Reads any image format and returns a grayscale matrix of integers (0-255).
Useful for custom image processing before outline extraction.
Usage
img_load(path, color = FALSE, flip = FALSE)
Arguments
- path
Character. Path to image file
- color
Logical. Keep as RGB color? Default FALSE (convert to grayscale)
- flip
Logical. Flip vertically? (Images are top-down, coords bottom-up). Default TRUE
Value
If color=FALSE: Integer matrix (nrow = height, ncol = width) with values 0-255
If color=TRUE: Integer array (nrow = height, ncol = width, 3) with RGB values 0-255
Examples
if (FALSE) { # \dontrun{
# Load as grayscale
img <- img_load("leaf.jpg")
dim(img) # height x width
# Load as color
img_rgb <- img_load("leaf.jpg", color = TRUE)
dim(img_rgb) # height x width x 3
# For most uses, just call from_mask() directly
outline <- from_mask("leaf.jpg")
} # }
