setting range for pixel intensity
1 Ansicht (letzte 30 Tage)
Ältere Kommentare anzeigen
i am having a gray level image, i want to set range like if x(i,j)=183 to 215 it will have some value
c programming for this would be like
x[i,j]=pixel intensity
for(i=0;i<=n;i++)
{
for(j=0;j<=n;j++)
{
if(x[i,j]=183||x[ij]=215
{green color}
else
{red}
end
}}
how i would show this in matlab
0 Kommentare
Antworten (1)
Guillaume
am 11 Apr. 2019
Bearbeitet: Guillaume
am 11 Apr. 2019
You have to decide if your image is greyscale or colour. You obviously can't set a pixel to green in a greyscale image without first converting it to truecolour. In any case, your if/else would produce a binary image which by default is displayed in black and white.
Anyway, in matlab you wouldn't use a loop for this
%greyimage: your 2d matrix of the image, most likely of type uint8 if you're using intensities 183 and 215
bwimage = ismember(greyimage, [183, 215]);
%bwimage is a logical array the same size as the image with true (1) when the pixel has value 183 or 215 and false (0) otherwise
2 Kommentare
Image Analyst
am 11 Apr. 2019
Then
greyImage(bwimage) = someValue; % Set to whatever you want.
Do it one color channel at a time if you have a color image.
Siehe auch
Kategorien
Mehr zu Modify Image Colors finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!