Please install R and R-Studio before you try Google Vision APIs.

Calling Googlevision APIs using R Language

Click here for the slides I used in the class

Click here for Key IOT Networks comparison

The Nginx demo video

Here is the code I used in R to demonstrate Google Vision APIs. Remember to install R, R studio, and other libraries first.

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# library(rjson) # to get credentials for Google Cloud Console
library(“rjson”)

creds = fromJSON(file=’C:/Downloads/credentials.json’) # Retrieve Credentials file from cloud console
options(“googleAuthR.client_id” = creds$installed$client_id)
options(“googleAuthR.client_secret” = creds$installed$client_secret)
options(“googleAuthR.scopes.selected” = c(“https://www.googleapis.com/auth/cloud-platform”))

googleAuthR::gar_auth_service(json_file=”C:/Downloads/credentials.json”)

imagePath <- “C:/Downloads/Taj.jpg”
gcv_get_image_annotations(
imagePaths = imagePath,
# feature = “FACE_DETECTION”,
feature = “LANDMARK_DETECTION”,
maxNumResults = 7
)

imagePath <- “C:/Downloads/CarsAndDog.jpg”

gcv_get_image_annotations(
imagePaths = imagePath,
# feature = “LABEL_DETECTION”,
maxNumResults = 10
)

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