getScreenPixelRGBValue

Get screen value of specified pixel in image model

Syntax

pixval = getScreenPixelRGBValue(imgmodel,r,c)

Description

pixval = getScreenPixelRGBValue(imgmodel,r,c) returns the screen value of one or more pixels with (row, column) coordinate (r, c) in image imgmodel.

Input Arguments

imgmodel — Image model

scalar imagemodel object

Image model, specified as a scalar imagemodel object.

r — Row coordinate

positive integer | vector of positive integers

Row coordinate of pixel, specified as a positive integer or vector of positive integers.

c — Column coordinate

positive integer | vector of positive integers

Column coordinate of pixel, specified as a positive integer or vector of positive integers.

Output Arguments

pixval — Screen pixel value

numeric scalar | numeric vector | numeric array

Pixel value, returned as one of the following.

Input Type	Return Format
p grayscale pixels	p-by-3 numeric array. Each row specifies a pixel. The columns specify the red, green, and blue components of the pixel value.
p RGB pixels	Numeric row vector of length p*3. The first p elements are the red value for each pixel. The next p elements are the green value for each pixel. The last p elements are the blue value for each pixel.
p binary pixels	p-by-3 numeric array. Each row specifies a pixel. The columns specify the red, green, and blue components of the pixel value.
p indexed pixels	p-by-3 numeric array. Each row specifies a pixel. The columns specify the red, green, and blue components of the pixel value.

Data Types: double

Version History

Introduced before R2006a