Image - calculating gradient

1 次查看（过去 30 天）

Nima Azar 2011-7-11

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/11388-image-calculating-gradient

Hi all, I have a grayscale image. I need to calculate the gradient from where it's saturated to where it's fading out. Does matlab has a function for that? If not, do you have any ideas on how to do so?

thanks.

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。

回答（1 个）

Image Analyst 2011-7-12

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/11388-image-calculating-gradient#answer_15530

Did you look? If you had, you would have seen gradient(). You can also use conv2() or edge() or others. Post your image if you want more help.

2 个评论
显示无隐藏无

Nima Azar 2011-7-12

So this image is very similar to what I'm dealing with:

http://www.buildtutorial.com/wp-content/uploads/2010/04/02-light-gradient.jpg

I need to select the area first then calculate the gradient on the image. Sorry I'm very new to matlab.

regards,

Image Analyst 2011-7-12

And how do you want to select an area (before calculating the gradient)? Automatically based on intensity or something? Manually by having user trace some area?

请先登录，再进行评论。

请先登录，再回答此问题。