count_colors: Count colors based on proximity to centers

In cwickham/routes: Generate data-based landscapes from driving routes

Description

Colors in colors are binned to the closest colors in centers based on Euclidean distance in the color space provided in colorspace. These are then tabulated to give the number of pixels of each color in centers.

Usage

count_colors(colors, centers, colorspace)

Arguments

colors	colors to be tabulated as a colorspace::color object, e.g. colorspace::RGB.
centers	colors to be used for binning as a colorspace::color object, e.g. colorspace::RGB.
colorspace	string describing the colorspace in which distances should be calculated, e.g. "RGB", "LAB", "LUV".

Value

tibble with as many rows as centers with the columns freq and hex, as well as columns corresponding to the dimensions of colorspace

Examples

example_jpg <- system.file("extdata", "example.JPG", package = "routes")
read_pixels(example_jpg) %>% 
  colorspace::RGB() %>%
  count_colors(centers = colorspace::RGB(c(1, 0, 0), c(0, 1, 0),  c(0, 0, 1)),
    colorspace = "RGB") 

cwickham/routes documentation built on Nov. 4, 2019, 9:34 a.m.