Actually, download and try all of them.

请先登录，再进行评论。