Can I scrape Image properties?

[motho 0]

Hi Folks

 

Is it possible in ubot to scrape image properties? 

 

I need to get Height and Width of approx 7000 images and then filter them down to anything less than 500 x 500 pixels

 

In firebug or chrome I can easily see the image size but I can't seem to get the uBot browser to find the image properties.

 

An example image here http://www.selby.com.au/media/catalog/product/u/h/uhf088.jpg

[Bot-Factory 602]

Hi.

 

That's not possible out of the box. But there are command line tools available who are able to deliver the pixel information's.

http://www.imagemagick.org/

 

There is a commandline tool called "identify.exe"

 

So you can download the image, run a short shell script to get the pixel informations. 

 

Here is a short example:

set(#url, "http://www.selby.com.au/media/catalog/product/u/h/uhf088.jpg", "Global")
create folder("{$special folder("Application")}\\tmp", "")
plugin command("HTTP post.dll", "http file download", #url, "{$special folder("Application")}\\tmp\\{$plugin function("File Management.dll", "$file name", #url)}", "")
set(#result, $plugin function("Advanced Shell.dll", "$shell batch hidden", "\"C:\\Program Files\\ImageMagick-6.8.8-Q16\\identify.exe\" \"{$special folder("Application")}\\tmp\\{$plugin function("File Management.dll", "$file name", #url)}\""), "Global")
set(#result2, $find regular expression(#result, "[0-9]+x[0-9]+\\s"), "Global")

 

 

I'm using a couple of plugins in my example, but you can do that with build in commands as well. 

 

Maybe that gives you some ideas.

 

Cheers

Dan

[k1lv9h 76]

Hi,

 

Javascript code to get image width and height:

set(#imgurl, "http://www.selby.com.au/media/catalog/product/u/h/uhf088.jpg", "Global")
loop(2) {
    set(#imginfo, $eval("
var imgHeight
  var imgWidth

  function findHHandWW() \{
    imgHeight = this.height;imgWidth = this.width;return true
  \}

  function showImage(imgPath) \{
    var myImage = new Image()
    myImage.name = imgPath
    myImage.onload = findHHandWW
    myImage.src = imgPath
  \}

  showImage('{#imgurl}')
  imgWidth+\"x\"+imgHeight"), "Global")
}

sample-image-properties-002.ubot

 

Kevin

[Bot-Factory 602]

Cool. That's a lot better.

 

In the posted code there is something missing (what you have in the ubot file):

navigate(#imgurl, "Wait")

 

 

Complete Code:

set(#imgurl, "http://www.selby.com.au/media/catalog/product/u/h/uhf088.jpg", "Global")
navigate(#imgurl, "Wait")
loop(2) {
set(#imginfo, $eval("
var imgHeight
var imgWidth

function findHHandWW() \{
imgHeight = this.height;imgWidth = this.width;return true
\}

function showImage(imgPath) \{
var myImage = new Image()
myImage.name = imgPath
myImage.onload = findHHandWW
myImage.src = imgPath
\}

showImage('{#imgurl}')
imgWidth+\"x\"+imgHeight"), "Global")
}

 

[k1lv9h 76]

Hi,

 

@dan Where is the loop for a count of 0 that the navigate command is in.

 

No matter updated .ubot file to match code.

 

Kevin