How to

Get image width and height

iex> {:ok, data} = OpencvThumbnailServer.Api.load_image_url("http://ww3.sinaimg.cn/mw690/6941baebgw1epzcuv9vmxj20me0hy0u1.jpg")
{:ok, <<255, 216, 255, 224, ...>>}
iex> OpencvThumbnailServer.Api.get_dimension(data)
{:ok, {256, 256}}

Installation

The project is in early development stage, there's no package available in hex. you must install the deps with git repo.

1. Add opencv_thumbnail_server to your list of dependencies in mix.exs:

def deps do
  [{:opencv_thumbnail_server, github: "developerworks/opencv_thumbnail_server"}]
end

2. Ensure opencv_thumbnail_server is started before your application:

def application do
  [applications: [:opencv_thumbnail_server]]
end

OpenCV Installation on Ubuntu

http://www.pyimagesearch.com/2015/06/22/install-opencv-3-0-and-python-2-7-on-ubuntu/

OpenCV Installation on Mac OSX

http://www.mobileway.net/2015/02/14/install-opencv-for-python-on-mac-os-x/