temperature and gray level

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monika SINGH
monika SINGH 2019-4-15
回答： KSSV 2019-4-16
is there any relation between gray level and thermal image?
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monika SINGH
monika SINGH 2019-4-16
编辑：monika SINGH 2019-4-16
do you have any document proving this fact?
Rik
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)

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KSSV
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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