从数据URI获取图像 [英] Getting image from data uri

问题描述

我正在尝试抓取数据，并且数据之一也是图像，该图像已嵌入数据uri中.我想不出要用r做到这一点很热.

I'm trying to scrap data and one of the data is also the image, which is embeded in data uri. I can't figure it out hot to do this with r.

library(rvest)
webUrl<-"https://portaltramites.inpi.gob.ar/Marcas/Logo?Acta=3363531"

imgscr<- read_html(webUrl) %>%
html_node(xpath = '//*/img') %>%
html_attr('src')

img<-gsub("data:image/gif;base64,","",imgsrc, fixed=true)

head(img)

#now I'm stuck

推荐答案

library(rvest)
library(openssl)
library(magick)

pg <- read_html("https://portaltramites.inpi.gob.ar/Marcas/Logo?Acta=3363531")

img <- html_nodes(pg, "img")

img_src <- html_attr(img, "src")
img_src <- gsub("^data.*base64,", "", img_src)

image_read(base64_decode(img_src))

然后，您可以使用其他 magick 软件包功能来保存/操作/等.

You can then use other magick package functions to save/manipulate/etc.

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