[alchemy-vision] Add support for text extraction

[germanattanasio]

POST /image/ImageGetRankedImageSceneText Identifies text in the POSTed image
GET /url/UrlGetRankedImageSceneText Identifies text in the URL

The documentation is: http://www.ibm.com/smarterplanet/us/en/ibmwatson/developercloud/alchemyvision/api/v1/#

[mishrasambit]

I tried this extending com.ibm.watson.developer_cloud.service.WatsonService.
and using the following code snippet, but I am getting error response
SEVERE: https://gateway-a.watsonplatform.net/calls/image/ImageGetRankedImageSceneText?outputMode=json&imagePostMode=raw, status: 400, error:

public <T extends AlchemyGenericModel> T imageGetRankedImageSceneText(
            File image, Class<T> returnType) {
        final Map<String, Object> params = new HashMap<String, Object>();
        params.put("imagePostMode", "raw");
        params.put("outputMode", "json");

        final String path = "/image/ImageGetRankedImageSceneText";

        final RequestBuilder requestBuilder = RequestBuilder.post(path);
        requestBuilder.withBody(RequestBody.create(HttpMediaType.BINARY_FILE,image));
        for (final String param : params.keySet()) {
            requestBuilder.withQuery(param, params.get(param));
        }
        return executeRequest(requestBuilder.build(), returnType);
}

[germanattanasio]

You should try to update AlchemyLanguage.java not WatsonService and it should be pretty straitforward.

In any case I'm planning on working on this this week.