OpenImageR (version 1.0)

down_sample_image: downsampling an image ( by a factor ) using gaussian blur

Description

downsampling an image ( by a factor ) using gaussian blur

Usage

down_sample_image(image, factor, gaussian_blur = FALSE, gauss_sigma = 1, range_gauss = 2)

Arguments

image

matrix or 3-dimensional array

factor

a positive number greater or equal to 1.0

gaussian_blur

a boolean (TRUE,FALSE) specifying if gaussian blur should be applied when downsampling

gauss_sigma

float parameter sigma for the gaussian filter

range_gauss

float number specifying the range of values for the gaussian filter

Value

depending on the input, either a matrix or an array

Details

This function downsamples an image with the option to use gaussian blur for optimal output.

Examples

path = system.file("tmp_images", "2.jpg", package = "OpenImageR")

image = readImage(path)

dsamp = down_sample_image(image, factor = 2.0, gaussian_blur = TRUE)