How can I create polar axis without numeric labels?

Helo!

I wont to create circle axis and some text label in image. I use polar function to create axis. But there are numeric label, which I do not wont here. So I use function findall to find out text and remove it by function delete. But I need to create my own text in image. When I use function text, it does not work. No error, but there in no inserted text in image.

What do I do wrong?

Thanks for you answer!

My code:

image = imread('img.jpg');
% display image
figure(1)
imagesc(image);
h2=axes('position',[1 1 1 1]);  % setcenter of polar
hold on;

% create polar
polar(1, 1, '-r');
% transparency Settings
ph=findall(h2,'type','patch');  
set(ph,'Facecolor','none');
% remove numeric label
T = findall(gcf, 'type', 'text'); % find all text
delete(T); % delete text

% create new text in image
T = text(50,50,'text');
set(T,'Visible','on');

fig=gcf;