Azzera filtri
Azzera filtri

extracting pixel values from image

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Hello,
I have to get the value of pure black pixel in images which hva colorbar
i have converted the range of pixels using function of thresholding and divided the image accorging.
how can i get value of highest and min value(how pure the black color is?)
like waht is the highrst value of pixels ie highest value of black color in each image?

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Jose Jeremias Caballero
Jose Jeremias Caballero il 29 Gen 2020
Modificato: Jose Jeremias Caballero il 29 Gen 2020
a=imread('binary2.jpg');
imshow(a);
minimum=min(min(a)),
[row,column]=find(a==minimum);
hold on,
plot(column,row,'*'),
hold off,
minimum =
uint8
88
  2 Commenti
Smruti Khobragade
Smruti Khobragade il 29 Gen 2020
sir i want mininum in the range 0-1 as shown in colorbar
like first pic will have pure black value as 0.8 secind image which vakue low black color will have output according to colorbar as 0.2 something
Smruti Khobragade
Smruti Khobragade il 29 Gen 2020
it worked .
Thankyou

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