How do I save the image for the last part code?

Here's my code:

%%Step 3 : Calculation of area of the abnormality region Step

%To read the FCM input image

%I3=imread('redfcmgrayb245_78_864_rap00001.jpg');

I3=imread('greenfcmgrayb245_72_864_rap00001.jpg');

%To convert the input image to pure black and white to highlight the abnormality region and its background

%threshold=graythres(I3);

threshold=graythresh(I3);

bw=im2bw(I3,threshold);

%To display the pure black and white of the input image

imshow(bw);

%To save the display of pure black and white input image

%imwrite(bw,'redthresfcmgrayb245_78_864_rap00001.jpg');

imwrite(bw,'greenthresfcmgrayb245_72_864_rap00001.jpg');

%To remove image noise which consists of extraneous pixels in the objects

%of interest (abnormality region) in order to obtain accurate calculation

bw=bwareaopen(bw,30);

se=strel('disk',2);

bw=imclose(bw,se);

imshow(bw);

%imwrite(bw,'redopenthresfcmgrayb245_78_864_rap00001.jpg');

imwrite(bw,'greenopenthresfcmgrayb245_72_864_rap00001.jpg');

%To trace perimeter of an object

BWP1=bwperim(bw);

%To fill the perimeter with white colour pixels while the other

%non-boundary objects with black clour pixels

BWF1=imfill(BWP1);

%To display the boundary of the target object which is the abnormality

%region

%imwrite(BWF1,'redimfillopenthresfcmgrayb245_78_864_rap00001.jpg');

imwrite(BWF1,'greenimfillopenthresfcmgrayb245_72_864_rap00001.jpg');

%To calculate the area of the abnormality region

D1=regionprops(BWF1,'area');

imwrite(D1,'greenareaimfillopenthresfcmgrayb245_72_864_rap00001.jpg');

the code last one 'imwrite(D1,'greenareaimfillopenthresfcmgrayb245_72_864_rap00001.jpg');' got error

and the error says like this:-

>> Step3

Error using imwrite (line 442)

Expected DATA to be one of these types:

double, single, uint8, uint16, uint32, uint64, int8, int16, int32, int64, logical

Instead its type was struct.

Error in Step3 (line 41)

imwrite(D1,'greenareaimfillopenthresfcmgrayb245_72_864_rap00001.jpg');

why its show error? and how can I save the image for D1=regionprops(BWF1,'area'); ?

Answer 1

[DGM]

You don't. The output of regionprops() is a struct containing the specified object properties. It doesn't even make conceptual sense to save it as an image. It's not an image in form or concept.

See regionprops().

[Dayangku Nur Faizah Pengiran Mohamad]

Ok noted. But I want to ask more.

How could I segment the boundary of the abnormality after the code

'BWF1=imfill(BWP1);' ?

Because the result I get not the boundary of the region abnormality, but the area of the abnormality.

Is this the correct code for to get the boundary of the region abnormality?

'I99=imread('cropgreencentroidimfillopenthresfcmgrayb245_72_864_rap00001.jpg');

Segout=I99;

Segout(BWP1)=uint8*255;

figure,imshow(Segout),title('boundary');'

[DGM]

I don't know what any of these results are, since I don't have the source images. If you want the object boundaries, you may be able to use one of the following

bwperim

bwboundaries

bwtraceboundary