How to get high & low pixel intensity value from a image?

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voxey
voxey 2019-7-19
评论： Image Analyst 2019-7-19
How to get high & low pixel intensity value from a image ? Can any one share ideas ?

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KALYAN ACHARJYA
KALYAN ACHARJYA 2019-7-19
编辑：KALYAN ACHARJYA 2019-7-19
Considering gray Image, say image_gray
high_pixel=max(image_gray(:));
low_pixel=min(image_gray(:));
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KALYAN ACHARJYA
KALYAN ACHARJYA 2019-7-19
编辑：KALYAN ACHARJYA 2019-7-19
May be both intensities are present in your image.
To ensure, please check with other images (Which dont have larger pixels, like dark image)
See I have test with black image-
high_pixel =
uint8
22
low_pixel =
uint8
8
Let me know!
Image Analyst
Image Analyst 2019-7-19
What's your definition of "extract"? Do you just want a list of N elements, all having the same values? Seems useless? Do you want a binary image mapping out where those values occur in the image?

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