Adding a filter to only white regions of image.

8 次查看（过去 30 天）
voidspecialist
voidspecialist 2021-11-14
评论： voidspecialist 2021-11-14
Hello, i have grayscale image and black and white image of the grayscale image. I want to add laplace filter to grayscale image pixels where the pixel's values are 1 in black and white image. How can i do this.

请先登录，再回答此问题。

采纳的回答

KALYAN ACHARJYA
KALYAN ACHARJYA 2021-11-14
result_image=gray_image.*bw_image;
%Now you can apply the filter on result_image
  4 个评论
显示 2更早的评论
KALYAN ACHARJYA
KALYAN ACHARJYA 2021-11-14
You may apply the filter on whole image, and later discard its effect on those 0 pixels??
voidspecialist
voidspecialist 2021-11-14
Is there any way to select the only zeros and apply a filter to that pixels ?

请先登录，再进行评论。

更多回答（1 个）

Image Analyst
Image Analyst 2021-11-14
Looks like you've already accepted an answer so I guess you got it figured out. But here is where I'd refer you:
locallapfilt
Fast local Laplacian filtering of images
collapse all in page
Syntax
B = locallapfilt(I,sigma,alpha)
B = locallapfilt(I,sigma,alpha,beta)
B = locallapfilt(___,Name,Value)
Description
example
B = locallapfilt(I,sigma,alpha) filters the grayscale or RGB image I with an edge-aware, fast local Laplacian filter. sigma characterizes the amplitude of edges in I. alpha controls smoothing of details.
B = locallapfilt(I,sigma,alpha,beta) filters the image using beta to control the dynamic range of A.
example
B = locallapfilt(___,Name,Value) uses name-value pairs to control advanced aspects of the filter.

类别

在 Help Center 和 File Exchange 中查找有关 Image Filtering and Enhancement 的更多信息

标签

产品


版本

R2021b

Community Treasure Hunt

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

Start Hunting!

Translated by