Setting Display Range for RGB Colors

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!

Answer 1

[Image Analyst]

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.

[Dan]

Yeah, when a Google search wasn't coming up with anything I figured as much. Thanks for the confirmation.

[Felipe Bayona]

Hello Image Analyst

How must be the array changed to allow the [low high] intensity definition in RGB?

Thanks

[Image Analyst]

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.