face_emotion: Detects face emotion

In IndicoDataSolutions/IndicoIo-R: A simple R Wrapper for the indico set of APIs - http://indico.io

Description

Given a grayscale input image of a face, returns a probability distribution over emotional state. Input should be a two-dimensional structure (like data.frame or matrix), resizing will be attempted internally but for best performance, images should be already sized at 48x48 pixels.

Usage

face_emotion(img, version = NULL, ...)

Arguments

img	image data
version	for api version
...	additional arguments to passed to request
api_key	your personal indico API key
cloud	subdomain for indico private cloud

Value

List with face emotions probability pairs

See Also

facial_features, image_features

Examples

## Example 1
img <- "../tests/testthat/image/image.png"
emotion <- face_emotion(img)

most.possible <- sort(unlist(emotion), decreasing = TRUE)[1:2]
cat(sprintf("Detected '%s' emotion with probability %0.4f.\n",
            names(most.possible)[1], most.possible[1]))
cat(sprintf("Next possible is '%s' emotion with probability %0.4f.",
            names(most.possible)[2], most.possible[2]))

IndicoDataSolutions/IndicoIo-R documentation built on May 7, 2019, 6:37 a.m.