// -*- C++ -*-

// Copyright 2006-2008 Deutsches Forschungszentrum fuer Kuenstliche Intelligenz 
// or its licensors, as applicable.
// 
// You may not use this file except under the terms of the accompanying license.
// 
// Licensed under the Apache License, Version 2.0 (the "License"); you
// may not use this file except in compliance with the License. You may
// obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// 
// Project: OCRopus
// File: ocr-deskew-rast.h
// Purpose: perform skew correction using RAST
// Responsible: Faisal Shafait (faisal.shafait@dfki.de)
// Reviewer: 
// Primary Repository: 
// Web Sites: www.iupr.org, www.dfki.de

#ifndef h_ocr_deskew_rast_
#define h_ocr_deskew_rast_

#include "colib.h"
#include "imgio.h"
#include "imglib.h"
#include "ocr-utils.h"

namespace ocropus {

    // Get skew angle of the page using RAST
    double estimate_skew_by_rast(colib::bytearray &in);

    struct DeskewPageByRAST : colib::ICleanupBinary, colib::ICleanupGray {
        ~DeskewPageByRAST() {
        }
        
        const char *description() {
            return "Deskew page image by RAST\n";
        }
        
        void init(const char **argv) {
            // nothing to be done
        }
        
        double getSkewAngle(colib::bytearray &in);
        double getSkewAngle(colib::rectarray &bboxes);
        void cleanup(colib::bytearray &image, colib::bytearray &in);
    };
   
    colib::ICleanupBinary *make_DeskewPageByRAST();
    colib::ICleanupGray *make_DeskewGrayPageByRAST();
    
}
#endif