why should i subtract mean of image when searching for position of sub-image in image?

5 次查看(过去 30 天)
i have tried several times to find position of sub-image inside the bigger image, and i found out that i must substract the mean of the images for it.
i still couldn't understand why.
can someone help please?

回答(1 个)

Jalaj Gambhir
Jalaj Gambhir 2020-8-27
Hi,
I am not sure the complete process that you are following, but subtraction with mean Image is generally done to center the image. It is a common preprocessing step for most Image Processing algorithms.
Hope this helps!

类别

Help CenterFile Exchange 中查找有关 Feature Detection and Extraction 的更多信息

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by