Setting Display Range for RGB Colors

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Dan
Dan 2011-12-26
评论： Image Analyst 2021-5-4
Hi,
The function imshow(I,[low high]) allows you to set the display range for a grayscale color based on the parameters low and high. Can the same be done for an RGB color without manually editing the array?
Thanks!

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Image Analyst
Image Analyst 2011-12-26
No, it can't. It happens automatically. Even for 16 (48) bit color images, it automatically scales them to 8(24) bit for display on your 8(24 or 32) bit computer monitor. If you didn't want that or like how that looks you'll have to actually change your array before you display it.
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Felipe Bayona
Felipe Bayona 2021-5-3
Hello Image Analyst
How must be the array changed to allow the [low high] intensity definition in RGB?
Thanks
Image Analyst
Image Analyst 2021-5-4
You would have to scale the image before passing it to imshow(). Use rescale() and then cast it to either uint8 or uint16 or have it be a single or double within the range 0 to 1.

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