how to inpaint a region of interest recursively

Hi everyone!

I have an image called 'lion.jpg' .

I did segmentation to the lions in the center using the segmentImage.m function , and got this image:

I need to inpaint the black region that was created , and I need a solution to do that recursively from outside to inside:

I tried to use the inpaintCoherent function but the result was not acually what i needed , I got this:

You can see that the inpaintCoherent function filled the area of the mountains with colored lines , and this is not good for me. I want to fille the region smoothly.

I tried to blure the region but I really dont want to do that.

I shared my code : try1.m with you, and you can see it here too:

clc;

clear;

close all;

I = imread('lion.jpg');

figure; imshow(I,[]);

[BW,mask] = segmentImage(I);

figure; imshow(BW);

bg = I - mask;

figure; imshow(bg)

figure; montage({I,BW});

%% inpaint

title(['Image to Be Inpainted',' | ','Mask for Inpainting']);

J = inpaintCoherent(I,BW,'Radius',7);

figure; imshow(J);

figure;

montage({I,J});

title(['Image to Be Inpainted',' | ','Inpainted Image']);

%% try to blur the image:

redChannel = J(:, :, 1);

greenChannel = J(:, :, 2);

blueChannel = J(:, :, 3);

% H = fspecial('disk',20);

H = fspecial('average',33);

redChannel = roifilt2(H,redChannel,BW);

greenChannel = roifilt2(H,greenChannel,BW);

blueChannel = roifilt2(H,blueChannel,BW);

rgbImage = cat(3, redChannel,greenChannel,blueChannel);

figure;

subplot(1,2,1); imshow(J); title('Inpainted Image');

subplot(1,2,2); imshow(rgbImage); title('image after blure');

Answer 1

[Image Analyst]

The function you want is called regionfill().

Description

example

J = regionfill(I,mask) fills the regions in image I specified by mask. Non-zero pixels in mask designate the pixels of image I to fill. You can use regionfill to remove objects in an image or to replace invalid pixel values using their neighbors.

example

J = regionfill(I,x,y) fills the region in image I corresponding to the polygon with vertices specified by x and y.

[David Levi]

First of all, thank you for your answer!

I have another one for you.

Here is the result of the regionfill function:

now I have another idea.

Is it possible to create a roi (rectangle) of the mountains near the segmented area , and replace with it the restored area? :

The motivation is to create something like this (I used Microsoft Paint....)

do you have any idea how to do it in matlab interactively?

[Image Analyst]

Terrain generation is not trivial. You can try image quilting:

https://www.mathworks.com/matlabcentral/fileexchange/35828-siggraph2002-image-quilting-texture-synthesize?s_tid=srchtitle

Or you can try to generate something using Perlin noise (Google it).

Or you can just get rid of the columns with "seam carving" (Google it).

Since it looks like a one-off situation, maybe you can just interactively clone part of the image using the Clone Stamp tool in Photoshop.

[Manolis]

Does the above answer stands for R2025a ? Any hope with inpaintExemplar or inpaintCoherent ?

Thanks in advance .

[Image Analyst]

I haven't used those functions so I can't comment on them. You know more about them than me.

[Manolis]

Thanks anyway Image Analyst.