temperature and gray level
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is there any relation between gray level and thermal image?
5 个评论
KSSV
2019-4-15
What do you mean by a relation?
monika SINGH
2019-4-15
Rik
2019-4-15
In general, yes. The specifics will depend on you thermal camera setup.
monika SINGH
2019-4-16
编辑：monika SINGH
2019-4-16
Rik
2019-4-16
No, but it seems common sense to me. If you have a temperature sensor, the value it returns should increase for increasing temperature. (unless the mapping is reversed, which should be in your camera documentation)
回答（1 个）
KSSV
2019-4-16
I hope this demo code might help you:
N = 100 ;
x = rand(N,1) ;
y = rand(N,1) ;
s = rand(N,1) ; % Say intensity
% Assign colors
the_range=range(s); % find range of data
min_val = min(s); % find maximum value of data
max_val = max(s) ; % find minimum value of data
idx = floor(((s-min_val)/the_range)*63)+1;
p = colormap(gray) ;
col = p(idx,:) ;
subplot(121)
scatter(x,y,30,col,'filled')
colorbar
subplot(122)
scatter(x,y,30,s,'filled')
colorbar
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2019-4-15
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