hi i need instruction or function to return locaition of pixel

Question

fatima ali 2014-12-19

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/167239-hi-i-need-instruction-or-function-to-return-locaition-of-pixel

评论： Image Analyst 2014-12-20

hi i need instruction or function to return locaition of pixel....i search pixel in image ..i need to return location pixel ...how work this in matlab

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Image Analyst 2014-12-20

Your edit did not help. We still don't know what you mean. Again, please explain/clarify. Perhaps give an example or a screenshot after you read this.

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Azzi Abdelmalek 2014-12-19

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/167239-hi-i-need-instruction-or-function-to-return-locaition-of-pixel#answer_162834

You can use find function

2 个评论
显示无隐藏无

fatima ali 2014-12-19

find not reurun location of pixel

Azzi Abdelmalek 2014-12-19

编辑：Azzi Abdelmalek 2014-12-19

Maybe you need to use ginput function

请先登录，再进行评论。

Answer 2

Image Analyst 2014-12-20

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/167239-hi-i-need-instruction-or-function-to-return-locaition-of-pixel#answer_162939

Either use ginput() to have the user manually specify a point, or use impixelinfo() to put up a label that updates "live" with the mouse movement, giving the location and pixel value.

2 个评论
显示无隐藏无

fatima ali 2014-12-20

thanks..i know ginput and impixel but i not want ginput amd impxel..i search pixel in image ..i need to return location pixel ...how work this in matlab

Image Analyst 2014-12-20

在 MATLAB Online 中打开

If you have a binary image, like you commented on to Shoaibur, and you want locations where the image is true (value of 1), then just do

[rows, columns] = find(binaryImage);

Is that what you want? If so, why? Because I never do that and I do image processing all the time. You probably don't need to do that. Tell me what you really really want to do and I can show you how.

Please explain in way more detail what this means : "i search pixel in image"

And please explain this in way more detail: "i need to return location pixel". What is a "location pixel"?

You told Shoaibur that whatever it is, it's not what you can get from doing this:

[rows, columns] = find(yourImage == pixelValue)

so exactly what do you want?

请先登录，再进行评论。