mask.create: Create a mask for use within function awsimage

In adimpro: Adaptive Smoothing of Digital Images

Create a mask for use within function awsimage

Description

Select part of image according to greyscale (or color) value.

Usage

mask.create(img,
            range1 = c(0, 1), range2 = c(0, 1), range3 = c(0, 1),
            locate = TRUE)

Arguments

img	Image object of class "adimpro", usually the result returned from read.image, read.raw, or make.image.
range1	Range of gray values or values in the first color channel. mask is set to FALSE for all pixel with values outside this range. Defaults to c(0,1).
range2	Range of values in the second color channel. mask is set to FALSE for all pixel with values outside this range. Defaults to c(0,1).
range3	Range of values in the third color channel. mask is set to FALSE for all pixel with values outside this range. Defaults to c(0,1).
locate	(logical). If TRUE (default), the image is displayed and two opposite corners of a rectangular region can be selected using the mouse (call of locator(2)).

Details

Function to create a mask. The returned object mask can be used to restrict computations in function awsimage to a region characterized by mask==TRUE.

Value

logical matrix of image dimension.

Author(s)

Karsten Tabelow [e-mail] and Joerg Polzehl [e-mail]

References

Polzehl, J., and Tabelow, K. (2007). Adaptive smoothing of digital images, Journal of Statistical Software 19 (1).

See Also

awsimage

adimpro documentation built on Sept. 11, 2024, 6:39 p.m.