51 lines
2.2 KiB
C
51 lines
2.2 KiB
C
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// Copyright 2020 The MediaPipe Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef MEDIAPIPE_MODULES_OBJECTRON_CALCULATORS_BOX_UTIL_H_
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#define MEDIAPIPE_MODULES_OBJECTRON_CALCULATORS_BOX_UTIL_H_
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#include "mediapipe/framework/port/opencv_core_inc.h"
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#include "mediapipe/util/tracking/box_tracker.pb.h"
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namespace mediapipe {
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// This function fills the geometry of the TimedBoxProto. Id, timestamp etc.
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// need to be set outside this function.
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void ComputeBoundingRect(const std::vector<cv::Point2f>& points,
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mediapipe::TimedBoxProto* box);
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// This function computes the intersection over union between two boxes.
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float ComputeBoxIoU(const TimedBoxProto& box1, const TimedBoxProto& box2);
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// Computes corners of the box.
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// width and height are image width and height, which is typically
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// needed since the box is in normalized coordinates.
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std::vector<cv::Point2f> ComputeBoxCorners(const TimedBoxProto& box,
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float width, float height);
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// Computes the perspective transform from box1 to box2.
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// The input argument aspect_ratio is width / height of the image.
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// The returned matrix should be a 3x3 matrix.
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cv::Mat PerspectiveTransformBetweenBoxes(const TimedBoxProto& src_box,
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const TimedBoxProto& dst_box,
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const float aspect_ratio);
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// Map point according to source and destination box location.
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cv::Point2f MapPoint(const TimedBoxProto& src_box, const TimedBoxProto& dst_box,
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const cv::Point2f& src_point, float width, float height);
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} // namespace mediapipe
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#endif // MEDIAPIPE_MODULES_OBJECTRON_CALCULATORS_BOX_UTIL_H_
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