PaddleX/deploy/ultra-infer/ultra_infer/vision/visualize/ocr.cc

// Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
//
// 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.

#include "ultra_infer/vision/visualize/visualize.h"

namespace ultra_infer {
namespace vision {

cv::Mat VisOcr(const cv::Mat &im, const OCRResult &ocr_result,
               const float score_threshold) {
  auto vis_im = im.clone();
  bool have_score = (ocr_result.boxes.size() == ocr_result.rec_scores.size());

  for (int n = 0; n < ocr_result.boxes.size(); n++) {
    if (have_score) {
      if (ocr_result.rec_scores[n] < score_threshold) {
        continue;
      }
    }
    cv::Point rook_points[4];

    for (int m = 0; m < 4; m++) {
      rook_points[m] = cv::Point(int(ocr_result.boxes[n][m * 2]),
                                 int(ocr_result.boxes[n][m * 2 + 1]));
    }

    const cv::Point *ppt[1] = {rook_points};
    int npt[] = {4};
    cv::polylines(vis_im, ppt, npt, 1, 1, CV_RGB(0, 255, 0), 2, 8, 0);
  }

  return vis_im;
}

cv::Mat VisCURVEOcr(const cv::Mat &im, const OCRCURVEResult &ocr_result,
                    const float score_threshold) {
  auto vis_im = im.clone();
  bool have_score = (ocr_result.boxes.size() == ocr_result.rec_scores.size());

  for (int n = 0; n < ocr_result.boxes.size(); n++) {
    if (have_score) {
      if (ocr_result.rec_scores[n] < score_threshold) {
        continue;
      }
    }
    std::vector<cv::Point> rook_points;

    for (int m = 0; m < ocr_result.boxes[n].size() / 2; m++) {
      rook_points.push_back(cv::Point(int(ocr_result.boxes[n][m * 2]),
                                      int(ocr_result.boxes[n][m * 2 + 1])));
    }

    if (!rook_points.empty()) {
      cv::Point *ppt = &rook_points[0];
      int npt = static_cast<int>(rook_points.size());
      cv::polylines(vis_im, &ppt, &npt, 1, 1, CV_RGB(0, 255, 0), 2, 8, 0);
    }
  }

  return vis_im;
}

cv::Mat Visualize::VisOcr(const cv::Mat &im, const OCRResult &ocr_result) {
  FDWARNING
      << "DEPRECATED: ultra_infer::vision::Visualize::VisOcr is deprecated, "
         "please use ultra_infer::vision:VisOcr function instead."
      << std::endl;
  auto vis_im = im.clone();

  for (int n = 0; n < ocr_result.boxes.size(); n++) {
    cv::Point rook_points[4];

    for (int m = 0; m < 4; m++) {
      rook_points[m] = cv::Point(int(ocr_result.boxes[n][m * 2]),
                                 int(ocr_result.boxes[n][m * 2 + 1]));
    }

    const cv::Point *ppt[1] = {rook_points};
    int npt[] = {4};
    cv::polylines(vis_im, ppt, npt, 1, 1, CV_RGB(0, 255, 0), 2, 8, 0);
  }

  return vis_im;
}

cv::Mat Visualize::VisCURVEOcr(const cv::Mat &im,
                               const OCRCURVEResult &ocr_result) {
  FDWARNING
      << "DEPRECATED: ultra_infer::vision::Visualize::VisOcr is deprecated, "
         "please use ultra_infer::vision:VisOcr function instead."
      << std::endl;
  auto vis_im = im.clone();

  for (int n = 0; n < ocr_result.boxes.size(); n++) {
    std::vector<cv::Point> rook_points;
    for (int m = 0; m < ocr_result.boxes[n].size() / 2; m++) {
      rook_points.push_back(cv::Point(int(ocr_result.boxes[n][m * 2]),
                                      int(ocr_result.boxes[n][m * 2 + 1])));
    }
    if (!rook_points.empty()) {
      cv::Point *ppt = &rook_points[0];
      int npt = static_cast<int>(rook_points.size());
      cv::polylines(vis_im, &ppt, &npt, 1, 1, CV_RGB(0, 255, 0), 2, 8, 0);
    }
  }

  return vis_im;
}

} // namespace vision
} // namespace ultra_infer