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POGoogle docs OCR implementation iphone
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  1. POGoogle docs OCR implementation iphone
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    copied!<p>I am trying to integrate google docs OCR feature in my iPhone app. Below is what google docs documentation says.</p> <p>To perform OCR on a .pdf, .jpg, .png, or .gif file, include the ocr=true parameter when uploading a file:</p> <pre><code>POST /feeds/default/private/full?ocr=true GData-Version: 3.0 Authorization: &lt;your authorization header here&gt; Content-Length: 1984 Content-Type: image/png Slug: OCRd Doc ... png contents here ... </code></pre> <p>Now, I am using the following code to make that HTTP post request.</p> <pre><code> responseData = [[NSMutableData data] retain]; NSURL *url = [NSURL URLWithString:@"http://docs.google.com/feeds/default/private/full?ocr=true"]; UIImage *img = [UIImage imageNamed:@"Submit-top.png"]; NSData *data = UIImagePNGRepresentation(img); int a = [data length]; NSString *imgLength = [NSString stringWithFormat:@"%d" ,a]; NSMutableURLRequest *request = [[NSMutableURLRequest alloc]initWithURL:url]; [request setHTTPBody:data]; [request setHTTPMethod:@"POST"]; [request addValue:@"3.0" forHTTPHeaderField:@"GData-Version:"]; [request addValue:auth.accessToken forHTTPHeaderField:@"Authorization:"]; [request addValue:imgLength forHTTPHeaderField:@"Content-Length:"]; [request addValue:@"image/png" forHTTPHeaderField:@"Content-Type:"]; [request addValue:@"OCRd Doc" forHTTPHeaderField:@"Slug:"]; [[NSURLConnection alloc] initWithRequest:request delegate:self]; NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil]; NSString *str = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding]; NSLog(@"%@", str); </code></pre> <p>but I get a response with status code 400.</p>
 

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